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Oki Gunawan, Ph.D. - Publications

Affiliations: 
2007 Princeton University, Princeton, NJ 
Area:
physics of semiconductors
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76 high-probability publications. We are testing a new system for linking publications to authors. You can help! If you notice any inaccuracies, please sign in and mark papers as correct or incorrect matches. If you identify any major omissions or other inaccuracies in the publication list, please let us know.

Year Citation  Score
2019 Gunawan O, Pae SR, Bishop DM, Virgus Y, Noh JH, Jeon NJ, Lee YS, Shao X, Todorov T, Mitzi DB, Shin B. Carrier-resolved photo-Hall effect. Nature. PMID 31590177 DOI: 10.1038/S41586-019-1632-2  0.415
2019 Lie S, Leow SW, Bishop D, Guc M, Izquierdo-Roca V, Gunawan O, Wong LH. Improving carrier transport properties of CZTS by Mg incorporation with spray pyrolysis. Acs Applied Materials & Interfaces. PMID 31251557 DOI: 10.1021/Acsami.9B05244  0.361
2018 Lie S, Rui Tan JM, Li W, Leow SW, Tay YF, Bishop DM, Gunawan O, Wong LH. Reducing the interfacial defect density of CZTSSe solar cells by Mn substitution Journal of Materials Chemistry A. 6: 1540-1550. DOI: 10.1039/C7Ta09668B  0.375
2018 Lie S, Sandi MI, Tay YF, Li W, Tan JMR, Bishop DM, Gunawan O, Wong LH. Improving the charge separation and collection at the buffer/absorber interface by double-layered Mn-substituted CZTS Solar Energy Materials and Solar Cells. 185: 351-358. DOI: 10.1016/J.Solmat.2018.05.052  0.39
2017 Todorov TK, Singh S, Bishop DM, Gunawan O, Lee YS, Gershon TS, Brew KW, Antunez PD, Haight R. Ultrathin high band gap solar cells with improved efficiencies from the world's oldest photovoltaic material. Nature Communications. 8: 682. PMID 28947765 DOI: 10.1038/S41467-017-00582-9  0.413
2017 Shin D, Zhu T, Huang X, Gunawan O, Blum V, Mitzi DB. Earth-Abundant Chalcogenide Photovoltaic Devices with over 5% Efficiency Based on a Cu2 BaSn(S,Se)4 Absorber. Advanced Materials (Deerfield Beach, Fla.). PMID 28425630 DOI: 10.1002/Adma.201606945  0.402
2017 Haight R, Gershon T, Gunawan O, Antunez P, Bishop D, Lee YS, Gokmen T, Sardashti K, Chagarov E, Kummel A. Industrial perspectives on earth abundant, multinary thin film photovoltaics Semiconductor Science and Technology. 32: 033004. DOI: 10.1088/1361-6641/Aa5C18  0.594
2017 Gershon T, Gunawan O, Gokmen T, Brew KW, Singh S, Hopstaken M, Poindexter JR, Barnard ES, Buonassisi T, Haight R. Analysis of loss mechanisms in Ag2ZnSnSe4 Schottky barrier photovoltaics Journal of Applied Physics. 121: 174501. DOI: 10.1063/1.4982906  0.643
2017 Jeong G, Kim J, Gunawan O, Pae SR, Kim SH, Song JY, Lee YS, Shin B. Preparation of single-phase SnSe thin-films and modification of electrical properties via stoichiometry control for photovoltaic application Journal of Alloys and Compounds. 722: 474-481. DOI: 10.1016/J.Jallcom.2017.06.094  0.308
2017 Gershon T, Bishop D, Antunez P, Singh S, Brew KW, Lee YS, Gunawan O, Gokmen T, Todorov T, Haight R. Unconventional kesterites: The quest to reduce band tailing in CZTSSe Current Opinion in Green and Sustainable Chemistry. 4: 29-36. DOI: 10.1016/J.Cogsc.2017.01.003  0.636
2017 Gershon T, Sardashti K, Lee YS, Gunawan O, Singh S, Bishop D, Kummel AC, Haight R. Compositional effects in Ag2ZnSnSe4 thin films and photovoltaic devices Acta Materialia. 126: 383-388. DOI: 10.1016/J.Actamat.2017.01.003  0.362
2017 Antunez PD, Bishop DM, Lee YS, Gokmen T, Gunawan O, Gershon TS, Todorov TK, Singh S, Haight R. Back Contact Engineering for Increased Performance in Kesterite Solar Cells Advanced Energy Materials. 7: 1602585. DOI: 10.1002/Aenm.201602585  0.684
2016 Guchhait A, Su Z, Tay YF, Shukla S, Li W, Leow SW, Tan JMR, Lie S, Gunawan O, Wong LH. Enhancement of Open-Circuit Voltage of Solution-Processed Cu2ZnSnS4 Solar Cells with 7.2% Efficiency by Incorporation of Silver Acs Energy Letters. 1: 1256-1261. DOI: 10.1021/Acsenergylett.6B00509  0.34
2016 Kim D, Kim GY, Ko C, Pae SR, Lee YS, Gunawan O, Ogletree DF, Jo W, Shin B. Effects of Postsynthesis Thermal Conditions on Methylammonium Lead Halide Perovskite: Band Bending at Grain Boundaries and Its Impacts on Solar Cell Performance Journal of Physical Chemistry C. 120: 21330-21335. DOI: 10.1021/Acs.Jpcc.6B08744  0.403
2016 Saparov B, Sun JP, Meng W, Xiao Z, Duan HS, Gunawan O, Shin D, Hill IG, Yan Y, Mitzi DB. Thin-Film Deposition and Characterization of a Sn-Deficient Perovskite Derivative Cs2SnI6 Chemistry of Materials. 28: 2315-2322. DOI: 10.1021/Acs.Chemmater.6B00433  0.401
2016 Prabhakar RR, Zhenghua S, Xin Z, Baikie T, Woei LS, Shukla S, Batabyal SK, Gunawan O, Wong LH. Photovoltaic effect in earth abundant solution processed Cu2MnSnS4 and Cu2MnSn(S,Se)4 thin films Solar Energy Materials and Solar Cells. 157: 867-873. DOI: 10.1016/J.Solmat.2016.07.006  0.399
2016 Ramanujam J, Verma A, González-Díaz B, Guerrero-Lemus R, Del Cañizo C, García-Tabarés E, Rey-Stolle I, Granek F, Korte L, Tucci M, Rath J, Singh UP, Todorov T, Gunawan O, Rubio S, et al. Inorganic photovoltaics - Planar and nanostructured devices Progress in Materials Science. 82: 294-404. DOI: 10.1016/J.Pmatsci.2016.03.005  0.342
2016 Gershon T, Sardashti K, Gunawan O, Mankad R, Singh S, Lee YS, Ott JA, Kummel A, Haight R. Photovoltaic Device with over 5% Efficiency Based on an n-Type Ag2 ZnSnSe4 Absorber Advanced Energy Materials. 6: 1601182. DOI: 10.1002/Aenm.201601182  0.372
2016 Gershon T, Lee YS, Antunez P, Mankad R, Singh S, Bishop D, Gunawan O, Hopstaken M, Haight R. Photovoltaic Materials and Devices Based on the Alloyed Kesterite Absorber (AgxCu1- x)2ZnSnSe4 Advanced Energy Materials. DOI: 10.1002/Aenm.201502468  0.35
2016 Tai KF, Gunawan O, Kuwahara M, Chen S, Mhaisalkar SG, Huan CHA, Mitzi DB. Fill Factor Losses in Cu2ZnSn(SxSe1-x)4 Solar Cells: Insights from Physical and Electrical Characterization of Devices and Exfoliated Films Advanced Energy Materials. 6. DOI: 10.1002/Aenm.201501609  0.4
2015 Gunawan O, Gokmen T, Mitzi DB. High intensity and integrated Suns-Voc characterization of high performance kesterite solar cells 2015 Ieee 42nd Photovoltaic Specialist Conference, Pvsc 2015. DOI: 10.1109/PVSC.2015.7355690  0.616
2015 Tai KF, Gershon T, Gunawan O, Huan CHA. Examination of electronic structure differences between CIGSSe and CZTSSe by photoluminescence study Journal of Applied Physics. 117. DOI: 10.1063/1.4922493  0.405
2015 Gershon BT, Lee YS, Mankad R, Gunawan O, Gokmen T, Bishop D, McCandless B, Guha S. The impact of sodium on the sub-bandgap states in CZTSe and CZTS Applied Physics Letters. 106. DOI: 10.1063/1.4916635  0.648
2015 Gunawan O, Virgus Y, Tai KF. A parallel dipole line system Applied Physics Letters. 106. DOI: 10.1063/1.4907931  0.337
2015 Todorov T, Gershon T, Gunawan O, Lee YS, Sturdevant C, Chang LY, Guha S. Monolithic Perovskite-CIGS Tandem Solar Cells via In Situ Band Gap Engineering Advanced Energy Materials. DOI: 10.1002/Aenm.201500799  0.355
2015 Gunawan O, Gokmen T, Mitzi DB. Device Characteristics of Hydrazine-Processed CZTSSe Copper Zinc Tin Sulfide-Based Thin-Film Solar Cells. 387-411. DOI: 10.1002/9781118437865.ch17  0.658
2014 Kim J, Hiroi H, Todorov TK, Gunawan O, Kuwahara M, Gokmen T, Nair D, Hopstaken M, Shin B, Lee YS, Wang W, Sugimoto H, Mitzi DB. High efficiency Cu2ZnSn(S,Se)4 solar cells by applying a double In2S3/CdS emitter. Advanced Materials (Deerfield Beach, Fla.). 26: 7427-31. PMID 25155874 DOI: 10.1002/Adma.201402373  0.64
2014 Gershon T, Gokmen T, Gunawan O, Haight R, Guha S, Shin B. Understanding the relationship between Cu2ZnSn(S,Se)4 material properties and device performance Mrs Communications. 4: 159-170. DOI: 10.1557/Mrc.2014.34  0.644
2014 Todorov T, Sugimoto H, Gunawan O, Gokmen T, Mitzi DB. High-efficiency devices with pure solution-processed Cu2 ZnSn(S,Se)4 Absorbers Ieee Journal of Photovoltaics. 4: 483-485. DOI: 10.1109/Jphotov.2013.2287754  0.654
2014 Todorov T, Gershon T, Gunawan O, Sturdevant C, Guha S. Perovskite-kesterite monolithic tandem solar cells with high open-circuit voltage Applied Physics Letters. 105. DOI: 10.1063/1.4899275  0.354
2014 Gunawan O, Gokmen T, Mitzi DB. Suns- VOC characteristics of high performance kesterite solar cells Journal of Applied Physics. 116. DOI: 10.1063/1.4893315  0.661
2014 Gokmen T, Gunawan O, Mitzi DB. Semi-empirical device model for Cu2ZnSn(S,Se)4 solar cells Applied Physics Letters. 105. DOI: 10.1063/1.4890844  0.676
2014 Winkler MT, Wang W, Gunawan O, Hovel HJ, Todorov TK, Mitzi DB. Optical designs that improve the efficiency of Cu2ZnSn(S,Se) 4 solar cells Energy and Environmental Science. 7: 1029-1036. DOI: 10.1039/C3Ee42541J  0.349
2014 Guo L, Zhu Y, Gunawan O, Gokmen T, Deline VR, Ahmed S, Romankiw LT, Deligianni H. Electrodeposited Cu2ZnSnSe4 thin film solar cell with 7% power conversion efficiency Progress in Photovoltaics: Research and Applications. 22: 58-68. DOI: 10.1002/Pip.2332  0.663
2014 Lee YS, Gershon T, Gunawan O, Todorov TK, Gokmen T, Virgus Y, Guha S. Cu2ZnSnSe4 thin-film solar cells by thermal co-evaporation with 11.6% efficiency and improved minority carrier diffusion length Advanced Energy Materials. 5. DOI: 10.1002/Aenm.201401372  0.623
2014 Wang W, Winkler MT, Gunawan O, Gokmen T, Todorov TK, Zhu Y, Mitzi DB. Device characteristics of CZTSSe thin-film solar cells with 12.6% efficiency Advanced Energy Materials. 4. DOI: 10.1002/Aenm.201301465  0.641
2014 Kim J, Hiroi H, Todorov TK, Gunawan O, Kuwahara M, Gokmen T, Nair D, Hopstaken M, Shin B, Lee YS, Wang W, Sugimoto H, Mitzi DB. Solar Cells: High Efficiency Cu2ZnSn(S,Se)4Solar Cells by Applying a Double In2S3/CdS Emitter (Adv. Mater. 44/2014) Advanced Materials. 26: 7426-7426. DOI: 10.1002/Adma.201470303  0.625
2013 Mitzi DB, Gunawan O, Todorov TK, Barkhouse DA. Prospects and performance limitations for Cu-Zn-Sn-S-Se photovoltaic technology. Philosophical Transactions. Series a, Mathematical, Physical, and Engineering Sciences. 371: 20110432. PMID 23816909 DOI: 10.1098/Rsta.2011.0432  0.366
2013 Gokmen T, Gunawan O, Mitzi DB. Minority carrier diffusion length extraction in Cu2ZnSn(Se,S) 4 solar cells Journal of Applied Physics. 114. DOI: 10.1063/1.4821841  0.664
2013 Gokmen T, Gunawan O, Todorov TK, Mitzi DB. Band tailing and efficiency limitation in kesterite solar cells Applied Physics Letters. 103. DOI: 10.1063/1.4820250  0.698
2013 Todorov TK, Gunawan O, Gokmen T, Mitzi DB. Solution-processed Cu(In,Ga)(S,Se)2 absorber yielding a 15.2% efficient solar cell Progress in Photovoltaics: Research and Applications. 21: 82-87. DOI: 10.1002/Pip.1253  0.659
2013 Shin B, Gunawan O, Zhu Y, Bojarczuk NA, Chey SJ, Guha S. Thin film solar cell with 8.4% power conversion efficiency using an earth-abundant Cu2ZnSnS4 absorber Progress in Photovoltaics: Research and Applications. 21: 72-76. DOI: 10.1002/Pip.1174  0.364
2013 Todorov TK, Tang J, Bag S, Gunawan O, Gokmen T, Zhu Y, Mitzi DB. Beyond 11% effi ciency: Characteristics of state-of-the-art Cu 2ZnSn(S,Se)4Solar Cells Advanced Energy Materials. 3: 34-38. DOI: 10.1002/Aenm.201200348  0.617
2012 Gunawan O, Gokmen T, Shin BS, Guha S. Device characteristics of high performance Cu2ZnSnS4 solar cell Conference Record of the Ieee Photovoltaic Specialists Conference. 3001-3003. DOI: 10.1109/PVSC.2012.6318215  0.628
2012 Miller DW, Warren CW, Gunawan O, Gokmen T, Mitzi DB, Cohen JD. Electronically active defects in the Cu 2ZnSn(Se,S) 4 alloys as revealed by transient photocapacitance spectroscopy Applied Physics Letters. 101. DOI: 10.1063/1.4754834  0.671
2012 Gunawan O, Gokmen T, Warren CW, Cohen JD, Todorov TK, Barkhouse DAR, Bag S, Tang J, Shin B, Mitzi DB. Electronic properties of the Cu 2ZnSn(Se,S) 4 absorber layer in solar cells as revealed by admittance spectroscopy and related methods Applied Physics Letters. 100. DOI: 10.1063/1.4729751  0.669
2012 Bag S, Gunawan O, Gokmen T, Zhu Y, Todorov TK, Mitzi DB. Low band gap liquid-processed CZTSe solar cell with 10.1% efficiency Energy and Environmental Science. 5: 7060-7065. DOI: 10.1039/C2Ee00056C  0.677
2012 Bag S, Gunawan O, Gokmen T, Zhu Y, Mitzi DB. Hydrazine-processed Ge-substituted CZTSe solar cells Chemistry of Materials. 24: 4588-4593. DOI: 10.1021/Cm302881G  0.658
2012 Barkhouse DAR, Gunawan O, Gokmen T, Todorov TK, Mitzi DB. Device characteristics of a 10.1% hydrazine-processed Cu 2ZnSn(Se,S) 4 solar cell Progress in Photovoltaics: Research and Applications. 20: 6-11. DOI: 10.1002/Pip.1160  0.675
2012 Ahmed S, Reuter KB, Gunawan O, Guo L, Romankiw LT, Deligianni H. A high efficiency electrodeposited Cu 2ZnSnS 4 solar cell Advanced Energy Materials. 2: 253-259. DOI: 10.1002/Aenm.201100526  0.344
2011 Lai D, Tan YH, Gunawan O, He L, Seng Tan C. Dopant profile control of epitaxial emitter for silicon solar cells by low temperature epitaxy Applied Physics Letters. 99. DOI: 10.1063/1.3607303  0.328
2011 Haight R, Barkhouse A, Gunawan O, Shin B, Copel M, Hopstaken M, Mitzi DB. Band alignment at the Cu2 ZnSn (SxSe1-x) 4 /CdS interface Applied Physics Letters. 98. DOI: 10.1063/1.3600776  0.351
2011 Todorov T, Gunawan O, Chey SJ, De Monsabert TG, Prabhakar A, Mitzi DB. Progress towards marketable earth-abundant chalcogenide solar cells Thin Solid Films. 519: 7378-7381. DOI: 10.1016/J.Tsf.2010.12.225  0.361
2011 Mitzi DB, Gunawan O, Todorov TK, Wang K, Guha S. The path towards a high-performance solution-processed kesterite solar cell Solar Energy Materials and Solar Cells. 95: 1421-1436. DOI: 10.1016/J.Solmat.2010.11.028  0.373
2011 Gunawan O, Wang K, Fallahazad B, Zhang Y, Tutuc E, Guha S. High performance wire-array silicon solar cells Progress in Photovoltaics: Research and Applications. 19: 307-312. DOI: 10.1002/Pip.1027  0.598
2011 Cao Q, Gunawan O, Copel M, Reuter KB, Chey SJ, Deline VR, Mitzi DB. Defects in Cu(In,Ga)Se 2 chalcopyrite semiconductors: A comparative study of material properties, defect states, and photovoltaic performance Advanced Energy Materials. 1: 845-853. DOI: 10.1002/Aenm.201100344  0.358
2010 Wang KA, Gunawan O, Moumen N, Tulevski G, Mohamed H, Fallahazad B, Tutuc E, Guha S. Wire textured, multi-crystalline Si solar cells created using self-assembled masks. Optics Express. 18: A568-74. PMID 21165090 DOI: 10.1364/Oe.18.00A568  0.573
2010 Gunawan O, Todorov TK, Mitzi DB. Loss mechanisms in hydrazine-processed Cu2 ZnSn (Se,S) 4 solar cells Applied Physics Letters. 97. DOI: 10.1063/1.3522884  0.369
2010 Wang K, Gunawan O, Todorov T, Shin B, Chey SJ, Bojarczuk NA, Mitzi D, Guha S. Thermally evaporated Cu2 ZnSnS4 solar cells Applied Physics Letters. 97. DOI: 10.1063/1.3499284  0.382
2010 Liu W, Mitzi DB, Yuan M, Kellock AJ, Jay Chey S, Gunawan O. 12% Efficiency CuIn(Se,S)2 photovoltaic device prepared using a hydrazine solution process Chemistry of Materials. 22: 1010-1014. DOI: 10.1021/Cm901950Q  0.321
2010 Yuan M, Mitzi DB, Gunawan O, Kellock AJ, Chey SJ, Deline VR. Antimony assisted low-temperature processing of CuIn1 - XGa xSe2 - ySy solar cells Thin Solid Films. 519: 852-856. DOI: 10.1016/J.Tsf.2010.08.135  0.337
2009 Sekaric L, Gunawan O, Majumdar A, Liu XH, Weinstein D, Sleight JW. Size-dependent modulation of carrier mobility in top-down fabricated silicon nanowires Applied Physics Letters. 95. DOI: 10.1063/1.3177331  0.348
2009 Gunawan O, Guha S. Characteristics of vapor-liquid-solid grown silicon nanowire solar cells Solar Energy Materials and Solar Cells. 93: 1388-1393. DOI: 10.1016/J.Solmat.2009.02.024  0.333
2008 Gunawan O, Sekaric L, Majumdar A, Rooks M, Appenzeller J, Sleight JW, Guha S, Haensch W. Measurement of carrier mobility in silicon nanowires. Nano Letters. 8: 1566-71. PMID 18444687 DOI: 10.1021/Nl072646W  0.341
2008 Gunawan O, Gokmen T, Shkolnikov YP, De Poortere EP, Shayegan M. Anomalous giant piezoresistance in AlAs 2D electron systems with antidot lattices. Physical Review Letters. 100: 036602. PMID 18233015 DOI: 10.1103/Physrevlett.100.036602  0.798
2008 Gokmen T, Padmanabhan M, Gunawan O, Shkolnikov YP, Vakili K, De Poortere EP, Shayegan M. Parallel magnetic-field tuning of valley splitting in AlAs two-dimensional electrons Physical Review B - Condensed Matter and Materials Physics. 78. DOI: 10.1103/Physrevb.78.233306  0.774
2008 Gunawan O, Gokmen T, De Poortere EP, Shayegan M. Characterization of the anomalous giant piezoresistance in AlAs two-dimensional electrons with anti-dot lattices Semiconductor Science and Technology. 23: 085005. DOI: 10.1088/0268-1242/23/8/085005  0.804
2008 Bishop NC, Padmanabhan M, Gunawan O, Gokmen T, De Poortere EP, Shkolnikov YP, Tutuc E, Vakili K, Shayegan M. Valley susceptibility of interacting electrons and composite fermions Physica E: Low-Dimensional Systems and Nanostructures. 40: 986-989. DOI: 10.1016/J.Physe.2007.08.067  0.768
2007 Shayegan M, De Poortere EP, Gunawan O, Shkolnikov YP, Tutuc E, Vakili K. Quantum hall effect in a multi-valley two-dimensional electron system International Journal of Modern Physics B. 21: 1388-1397. DOI: 10.1142/S0217979207042884  0.793
2007 Gunawan O, De Poortere EP, Shayegan M. AlAs two-dimensional electrons in an antidot lattice: Electron pinball with elliptical Fermi contours Physical Review B - Condensed Matter and Materials Physics. 75. DOI: 10.1103/Physrevb.75.081304  0.777
2007 Gunawan O, Gokmen T, Vakili K, Padmanabhan M, De Poortere EP, Shayegan M. Spin-valley phase diagram of the two-dimensional metal-insulator transition Nature Physics. 3: 388-391. DOI: 10.1038/Nphys596  0.769
2006 Gunawan O, Shkolnikov YP, Vakili K, Gokmen T, De Poortere EP, Shayegan M. Valley susceptibility of an interacting two-dimensional electron system. Physical Review Letters. 97: 186404. PMID 17155564 DOI: 10.1103/Physrevlett.97.186404  0.789
2006 Vakili K, Gokmen T, Gunawan O, Shkolnikov YP, De Poortere EP, Shayegan M. Dependence of persistent gaps at landau level crossings on relative spin. Physical Review Letters. 97: 116803. PMID 17025916 DOI: 10.1103/Physrevlett.97.116803  0.769
2006 Gunawan O, Habib B, De Poortere EP, Shayegan M. Quantized conductance in an AlAs two-dimensional electron system quantum point contact Physical Review B - Condensed Matter and Materials Physics. 74. DOI: 10.1103/Physrevb.74.155436  0.764
2006 Shayegan M, De Poortere EP, Gunawan O, Shkolnikov YP, Tutuc E, Vakili K. Two-dimensional electrons occupying multiple valleys in AlAs Physica Status Solidi (B) Basic Research. 243: 3629-3642. DOI: 10.1002/Pssb.200642212  0.794
2004 Gunawan O, Shkolnikov YP, Poortere EP, Tutuc E, Shayegan M. Ballistic electron transport in AlAs quantum wells. Physical Review Letters. 93: 246603. PMID 15697841 DOI: 10.1103/Physrevlett.93.246603  0.797
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