期刊
JOURNAL OF MATERIALS CHEMISTRY A
卷 8, 期 31, 页码 15670-15674出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/d0ta02237c
关键词
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资金
- European Union Programme for Research and Innovation Horizon 2020 (2014-2020) under the Marie Sklodowska-Curie Grant Agreement PerovSAMs [747599]
- European Research Council (ERC) under the European Union [834431]
- Spanish Ministry of Science, Innovation and Universities (ex-MINECO) via the Unidad de Excelencia Maria de Maeztu [MDM-2015-0538, MAT2017-88821-R, RTI2018-095362-A-I00, PCI2019-111829-2, EQC2018-004888-P, PCIN2015-255]
- Generalitat Valenciana [Prometeo/2016/135, IDIFEDER/2018/061]
- Spanish Ministry of Science [FPU18/01732]
- la Caixa Foundation [100010434]
- Spanish Ministry of Science Innovation and Universities (ex-MINECO)
- European Union [763977]
- [LCF/BQ/DI19/11730020]
Herein we demonstrate the dry synthesis of CsBi(3)I(10)both as a free-standing material and in the form of homogeneous thin films, deposited by thermal vacuum deposition. Chemical and optical characterization shows high thermal stability, phase purity, and photoluminescence centered at 700 nm, corresponding to a bandgap of 1.77 eV. These characteristics make CsBi(3)I(10)a promising low-toxicity material for wide bandgap photovoltaics. Nevertheless, the performance of this material as a semiconductor in solar cells remains rather limited, which can be at least partially ascribed to a low charge carrier mobility, as determined from pulsed-radiolysis time-resolved microwave conductivity. Further developments should focus on understanding and overcoming the current limitations in charge mobility, possibly by compositional tuning through doping and/or alloying, as well as optimizing the thin film morphology which may be another limiting factor.
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