Journal
NANO RESEARCH
Volume 9, Issue 6, Pages 1570-1577Publisher
TSINGHUA UNIV PRESS
DOI: 10.1007/s12274-016-1051-8
Keywords
lead-free perovskite; perovskite solar cells; low-temperature process; fullerene; molybdenum oxide
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Funding
- CRC
- ARC DP
- ARC FT
- Chinese Scholarship Council (CSC)
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A new type of lead-free, formamidinium (FA)-based halide perovskites, FASnI(2)Br, are investigated as light-harvesting materials for low-temperature processed p-i-n heterojunction solar cells with different configurations. The FASnI(2)Br perovskite, with a band-gap of 1.68 eV, exhibits optimal photovoltaic performance after low-temperature annealing at 75 A degrees C. By using C-60 as electron-transport layer, the device yields a hysteresis-less power conversion efficiency of 1.72%. The possible use of an inorganic MoO (x) film as a new type of independent hole-transport layer for the present tin-based perovskite solar cells is also demonstrated.
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