Progress of All-inorganic Cesium Lead-free Perovskite Solar Cells

Metal halide-based perovskite solar cells (PSCs) have developed rapidly due to exceptional optoelectronic properties of perovskite materials (such as high optical absorption coefficient, long charge carrier lifetime, long diffusion length, high carrier mobility and tunable bandgaps) and low-cost fab...

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Bibliographic Details
Published in:Chemistry letters 2019-06, Vol.48 (8), p.989-1005
Main Authors: Li, Xiaotong, Wu, Jinbo, Wang, Shenghao, Qi, Yabing
Format: Article
Language:English
Subjects:
Absorptivity
Antimony
Barriers
Bismuth
Carrier lifetime
Carrier mobility
Cesium
Commercialization
Current carriers
Diffusion length
Energy conversion efficiency
Germanium
Lead compounds
Lead free
Metal halides
Optical properties
Optoelectronics
Perovskites
Photovoltaic cells
Silver
Solar cells
Stability
Tin
Toxicity
Viability
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Summary:Metal halide-based perovskite solar cells (PSCs) have developed rapidly due to exceptional optoelectronic properties of perovskite materials (such as high optical absorption coefficient, long charge carrier lifetime, long diffusion length, high carrier mobility and tunable bandgaps) and low-cost fabrication processes. The record power conversion efficiency has exceeded 24%, demonstrating the great potential for photovoltaic application. However, the lead toxicity and instability still present as major obstacles for commercialization. In principle, Pb can be replaced with other less-toxic as well as environmentally benign metals, such as Ag, Na, Sn, Ge, Bi, Sb and Ti, to solve the toxicity issue. Replacing methylammonium (MA+) or formamidinium (FA+) with cesium (Cs+) represents a promising direction to address the instability issue. Herein, we review the recent progress of all-inorganic cesium lead-free halide PSCs. At the end, we outline challenges and future directions.
ISSN:0366-7022
1348-0715
DOI:10.1246/cl.190270