Journal
CHEMSUSCHEM
Volume 13, Issue 24, Pages 6477-6497Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/cssc.202001680
Keywords
all-inorganic; perovskite; phase stability; solar cells; tin
Funding
- Natural Science Foundation of China [51972172, 61705102, 91833304, 51802253]
- Natural Science Basic Research Plan in Shaanxi Province of China [2019JM-326]
- Young 1000 Talents Global Recruitment Program of China
- Jiangsu Specially Appointed Professor program
- Fundamental Research Funds for the Central Universities
- Six talent peaks Project in Jiangsu Province, China
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Recently, the power conversion efficiency (PCE) of perovskite solar cells (PSC) based on organic-inorganic hybrid Pb halide perovskites has reached 25.2 %. However, the toxicity of Pb has still been a main concern for the large-scale commercialization of Pb-based PSCs. Efforts have been made during the past few years to seek eco-friendly Pb-free perovskites, and it is a growing consensus that Sn is the best choice as Pb alternative over any other Pb-free metal elements. Among Sn-based perovskites, all-inorganic cells are promising candidates for PSCs owing to their more suitable bandgap, better stability, and higher charge mobility compared to the organic-inorganic hybrid counterparts. However, the poor phase stability of all-inorganic Sn-based perovskites (AISPs) and low PCE of their PSCs are most challenging in the field at present. Herein, recent developments on PSCs based on AISPs, including CsSnX(3)and Cs2SnX6(X=Br, I), are comprehensively reviewed. Primarily, the intrinsic characteristics of the two AISPs are overviewed, including crystallographic property, band structure, charge carrier property, and defect property. Sequentially, state-of-the-art progress, regarding the photovoltaic application of AISPs as light absorber, is summarized. At last, current challenges and future opportunities of AISP-based PSCs are also discussed.
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