Patents Filed

• White Light Emitting Zinc based OLED
  
  Inventors: Y. N. Mohapatra, S. P. Singh, S. S. Manoharan, and Q. Mohammad
  Patent No.: 1776/DEL/2004

Electroluminescence spectra of unannealed and annealed PPV films (1) CN-PPP films and PPV embedded by Y2O3 (2) PPV structures with the polymer film confined between two metal layers(3)

PL spectra with different percentage of PVK

Printed Gold elctrodes and a PVPh dielectric layer on that so as to make a fully inkjet printed device.

Publications

1. Sunil Kumar, Upkar K. Verma and Y.N. Mohapatra
   Negative contribution to the reverse bias capacitance of organic diodes due to field dependent mobility: determination of barrier height and transport parameters
   Journal of Applied Physics,124, 035501 (2018)


2. Sk Md Obaidulla, Subhash Singh, Y.N. Mohapatra and P. K. Giri
   Ambient condition bias stress stability of vanadium (IV) oxide phthalocyanine based p-channel organic field-effect transistors
   Journal of Physics D: Applied Physics, 51, 015110 (2018)


3. Subhash Singh and Y.N. Mohapatra
   Bias stress effect in solution-processed organic thin-film transistors: Evidence of field-induced emission from interfacial ions
   Organic Electronics, 51, 128-136 (2017)


4. Upkar K. Verma, Sunil Kumar and Y.N. Mohapatra
   Comparison between conventional and inverted solar cells using open circuit voltage decay transients
   Journal of Applied Physics, 122, 8, 085503 (2017)


5. Sunil Kumar, Durgesh C. Tripathi and Y.N. Mohapatra
   Organic high-low homojunction diode: Distinct mechanisms underlying forward and reverse bias operation
   Organic Electronics, 50, 331-338 (2017)


6. Upkar K. Verma, Sunil Kumar and Y.N. Mohapatra
   Measurement of contact surface photo-voltage from forward bias C-V characteristics of P3HT:PCBM based BHJ solar cells
   Solar Energy Materials and Solar Cells, 172, 25 (2017)


7. Subhash Singh and Y.N. Mohapatra
   Origin of switching drain current transients in TIPS-Pentacene based organic thin-film transistor with polymer dielectric: Role of interfacial ions
   Applied Physics Letters, 110, 11,233301(2017)


8. Upkar K. Verma, Durgesh C. Tripathi and Y.N. Mohapatra
   Direct determination of defect density of states in organic bulk heterojunction solar cells
   Applied Physics Letters,116, 11,113301 (2016)


9. Subhash Singh and Y.N. Mohapatra
   Persistent photocurrent (PPC) in solution-processed organic thin film transistors: Mechanisms of gate voltage control
   Journal of Applied Physics, 120, 045501, (2016)


10. Subhash Singh and Y.N. Mohapatra
    Trap Kinetics in Solution-Processed Organic Thin-Film Transistors
    IEEE Electron Device Letters, 37, 1, 35-38 (2016)


11. B. B. Patil, S. S. Mishra and Y.N. Mohapatra
    Patent Trends in Printed Electronics and Printed Tags
    International Journal of Computer Science and Electronics Engineering, 4, 1, 21-24 (2015)


12. V. Pandian, Y.N. Mohapatra and V. Kumar
    A Review of Photoelectric Properties of EL2 in Semi-Insulating Gallium Arsenide
    IETE Journal of Research, 38, 2-3, 70-74 (2015)


13. Subhash Singh and Y.N. Mohapatra
    Dielectric optimization for inkjet-printed TIPS-pentacene organic thin-film transistors
    Emerging Electronics (ICEE), IEEE 2nd International Conference (2015)


14. Mihir Sarkar and Y.N. Mohapatra
    Electron beam lithography in thick negative tone chemically amplified resist: Controlling sidewall profile in deep trenches and channels
    Microelectronic Engineering,(2014)


15. Durgesh C. Tripathi and Y.N. Mohapatra
    Charge transport across organic heterostructure: Role of interfacial density of states
    Journal of Applied Physics, 116, 064509 (2014)


16. K. Sudheendra Rao, Durgesh C. Tripathi and Y.N. Mohapatra
    Carrier capture kinetics at electrical defects in poly [2-methoxy-5-(2′-ethyl-hexyloxy)-1, 4-phenylenevinylene](MEH-PPV) studied using charge transient spectroscopy
    Journal of Applied Physics, 116, 054511 (2014)


17. K. Sudheendra Rao and Y.N. Mohapatra
    Open circuit voltage decay transients and recombination in bulk-heterojunction solar cells
    Appl. Phys. Lett. 104,203303 (2014)


18. Mihir Sarkar and Y.N. Mohapatra
    Self-aligned electron beam lithography of metallic layer sandwiched in a polymer multilayer: Facilitation of vertical organic transistor fabrication
    Microelectronic Engineering,115,16-20 (2014)


19. Durgesh C. Tripathi, Dhirendra K. Sinha, and Y.N. Mohapatra
    Diffusivity and mobility of non-equilibrium carriers in organic semiconductors: Existence of critical field determining temperature dependence
    Journal of Applied Physics, 114,154508 (2013)


20. K S Rao and Y.N. Mohapatra
    Disentangling degradation and auto-recovery of luminescence in Alq3 based organic light emitting diodes
    Journal of Luminescence Vol. 145,793–796 (2013)


21. Durgesh C. Tripathi and Y.N. Mohapatra
    Diffusive capacitance in space charge limited organic diodes: Analysis of peak in capacitance-voltage characteristics
    Appl. Phys. Lett. 102, 253303 (2013)


22. Mihir Sarkar, Neeraj Shukla and Y.N. Mohapatra
    Transmission and charge state distribution of carbon ions emerging from nitrogen gas target in a tandem accelerator: Impact of stripper gas pressure
    Physical Review Special Topics-Accelerators and Beams, 15(10),100101 (2012)


23. Durgesh C. Tripathi and Y.N. Mohapatra
    Ideal organic homojunction diode obtained using controlled alignment of localized density of states across doped/undoped interface
    Organic Electronics: physics, materials, applications 13 (9) , pp. 1680-1685 (2012)


24. Dhirendra K. Sinha and Y.N. Mohapatra
    Charge trapping and electroluminescence at quantum dots embedded in a polymer matrix
    Organic Electronics: physics, materials, applications 13 (8) , pp. 1456-1462 (2012)


25. Ashish Gupta, Soumen Mandal, Monika Katiyar, and Y.N. Mohapatra
    Film processing characteristics of nano gold suitable for conductive application on flexible substrates
    Thin Solid Films 520 (17) , pp. 5664-5670 (2012)


26. Mihir Sarkar, Neeraj Shukla, Nobin Banerji, and Y.N. Mohapatra
    Proton beam writing on PMMA and SU-8 films as a tool for development of micro-structures for Organic Electronics
    Appl. Surf. Sc. 258 (9) , pp. 4195-4198 (2012)


27. Awnish K. Tripathi, and Y.N. Mohapatra
    Correlation of photocurrent and electroabsorption spectra and their temperature dependence for conjugated light emitting polymers: The origin of the corresponding density of states
    Physical Review B 84, 205213 (2011)


28. Awnish K. Tripathi, Durgesh C. Tripathi,and Y.N. Mohapatra
    Simultaneous and direct measurement of carrier diffusion constant and mobility in organic semiconductors and deviation from standard Einstein relation
    Physical Review B 84, 041201 (RAPID COMMUNICATIONS) (2011)


29. Ashish Gupta,Saumen Mandal,Monica Katiyar,and Y.N. Mohapatra
    Low Temperature Solution Process forFabrication of Electrodes on FlexibleSubstrate Using Gold Nanoparticles
    International Journal of Nanoscience Vol. 10, No. 4 (2011)


30. Durgesh C. Tripathi, Awnish K. Tripathi, and Y.N. Mohapatra
    Mobility determination using frequency dependence of imaginary part of impedance (Im Z) for organic and polymeric thin films
    Appl. Phys. Lett. 98, 033304 (2011)


31. S. K. Sahoo, D. Misra, M. Sahoo, C. A. MacDonald, H. Bakhru, D. C. Agrawal, Y. N. Mohapatra, S. B. Majumder, and R. S. Katiyar
    Improved dielectric properties and their temperature insensitivity in multilayered Ba0.8Sr0.2TiO3/ZrO2 thin films
    Journal of Applied Physics 109, 064108 (2011)


32. Santosh K. Sahoo, D. Misra, D. C. Agrawal, and Y.N. Mohapatra
    ZrO2 Layer Thickness Dependent Electrical and Dielectric Properties of BST/ZrO2/BST Multilayer Thin Films
    Mater. Res. Soc. Symp. Proc. Vol. 1368, 2011 Materials Research Society


33. S. K. Sahoo, D. Misra, D. C. Agrawal, Y. N. Mohapatra, S. B. Majumder, and R. S. Katiyar
    Leakage mechanism of Ba0.8Sr0.2TiO3 /ZrO2 multilayer thin films
    Journal of Applied Physics 108, 074112 (2010)


34. Awnish Kumar Tripathi, Ashish Gupta, Y.N. Mohapatra *
    Mobility with negative coefficient in Poole-Frenkel field dependence in conjugated polymers: Role of injected hot electrons
    Organic Electronics, Volume 11, Issue 11, November 2010, Pages 1753-1758


35. Devendra P. Singh, Y.N. Mohapatra, D.C. Agrawal
    Comparative Analysis of unity gain frequency of top and bottom-contact Organic thin film transistors
    Materials Science and Engineering: B, Volume 157, Issues 1-3, 15 February 2009, Pages 58-65


36. Devendra P. Singh, Y.N. Mohapatra, D.C. Agrawal
    Dielectric and leakage current properties of sol-gel derived calcium copper titanate (CCTO) thin films and CCTO/ZrO2 multilayers
    Materials Science and Engineering: B, Volume 157, Issues 1-3, 15 February 2009, Pages 58-65


37. Dheeraj K. Mohata, Durgesh C. Tripathi and Y. N. Mohapatra
    Comparison of Simulation & Experimental Capacitance Based Characterizaton of Organic Semiconductor Diode Structures
    Materials Research Society, December, 2008


38. Dhirendra K. Sinha Awnish K. Tripathi and Y. N. Mohapatra
    Temperature dependence of electroluminescence to isolate the role of CdSe/ZnS Quantum Dots in PFO based polymer light emitting diodes
    Materials Research Society, December, 2008


39. Vibha Tripathi, M. N. Islam, Y. N. Mohapatra and P. Roca i Cabarrocas
    Raman spectroscopy of nano-structured silicon to study the embedded crystallites
    Eur. Phys. J. Appl. Phys. 39, 203-209 (2007)


40. Anand K. Biswas, Ashish, A. K. Tripathi, Y. N. Mohapatra and A. Ajayaghosh
    Synthesis, Photophysical and Electroluminescent Properties of Arylenevinylenes-co pryrrolenevinylenes Derived from Divinylaryl Bridged Bispyrroles
    Macromolecules, 40, 2657-2665 (2007)


41. Vibha Tripathi, Y. N. Mohapatra and P. Roca i Cabarrocas
    Electrical Manifestation of nanocrystallites embedded in nanostructured hydrogenated Silicon
    Journal of Applied Physics 2007


42. A.K. Tripathi, R. Verma, A.K. Biswas, Ashish, Y. N. Mohapatra
    Electroluminescence transient of polymer light emitting diodes: field dependence of overshoot and time delay
    Proc. Of International Workshop on Physics of Semiconductor Devices, 2007, pp 698-601


43. A. Dixit, D. C. Agrawal, Y. N. Mohapatra, S. B. Majumder, R.S. Katiyar
    Studies on the dielectric and relaxor behavior of sol-gel derived barium strontium zirconate titanate thin films
    Materials Letters, Volume 61, Issue 17, July 2007, Pages 3685-3688


44. Vibha Tripathi, Y.N. Mohapatra *, P. Roca i Cabarrocas
    Trapping phenomena in intrinsic hydrogenated amorphous silicon like materials studied using current transient spectroscopies
    Journal of Non-Crystalline Solids vol. 350, 19-20 (2006) 1130-1133


45. Samarendra P. Singh, Y.N. Mohapatra , M. Qureshi, S. Sundar Manoharan
    Time domain spectroscopic study of PL decay in zinc benzothiazole suitable for white light emitting OLEDs
    Synthetic Metals, Volume 155, Issue 2, 15 November 2005, Pages 376-379


46. G.S.Samal, A.K.Biswas, Y.N.Mohapatra
    Electroabsorption spectroscopic study of an electron transport material-CN-PPV
    Synthetic Metals 155 (2005) 303-305


47. G.S.Samal, A.K.Biswas, A.K.Tripathi, Swapnil Singh,Y.N.Mohapatra
    Photoluminescence quantum efficiency (PLQ) and PL decay dynamics study on polymeric light emitting materials
    Synthetic Metals 155 (2005) 344-348


48. A. K. Biswas, Awnish Tripathi, Swapnil Singh, Y. N. Mohapatra
    Effect of condensed phase environment on luminescent properties of MEH-PPV thin films
    Synthetic Metals 155 (2005) 340-343


49. Y.N.Mohapatra, V. Varshney, V. Rao, S. P. Singh, G. S. Samal
    Electrical transient based defect spectroscopy in polymeric and organic semiconductors
    Mater. Res. Soc. Symp. Proc. Vol. 864, 2005 Materials Research Society E5.1.1


50. Vibha Tripathi, Y N Mohapatra, P. Roca i Cabarrocas
    PECVD grown polymorphous hydrogenated silicon (pm-Si:H) studied using current transient spectroscopies in PIN Diodes
    Mater. Res. Soc. Symp. Proc. Vol. 862, 2005 Materials Research Society A18.2


51. Samarendra P Singh, Y. N. Mohapatra, M. Qureshi, S. Sundar Manoharan
    White OLED based on spectral broadening in electroluminescence due to formation of interfacial exciplexes
    Applied Physics Letter 86, 113505 (2005)


52. D. Ghosh, G. S. Samal, A. K. Biswas Y. N. Mohapatra
    Laser Induced degradation Studied of PP and CN-PPV Thin Films using Photoluminescence
    Thin Solid Films 477 (2005) 162-168


53. M. Qureshi, S. Sundar Manoharan , Samarendra P Singh, Y. N. Mohapatra
    Photogenerated time of flight mobility measurements in novel electron transport material: 2,5-dibenzothiazollyl thiophene
    Phy. Stat. sol. (a) 201, R60-R63 (2004)


54. M. Qureshi, S. Sundar Manoharan , Samarendra P Singh, Y. N. Mohapatra
    Electroluminescent properties of dimeric bis(2-(2i-hydroxy1phenyl) benzthiazolate) zinc (II) complex
    Solid State communications 133 (2005) 305-309


55. S. K. Sahoo, D. C. Agrawal, Y. N. Mohapatra, S. B. Majumder Ram S. Katiyar
    Changes in the Leakage currents in BST/ZrO2 multilayers due to modulations in oxygen concentration
    Appl. Phys. Lett., Vol ,85, No. 21 (2004)


56. Sandesh Gupta, D.C.Agarwal Y.N.Mohapatra
    Photoluminescence of phosphors prepared by low temperature hydrothermal route
    Journal of the Electrochemical Society, Vol. 151 (11), pp H239-H242, 2004


57. V. Ramesh, Y. N. Mohapatra, D. C. Agarwal
    Depolarization Characteristics of Sol-Gel Pb1.05 (Zr0.53Ti0.47)O3 Thin Film
    Ferroelectrics: 306:71-77 (2004)


58. S. K. Sahoo, D. C. Agrawal, S. B. Majumder, R. S. Katiyar, Y. N. Mohapatra
    Low Temperature Dielectric Properties of BST/ZrO2 Multilayer Films
    Proceedings of Materials Research Society, 784, C3.7.1 (2004)


59. V. Tripathi , Y. N. Mohapatra P. Roca i Cabarrocas
    Switch-On Transients And Static Characteristics Of Polymorphous And Amorphous Silicon Thin-Film Transistor
    Mat. Res. Soc. Symp. Proc. Vol. 762, A18.7.1 (2003)


60. V. Tripathi, M. N. Islam, Y. N. Mohapatra, V. Suendo, P. Roca i Cabarrocas
    Size Distribution Of Embedded Nano-Crystallites In Polymorphous Silicon Studied By Raman Spectroscopy And Photoluminescence
    Mat. Res. Soc. Symp. Proc. Vol. 762, A19.7.1 (2003)


61. Girija Sankar Samal, A. K. Biswas Y. N. Mohapatra
    Spectroscopic Photovoltage Characterization of PPV thin film suitable for PLED applications
    Mat. Res. Soc. Symp. Proc. Vol. 771, L7.4.1 (2003)


62. Sanjay Rangan, Mark Horn, S. Ashok Y. N. Mohapatra
    Influence of hydrogen plasma treatment on boron implanted junctions in silicon
    J. Vac. Sci. Technol. B 21, p781 (2003)


63. S.B. Majumder , D.C. Agrawal , Y.N. Mohapatra, R.S. Katiyar
    Effect of cerium doping on the micro-structure and electrical properties of sol-gel derived Pb1.05(Zr0.53_dCedTi0.47)O3 (d5/10 at.%) thin films
    Materials Science and Engineering B98, 1 (2003)


64. Samarendra P Singh, Vineet Rao, Y.N. Mohapatra, Sanjay Rangan, S. Ashok
    Electrical signature of ion-implantation induced defects in n-Si in the defect cluster regime studied using DLTS and isothermal transient spectroscopies Defect and Impurity Engineered Semiconductors and Devices
    Materials Research Society Vol. 719, p F11.1 (2002)


65. Y.N. Mohapatra
    Semiconductor Defect Characterization Deep Level Transient Spectroscopy Techniques, One Day Tutorial conducted at MRS 2002 (San Francisco) under the Symposium on Defect and Impurity Engineered Semiconductors and Devices
    Notes distributed by Materials Research Society (Waarandale, PA) 2002


66. V. Tripathi, M. N. Islam, S. Gupta and Y. N. Mohapatra
    Raman Spectroscopy of Polymorphous silicon to study embedded nanocrystallites
    Proc. Of Sixth Intl. Conf. Optoelectronics, Fibre Optics, and Photonics, OMD-33, Mumbai (2002)


67. Samarendra P. Singh, Y.N. Mohapatra, Sanjay Rangan and S. Ashok
    Carrier Dynaics at deeap traps in ion implanted silicon: Possible Signature of Defect Clusters
    Physics of Semiconductor Devices ,ed. V. Kumar and P.K. Basu, Allied , p 1025 (2002)


68. S.B. Majumder, D.C. Agarwal, Y.N. Mohapatra and R.S. Katiyar
    Microstructure Evolution and Electrical Characteristics of Ce doped PZT thin films
    Proc. Annual Meeting of American Ceramic Society, St. Luis (2002)


69. A. Singh, Y.N. Mohapatra and Satyendra Kumar
    Electromagnetic induction and damping: Qualitative experiments using PC interface
    Am. J. Phys. 70 (2002) 424


70. P.K. Giri and Y.N. Mohapatra
    Evidence of Metastability with athermal ionization from defect clusters in ion-damamged silicon
    Phys. Rev. B62, pp16561-16565 ( 2000)


71. P.K. Giri and Y.N. Mohapatra
    Capacitance Transient Spectroscopy Models of coupled trapping kinetics among multiple defect states : application to multiple defects due to heavy ion damage in silicon
    Phys. Rev. B62, pp2496-2504 ( 2000)


72. P.K. Giri and Y.N. Mohapatra
    Thermal Stability of Defect Complexes due to high dose MeV implantation in silicon
    Mat. Sc. Engg. B 71, p.327, 2000


73. S.B. Majumder, B. Roy, D.C. Agrawal and Y.N. Mohapatra
    Fatigue and dielectric properties of undoped and Ce doped PZT thin films
    Integrated Ferroelectrics, 225, A63-A74 , (2000)


74. S.B. Majumder, B. Roy, D.C. Agrawal and Y.N. Mohapatra
    Phase Transformations in So-Gel Prepared PZT and PLT Thin Films upon Isothermal Treatmentsat Different Temperatures
    Ferroelectrics, 225, pp. 271-278 , 1999


75. P.K.Giri and Y.N.Mohapatra
    Electrical Characterization of MeV Heavy Ion Induced Damage in silicon : Evidence of defect migration and clustering
    J. Appl. Phys. 84, pp 1901-1911 (1998)


76. P.K.Giri, Sankar Dhar, V.N.Kulkarni, and Y.N.Mohapatra
    Charge redistribution among defects in heavily damaged silicon
    Phys. Rev. B 57, pp14603-14607 (1998)


77. P.K Giri and Y.N. Mohapatra
    Compensating defects in deep buried layers produced by MeV heavy ions in n- silicon
    Appl. Phys. Lett. 71, pp 1682-1684 (1997)


78. P.K. Giri, S.Dhar, V.N. Kulkarni and Y.N. Mohapatra
    Electrically active defects in as-implanted deep buried layers in p-type silicon
    J. Appl. Phys. 81, pp 260-263 (1997)


79. S.B. Majumder, Y.N. Mohapatra and D.C. Agarwal
    Fatigue Resistance in Lead Ziconate Titanate thin ferroelectric films : Effect of Cerium doping and frequency dependence
    Appl. Phys. Lett. 70, pp 138-140 (1997)


80. S.B. Majumder, Y.N. Mohapatra and D.C. Agarwal
    Optical and Microstructural Characterization of sol-gel derived Ce-doped PZT thin films
    Journal of Materials Science 32, pp 2141-2150 (1997)


81. P.K. Giri, S. Dhar, V.N. Kulkarni and Y.N. Mohapatra
    Characterization of deep level defects in Si irradiated with MeV Ar ions using constant capacitance time analyzed transient spectroscopy
    Bulletin of Mater. Science 20, pp417-421, (1997)


82. S.B. Majumder, Y.N. Mohapatra and D.C. Agarwal
    Optical and Microstructural Characterization of sol-gel derived Cerium doped PZT thin films
    J. Mater. Science, 32, pp2141-2150 (1997)


83. S.Dhar, T.Som, Y.N. Mohapatra and V.N. Kulkarni
    Ar ion induced copper germanide phase formation at room temperature
    Bulletin of Mat. Sc., 20, p423-427 (1997)


84. P.K. Giri, S.Dhar, V.N. Kulkarni and Y.N. Mohapatra
    Electrically active defects due to end-of-ion range damage in silicon irradiated with MeV Ar+ ion
    Nucl. Inst. Meth. B, 111, pp 285-289 (1996)


85. S.Dhar, Y.N.Mohapatra and V.N. Kulkarni
    Compound formation under local thermal spikes during ion-bem mixing : Model and its experimental verification
    Phys. Rev. B 54, pp 5769-5476 (1996)


86. Sandeep Agarwal, Y.N.Mohapatra, Vijay A.Singh and R.Sharan
    Time analyzed transient spectrscopy and multiple DX related emission centres in silicon doped AlxGa1-xAs
    J. Appl. Phys. 77, pp 5725-5729 (1995)


87. Sandeep Agarwal, Y.N.Mohapatra, Vijay A.Singh
    Temperature - time duality and deep level spectroscopies
    J. Appl. Phys. 77, pp 3155-3161 (1995)


88. P.K.Giri and Y.N.Mohapatra
    Nonexponentiality in photoinduced current transients in undoped semi - insulating gallium arsenide
    J. Appl. Phys. 77, pp 262-268 (1995)


89. S.Dhar, T.Som, Y.N.Mohapatra and V.N. Kulkarni
    Room temperature synthesis of copper germanide phase by ion beam mixing
    Appl. Phys. Lett. 67, pp1700-1703 (1995)


90. Sandeep Agarwal and Y.N.Mohapatra
    The Kinetics of capture and emission of discrete DX related centres in silicon doped AlGaAs using time analyzed transient spectroscopy
    Materials Science Forum, vol. 378 , pp 941-946 (1995)


91. S.B.Majumdar, D.C.Agarwal, Y.N.Mohapatra and V.N.Kulkarni
    Perovskite Phase Formation in sol-gel derived lead ziconate titanate thin films
    Integrated Ferroelectrics 9, pp 271-284 (1995)


92. S.B.Majumdar, V.N. Kulkarni, Y.N.Mohapatra and D.C. Agarwal
    Interfacial Mechanisms controlling phase formation in sol-gel derived lead zirconate titanate thin films
    Bull. Mat. Sci. 17, pp. 1005 - 1014 (1995)


93. D.C.Agarwal,S.B.Majumdar,Y.N.Mohapatra, R. Sataiah,H. D. Bist, R. S. Katiyar
    Micro-Raman studies of sol-gel derived lead zirconate titanate thin films
    Raman Spectroscopy 24, pp 459-462 (1993)


94. V.Pandian, Y.N.Mohapatra and V. Kumar
    Photoelectric properties of EL2 in semi-insulating GaAs
    IETE 38, 70-76 (1992)


95. V.Pandian, Y.N.Mohapatra and V. Kumar
    Gold and silver related deep level defects in GaAs
    J. Appl. Phys. 30, pp 2815-2820 (1991)


96. Y.N.Mohapatra and V. Kumar
    Trapping characteristics of DX centres in MBE grown GaAlAs
    J. Appl. Phys. 68, pp 3431-3434 (1990)


97. Y.N.Mohapatra and V. Kumar
    Characterization of defects in gallium arsenide
    Bull. Mater. Sci 13, pp 83-88 (1990)


98. Y.N.Mohapatra and V. Kumar
    Temperature dependence of photocurrent in undoped semi-insulating gallium arsenide
    Phys. stat. solidi (a) 114, pp 659-663 (1989)


99. Y.N.Mohapatra and V. Kumar
    Determination of activation energy for thermal regeneration of EL2 metastable state by thermally stimulated photocurrent measurements
    J. Appl. Phys. 64, pp 956-958 (1988)


100. S.Subramaniam, B.M.Arora, Y.N.Mohapatra and V. Kumar
     Trapping characteristics of dual states of the DX centre in MBE grown si doped GaAlAs in 'Defects in Semiconductors
     eds. H.J. von Berdeleben, Materials Science Forum, vol. 10 - 12 , pp 405-411 (1986)


101. Y.N.Mohapatra N. Balasubramaniam and V. Kumar
     Characterization of deep levels in semi-insulating gallium arsenide
     Bull. Mater. Sci. 7, pp 57-61 (1985)

Conference Proceedings (Selected)

1. Sunil Kumar, Upkar K. Verma, Y. N. Mohapatra
   Determination of defect density of states in organic diodes using capacitance-voltage measurements
   International Conference on Advanced Nanomaterials and Nanotechnology, ICANN-2017


2. Santosh K. Sahoo, H. Bakhru, Sumit Kumar, D. Misra, Colin A. Wolden, Y. N. Mohapatra
   and D. C. Agrawal, Field Dependent Carrier Transport Mechanisms in Metal-Insulator–Metal Devices with Ba0.8Sr0.2TiO3/ ZrO2 Heterostructured Thin Films as the Dielectric,
   MRS Proceedings / Volume 1547 / 2013


3. Anshul Sharma, Ashish Gupta, Y. N. Mohapatra
   Synthesis of silver nanoparticles for printable electronics
   International Conference on Nano Science and Technology (ICONSAT) Mumbai, February 17-20, 2010


4. Ashish Gupta, Saumen Mandal, Monika Katiyar, Y. N. Mohapatra
   Low temperature solution process for fabrication of electrodes on flexible substrate using gold nanoparticles
   International Conference on Nano Science and Technology (ICONSAT) Mumbai, February 17-20, 2010 (Best Poster Award)


5. Lalat I. Giri, Durgesh C. Tripathi, and Y. N. Mohapatra
   Field and Thickness Dependence of Mobility of Organic Semiconductors determined using Photocurrent Transients
   Proceedings of the 15th International Workshop on the Physics of Semiconductor Devices, New Delhi, Dec., 2009.


6. Ashish Gupta, Anand K Biswas, Awnish K Tripathi and Yashowanta N Mohapatra
   Side Chain Influence On The Optical Properties of Conjugated Arylenevinylenes-Co-Pyrrolenevinylenes(AVPV)
   Presented in the XV International Workshop on the Physics of Semiconductor Devices, New Delhi, 15th -19th Dec. 2009


7. Ashish Gupta, Saumen Mandal, Priyanka, Monica Katiyar, Y. N. Mohapatra
   Nano gold ink for printing micro structure on flexible substrate
   DAE-BRNS 2nd Internation Symposium on Materials Chemistry, Dec. 2-6, 2008.


8. D.C. Tripathi, D.K.Sinha, C.K.Suman and Y. N. Mohapatra
   Electrical Characterization of Solution Processed MEHPPV/CNPPV Hetrostructure
   9th Asian Symposium on Information Display, New Delhi, 2006, pp 219


9. Samarendra P. Singh. Mohammad Qureshi, S. S Manoharan and Y. N. Mohapatra
   DLTS studies on Organic/Inorganic heterostructure devices
   Proceedings of the 12th International Workshop on Physics of Semiconductor Devices 2003, Ed. K. N. Bhatt & A. DasGupta. Vol. 2, pp-1219-1221 Narosa Publishing House New Delhi


10. G.S.Samal, Subhadip Mitra, Rahul Dubey, and Y. N. Mohapatra
    Internal Electric Field and Contact Potential in Polymer Light Emitting diode structure studied by Electroabsorption Spectroscopy
    Proceedings of the 12th International Workshop on Physics of Semiconductor Devices 2003, IIT Chennai, India.


11. G. S. Samal, A. K. Biswas, Y. N. Mohapatra
    Temperature Dependence of Photoluminescence Spectra of PPV and CN-PPV Thin Films
    Presentation on 2nd International conference on materials for advanced technologies & IUMRS-International conference in Asia 2003 December 7-12, Singapore


12. G.S.Samal, A.K.Biswas and Y. N. Mohapatra
    Spectroscopic Photovoltage Characterization of PPV Thin Films Suitable for PLED Applications
    MRS Proceeding Symposium Spring 2003


13. Y. N. Mohapatra and P. K. Giri
    Sensitivity of electrically active defect spectra to processing conditions in MeV heavy ion implanted silicon
    Proceedings of MRS Spring Meeting 99 : Front End Processing in silicon ed. H-J Gossmann (1999)


14. Y. N. Mohapatra and P. K. Giri
    Charge redistribution and defect relaxation in heavily damaged silicon studied using time analyzed transient spectroscopy
    Defect and Impurity Engineered Semiconductors and Devices II : ed. S.Ashok, JCChevallier, K. Sumino, B.L. Sopori and W. Gotz, MRS 98 Spring Meeting (San Francisco) Symposium Proceedings vol 510, pp349-354 (1998)


15. Y. N. Mohapatra and P. K. Giri
    Evidence of defect migration and clustering in MeV heavy ion damaged silicon
    Defect and Impurity Engineered Semiconductors and Devices II : ed. S.Ashok, JCChevallier, K. Sumino, B.L. Sopori and W. Gotz, MRS 98 Spring Meeting (San Francisco) Symposium Proceedings vol 510, pp403-409 (1998).


16. T.Som, Sankar Dhar, Y.N. Mohapatra and V.N. Kulkarni
    Study of Plsma Ion Implanted Hydrogen in Semi-insulating GaAs
    Physics of Semiconductor Devices ,ed. Vikram Kumar, S.K. Agarwal, vol II, pp369-372, (Narosa, New Delhi) 1997


17. P. K. Giri, S. Dhar, V.N. Kulkarni and Y. N. Mohapatra
    Trapping characteristics of MeV ion implanted buried layers in silicon
    DAE Solid State Symposium, Mumbai, India , Dec 27-31, 1996


18. P. K. Giri, S. Dhar, V.N. Kulkarni and Y. N. Mohapatra
    Electrically active defects due to end-of-ion range damage in silicon irradiated with MeV Ar+ ion
    National Conference on Recent Advances in in Semiconductors, New Delhi, India June 20-22 1995
    Semiconductor Materials and Devices, eds. O.P. Agnihotri and V. K. Jain (Narosa, New Delhi) 1997, pp 140-146


19. P. K. Giri and Y.N. Mohapatra
    Time Analyzed Transient Spectroscopy Analysis of Photo-induced Current Transients in Undoped Semi-insulating Gallium Arsenide
    National Conference on Recent Advances in in Semiconductors, New Delhi, India June 20-22 1995
    Semiconductor Materials and Devices, eds. O. P. Agnihotri and V. K. Jain (Narosa, New Delhi) 1997, pp 156-160


20. P. K. Giri, S. Dhar, V. N. Kulkarni and Y. N. Mohapatra
    Characterization of deep level defects in Si irradiated with MeV Ar+ ions using constant capacitance time analyzed transient spectroscopy
    International Conference on Defects in Condensed Media, Kalpakkam, India, September 20-22, 1995


21. S. Dhar, T. Som, Y.N. Mohapatra and V. N. Kulkarni
    Ar ion induced copper germanide phase formation at room temprature
    International Conference on Defects in Condensed Media, Kalpakkam, India, September 20-22, 1995


22. S.B. Majumdar, D.C. Agarwal, Y. N. Mohapatra and V. N. Kulkarni
    Mechanisms controlling phase formation in PZT thin films by sol-gel technique
    Proc. Ninth IEEE International Symposium on Applications of Ferroelectrics (ISAF-94), eds. R.K. Pandey, M.Liu and A.Safari, August 1994, Pennsylvania USA


23. S.B. Majumdar, D.C. Agarwal, Y. N. Mohapatra and V. N. Kulkarni
    Preparation and Characterization of PZT thin films by sol-gel technique
    National Seminar on Ferroelectric Device and Laser Materials, Nagpur University, Nagput (India) 1994


24. B. Bhattacharya, S, Dhar, K. Ramakrishnan, V.N. Kulkarni and Y. N. Mohapatra
    Synthesis of copper germanide films by ion beam mixing
    Solid State Physics (India), 37C, 458 (1994)


25. S. Agarwal, P.K. Giri, R. Sharan and Y. N. Mohapatra
    Evidence of field dependent emission from DX centres
    Proc. of 7th International Workshop on Physics of Semiconductor Devices, ed. K.Lal (Narosa, New Delhi) 1993


26. M.N. Islam, Y. N. Mohapatra, S. C. Agarwal and S. Kumar
    Electron transport mechanism in amorphous silicon Schottky barrier devices
    Proc. 7th International Workshop on Physics of Semiconductor Devices, ed. K.Lal (Narosa New Delhi) 1993, p405


27. Y. N. Mohapatra and V. Kumar
    Kinetics of capture and emission of multiple states of DX centres
    Proc. of 3rd International Workshop on Physics of Semiconductor Devices, ed. Radhakrishnan (Madras) 1987

Tutorials Conducted in International Conferences

1. Tutorial (Full day) 0n "Semiconductor Heterostructures", San Francisco, MRS 2008


2. Tutorial (Half-day) on "Organic Semiconductors" at TIFR, Mumbai, organized by International Workshop on Physics of Semiconductor Devices, IWPSD 2007.


3. Tutorial (Half-day) on "Organic Light Emitting Displays" at India Habitat Centre,New Delhi, organized by ASID 06, October (2006)


4. Tutorial (Full day) 0n "Deep Level Transient Spectroscopy (DLTS)", San Francisco, MRS2003

Invited Lectures in Meetings and Conferences (Selected)

1. Mobility, Diffusivity and Relaxation in Organic Semiconductors: Measurements that Challenge Models
   Invited Lecture delivered at Institute of Materials Research, Singapore in Symposium on Organic & Polymer Electronics: IMRE, December 9-10, 2010 Singapore


2. Lecture on Transport and Injection of Carriers in organic Semicondcutors in SCDT Orgaqnic Electronics Course
   Indian Institute of Technology, Kanpur July 05, 2010


3. Lecture on Transport and Injection of Carriers in organic Semicondcutors in SCDT Orgaqnic Electronics Course
   Indian Institute of Technology, Kanpur July 2009


4. Embedded Nanostructures in Semiconductors for Photovoltaic Applications
   IOP and KIIT Presentation 25 January, 2009


5. Electrical Characterization of Semiconductors and Deep Level Transient Spectroscopy (DLTS) Characterization
   SSPL New Delhi 15 January, 2009



6. Invited Lecture on Embedded Nanoscale Heterostructures for Photoelectronic Applications Polymers for Optoelectronic Applications

   Delivered at Jamia-Millia Islamia, National Nanotechnology Seminar, January 30 (2008)



7. Delivered Medal Lecture on Organic Semiconductors as Electronic Materials: Impact of Defects and Disorder induced DOS

   MRSI Medal Lecture , Annual General Meeting of Indian Materials Society Trivandrum, February 18(2008)


8. ICPR Periodical Lecture in "Practical and Theoretical Rationality"
   This lecture, entitled "Scientific Rationality" was delivered by Professor Y N Mohapatra, Department of Physics, Indian Institute of Technology, Kanpur, on Friday, 14 March, 2008.



9. Lecture in SCDT Orgaqnic Electronics Course
   Indian Institute of Technology, Kanpur July 2008


10. Molecular Semiconductors : Strategies to understand & Optimize Materials for Devices
    Fourth JNC Conference on Chemistry of : Materials September 27, 2008 Alleppy


11. Polymeric Semiconductors :Displays & Electronic Applications
    Photonics India Review Oct 16, 2008 IISc Bangalore


12. Embedded Nanostructures in Organic Semiconductors
    NPL New Delhi 24th December, 2008


13. Organic Semiconductors for Displays and Photonic applications
    Photonics ,BITS Pilani


14. Engineers Day Theme Lecture on Convergence of Technologies for Rapid Development
    

    Professor Y. N. Mohapatra delivered the talk on this topic during the celebrations organized by the Kanpur Chapter of the Institution of Engineers at IIT Kanpur on September 15, 2007



15. Delivered an Invited Lecture on Nanotechnology : A tour of some recent developments
    L.N.M. I.I.T, Jaipur, on December 31 (2007)


16. Transport in Organic Semiconductors: A Primer on Practice and Problems
    Short Course on Organic Electronics, SCDT, IIT Kanpur June25-July 20 (2007)


17. Transport in Organic Semiconductors: A Primer on Practice and Problems
    Short Course on Organic Electronics, SCDT, IIT Kanpur June25-July 20 (2007)


18. Half Day Tutorial on Organic Semiconductors at TIFR, Mumbai
    International Workshop on Physics of Semiconductor Devices, (IWPSD) 2007.


19. Liquid Crystal Displays: An Introduction
    Short course on Audio and Video Processing, Coding and Displays held at IIT Kanpur, Nov 26-Dec.06, 2007



20. Invited Lecture on Evolution of Photo- and electro-luminescence Spectra in Blends of red emitting AVPV Oligomer and PVK

    A. K. Biswas, Awnish Tripathi, A. Ajayaghosh and Y. N. Mohapatra
    

    Invited Oral Presentation in 10th International Conference on Advanced Materials, 9-13 October, IURS-ICAM, Bangalore, 2007



21. The Exciting Frontiers of Physics: A tour of some random spots
    National Workshop on Innovative Physics Experiments, IIT Kanpur, June 11, (2007)


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