Thermally evaporated methylammonium tin triiodide thin films for lead-free perovskite solar cell fabrication
- The Univ. of Toledo, Toledo, OH (United States)
- Nanjing Univ. of Posts & Telecommunications, Nanjing (People's Republic of China)
- National Renewable Energy Lab. (NREL), Golden, CO (United States)
Here, we report on the synthesis of methylammonium tin triiodide (MASnI3) thin films at room temperature by a hybrid thermal evaporation method and their application in fabricating lead (Pb)-free perovskite solar cells. The as-deposited MASnI3 thin films exhibit smooth surfaces, uniform coverage across the entire substrate, and strong crystallographic preferred orientation along the < 100 > direction. By incorporating this film with an inverted planar device architecture, our Pb-free perovskite solar cells are able to achieve an open-circuit voltage (Voc) up to 494 mV. The relatively high Voc is mainly ascribed to the excellent surface coverage, the compact morphology, the good stoichiometry control of the MASnI3 thin films, and the effective passivation of the electron-blocking and hole-blocking layers. Finally, our results demonstrate the potential capability of the hybrid evaporation method to prepare high-quality Pb-free MASnI3 perovskite thin films which can be used to fabricate efficient Pb-free perovskite solar cells.
- Research Organization:
- National Renewable Energy Lab. (NREL), Golden, CO (United States)
- Sponsoring Organization:
- USDOE Office of Energy Efficiency and Renewable Energy (EERE), Renewable Power Office. Solar Energy Technologies Office; USDOE SunShot Initiative, Next Generation Photovoltaics 3 Program
- Grant/Contract Number:
- AC36-08GO28308
- OSTI ID:
- 1329460
- Report Number(s):
- NREL/JA-5900-67300; RSCACL
- Journal Information:
- RSC Advances, Vol. 6, Issue 93; ISSN 2046-2069
- Publisher:
- Royal Society of ChemistryCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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