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Simplified Perovskite Solar Cell with 4.1% Efficiency Employing Inorganic CsPbBr 3 as Light Absorber
Author(s) -
Duan Jialong,
Zhao Yuanyuan,
He Benlin,
Tang Qunwei
Publication year - 2018
Publication title -
small
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.785
H-Index - 236
eISSN - 1613-6829
pISSN - 1613-6810
DOI - 10.1002/smll.201704443
Subject(s) - perovskite (structure) , materials science , perovskite solar cell , solar cell , energy conversion efficiency , quantum dot , tin oxide , optoelectronics , graphene , band gap , halide , semiconductor , nanotechnology , doping , chemical engineering , inorganic chemistry , chemistry , engineering
Perovskite solar cells with cost‐effectiveness, high power conversion efficiency, and improved stability are promising solutions to the energy crisis and environmental pollution. However, a wide‐bandgap inorganic–semiconductor electron‐transporting layer such as TiO 2 can harvest ultraviolet light to photodegrade perovskite halides, and the high cost of a state‐of‐the‐art hole‐transporting layer is an economic burden for commercialization. Here, the building of a simplified cesium lead bromide (CsPbBr 3 ) perovskite solar cell with fluorine‐doped tin oxide (FTO)/CsPbBr 3 /carbon architecture by a multistep solution‐processed deposition technology is demonstrated, achieving an efficiency as high as 4.1% and improved stability upon interfacial modification by graphene quantum dots and CsPbBrI 2 quantum dots. This work provides new opportunities of building next‐generation solar cells with significantly simplified processes and reduced production costs.