Lead-Free Halide Double Perovskites: A Review of the Structural, Optical, and Stability Properties as Well as Their Viability to Replace Lead Halide Perovskites
Lead-Free Halide Double Perovskites: A Review of the Structural, Optical, and Stability Properties as Well as Their Viability to Replace Lead Halide Perovskites
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DOI：
10.3390/met8090667
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发表时间：
2018-08
期刊：
影响因子：
2.9
通讯作者：
E. Meyer;Dorcas Mutukwa;Nyengerai Zingwe;Raymond Tichaona Taziwa
中科院分区：
文献类型：
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作者：
E. Meyer;Dorcas Mutukwa;Nyengerai Zingwe;Raymond Tichaona Taziwa
钙钛矿太阳能电池使用卤化铅钙钛矿材料作为光吸收剂。这些钙钛矿材料显示出卓越的光电性能，使钙钛矿太阳能电池成为快速发展的太阳能技术。Permium太阳能电池的效率达到了创纪录的20%以上，这已经取代了Gräztel染料敏化太阳能电池（DSSC）技术的效率。即使具有优异的光学和电学性质，卤化铅钙钛矿也具有差的稳定性。它们在暴露于水分、热量和紫外线辐射时会降解，这阻碍了它们的商业化。此外，卤化物钙钛矿材料由有毒的铅组成。因此，接触这些材料会对人类健康产生有害影响。研究了具有A2 B ′B″X6（A = Cs，MA; B′ = Bi，Sb; B″ = Cu，Ag，和X = Cl，Br，I）的卤化物双钙钛矿作为卤化铅钙钛矿的潜在替代物。这项工作的重点是提供一个详细的审查这些建议的钙钛矿的结构，光学和稳定性，以及它们的可行性，以取代铅卤化物钙钛矿。本文详细讨论了拟议的无铅A2 B 'B“X6双钙钛矿的胜利和挑战。
Perovskite solar cells employ lead halide perovskite materials as light absorbers. These perovskite materials have shown exceptional optoelectronic properties, making perovskite solar cells a fast-growing solar technology. Perovskite solar cells have achieved a record efficiency of over 20%, which has superseded the efficiency of Gräztel dye-sensitized solar cell (DSSC) technology. Even with their exceptional optical and electric properties, lead halide perovskites suffer from poor stability. They degrade when exposed to moisture, heat, and UV radiation, which has hindered their commercialization. Moreover, halide perovskite materials consist of lead, which is toxic. Thus, exposure to these materials leads to detrimental effects on human health. Halide double perovskites with A2B′B″X6 (A = Cs, MA; B′ = Bi, Sb; B″ = Cu, Ag, and X = Cl, Br, I) have been investigated as potential replacements of lead halide perovskites. This work focuses on providing a detailed review of the structural, optical, and stability properties of these proposed perovskites as well as their viability to replace lead halide perovskites. The triumphs and challenges of the proposed lead-free A2B′B″X6 double perovskites are discussed here in detail.