期刊
SUSTAINABLE ENERGY & FUELS
卷 4, 期 10, 页码 5042-5049出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/d0se00786b
关键词
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资金
- JSPS KAKENHI [18H02079]
- National Institute for Materials Science (NIMS)
- Anna University, Chennai
- Deanship of Scientific Research at King Saud University [RG-1438-041]
Bismuth based perovskites are emerging as a candidate for photovoltaic applications due to their low-toxicity, high structural stability, and suitable applications in photovoltaic applications. Here in this work, bismuth halide perovskite films with the stoichiometric composition of ABi(3)I(10)(A = Cs, FA and MA) are synthesized by a one step solution process. By optimizing the appropriate anti-solvent dripping techniques, the surface morphology and optical properties of these perovskite thin films have been improved. Among the synthesized materials, CsBi(3)I(10)perovskite showed extended absorption up to 700 nm and the bandgap was reduced to 1.75 eV. An inverted planar perovskite solar cell (PSC) employing the CsBi(3)I(10)as an absorber layer was fabricated which showed a maximum power conversion efficiency of 0.63%. In addition, the fabricated PSC exhibited a red-shifted incident photon to current conversion efficiency (IPCE) up to 740 nm, which is higher than those of the existing bismuth-based PSCs. This improvement in the IPCE shows the potential of CsBi(3)I(10)as an absorber for Pb-free PSCs.
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