Overcoming Short-Circuit in Lead-Free CH3NH3SnI3 Perovskite Solar Cells via Kinetically Controlled Gas–Solid Reaction Film Fabrication Process

Yokoyama, Takamichi; Cao, Duyen H.; Stoumpos, Constantinos C.; Song, Tze-Bin; Sato, Yoshiharu; Aramaki, Shinji; Kanatzidis, Mercouri G.

doi:10.1021/acs.jpclett.6b00118

Title: Overcoming Short-Circuit in Lead-Free CH₃NH₃SnI₃ Perovskite Solar Cells via Kinetically Controlled Gas–Solid Reaction Film Fabrication Process

Journal Article · Mon Feb 15 00:00:00 EST 2016 · Journal of Physical Chemistry Letters

DOI:https://doi.org/10.1021/acs.jpclett.6b00118· OSTI ID:1371251

Yokoyama, Takamichi ^[1]; Cao, Duyen H. ^[2]; Stoumpos, Constantinos C. ^[2]; Song, Tze-Bin ^[2]; Sato, Yoshiharu ^[3]; Aramaki, Shinji ^[3]; Kanatzidis, Mercouri G. ^[2]

Northwestern Univ., Evanston, IL (United States); Mitsubishi Chemical Group Science & Technology Research Center, Inc., Yokohama (Japan)
Northwestern Univ., Evanston, IL (United States)
Mitsubishi Chemical Group Science & Technology Research Center, Inc., Yokohama (Japan)

The development of Sn-based perovskite solar cells has been challenging because devices often show short-circuit behavior due to poor morphologies and undesired electrical properties of the thin films. A low-temperature vapor-assisted solution process (LT-VASP) has been employed as a novel kinetically controlled gas–solid reaction film fabrication method to prepare lead-free CH₃NH₃SnI₃ thin films. We show that the solid SnI₂ substrate temperature is the key parameter in achieving perovskite films with high surface coverage and excellent uniformity. The resulting high-quality CH₃NH₃SnI₃ films allow the successful fabrication of solar cells with drastically improved reproducibility, reaching an efficiency of 1.86%. Furthermore, our Kelvin probe studies show the VASP films have a doping level lower than that of films prepared from the conventional one-step method, effectively lowering the film conductivity. Above all, with (LT)-VASP, the short-circuit behavior often obtained from the conventional one-step-fabricated Sn-based perovskite devices has been overcome. Finally, this study facilitates the path to more successful Sn-perovskite photovoltaic research.

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Research Organization:: Energy Frontier Research Centers (EFRC) (United States). Argonne-Northwestern Solar Energy Research Center (ANSER)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES); National Science Foundation (NSF)

Grant/Contract Number:: SC0001059; DMR-1121262

OSTI ID:: 1371251

Journal Information:: Journal of Physical Chemistry Letters, Vol. 7, Issue 5; Related Information: ANSER partners with Northwestern University (lead); Argonne National Laboratory; University of Chicago; University of Illinois, Urbana-Champaign; Yale University; ISSN 1948-7185

Publisher:: American Chemical SocietyCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 247 works

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Optoelectronic Properties and Defect Physics of Lead-Free Photovoltaic Absorbers ${Cs}_{2} {Au}^{I} {Au}^{III} X_{6}$ ( $X = I, Br$ ) Kangsabanik, Jiban; Ghorui, Supriti; Aslam, M. Physical Review Applied, Vol. 13, Issue 1 https://doi.org/10.1103/physrevapplied.13.014005	journal	January 2020
Double perovskites overtaking the single perovskites: A set of new solar harvesting materials with much higher stability and efficiency Kangsabanik, Jiban; Sugathan, Vipinraj; Yadav, Anuradha Physical Review Materials, Vol. 2, Issue 5 https://doi.org/10.1103/physrevmaterials.2.055401	journal	May 2018
Enhanced photovoltaic performance and stability with a new type of hollow 3D perovskite {en}FASnI ₃ Ke, Weijun; Stoumpos, Constantinos C.; Zhu, Menghua Science Advances, Vol. 3, Issue 8 https://doi.org/10.1126/sciadv.1701293	journal	August 2017
Carrier lifetimes of >1 μs in Sn-Pb perovskites enable efficient all-perovskite tandem solar cells Tong, Jinhui; Song, Zhaoning; Kim, Dong Hoe Science, Vol. 364, Issue 6439 https://doi.org/10.1126/science.aav7911	journal	April 2019
Growth of Metal Halide Perovskite, from Nanocrystal to Micron-Scale Crystal: A Review Ma, Haijiao; Imran, Muhammad; Dang, Zhiya Crystals, Vol. 8, Issue 5 https://doi.org/10.3390/cryst8050182	journal	April 2018
Lead-free hybrid perovskites for photovoltaics Stroyuk, Oleksandr Beilstein Journal of Nanotechnology, Vol. 9 https://doi.org/10.3762/bjnano.9.207	journal	January 2018
Lead‐Free Solar Cells based on Tin Halide Perovskite Films with High Coverage and Improved Aggregation Liu, Jiewei; Ozaki, Masashi; Yakumaru, Shinya Angewandte Chemie, Vol. 130, Issue 40 https://doi.org/10.1002/ange.201808385	journal	September 2018
Formation of Stable Tin Perovskites Co-crystallized with Three Halides for Carbon-Based Mesoscopic Lead-Free Perovskite Solar Cells Tsai, Cheng-Min; Mohanta, Nayantara; Wang, Chi-Yung Angewandte Chemie, Vol. 129, Issue 44 https://doi.org/10.1002/ange.201707037	journal	September 2017
Reversible Band Gap Narrowing of Sn-Based Hybrid Perovskite Single Crystal with Excellent Phase Stability Ju, Dianxing; Zheng, Xiaopeng; Liu, Jialiang Angewandte Chemie International Edition, Vol. 57, Issue 45 https://doi.org/10.1002/anie.201810481	journal	October 2018
Double Perovskites overtaking the single perovskites : A set of new solar harvesting materials with much higher stability and efficiency Kangsabanik, Jiban; Sugathan, Vipinraj; Yadav, Anuradha arXiv https://doi.org/10.48550/arxiv.1801.07078	text	January 2018
Recent Advances in Synthesis and Properties of Hybrid Halide Perovskites for Photovoltaics Vidyasagar, C. C.; Muñoz Flores, Blanca M.; Jiménez Pérez, Víctor M. Nano-Micro Letters, Vol. 10, Issue 4 https://doi.org/10.1007/s40820-018-0221-5	journal	September 2018
Solvent-Coordinated Tin Halide Complexes as Purified Precursors for Tin-Based Perovskites Ozaki, Masashi; Katsuki, Yukie; Liu, Jiewei ACS Omega, Vol. 2, Issue 10 https://doi.org/10.1021/acsomega.7b01292	journal	October 2017
Morphology Analysis and Optimization: Crucial Factor Determining the Performance of Perovskite Solar Cells Zeng, Wenjin; Liu, Xingming; Guo, Xiangru Molecules, Vol. 22, Issue 4 https://doi.org/10.3390/molecules22040520	journal	March 2017

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36 MATERIALS SCIENCE
14 SOLAR ENERGY
catalysis (homogeneous)
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solar (photovoltaic)
solar (fuels)
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Title: Overcoming Short-Circuit in Lead-Free CH₃NH₃SnI₃ Perovskite Solar Cells via Kinetically Controlled Gas–Solid Reaction Film Fabrication Process