Frontier applications of perovskites beyond photovoltaics

• 作者: Luyao Mei Haoran Mu Lu Zhu Shenghuang Lin Lixiu Zhang Liming Ding
• 来源期刊: 半导体学报（英文版）
• 年，卷（期）: 2022,（4）
• 所属期刊栏目: RESEARCH HIGHLIGHTS
• 页码范围: 9-11
• 页数: 3页
• 语种: 英文
• DOI: 10.1088/1674-4926/43/4/040203

摘要

Perovskites have been widely utilized as active materials in various optoelectronic devices,e.g.light-emitting diodes(LEDs),photodetectors(PDs),and solar cells(SCs),etc.,due to their facile processability and outstanding optoelectronic prop-erties,like high optical absorption coefficients(～105 cm-1),high carrier mobilities(～10-103 cm2/(V·s)),long carrier life-time(～1-10 μs),long carrier diffusion length(1-100 μm)and tunable bandgaps(～1.17-2.88 eV),which enable them to deliv-er a comparable performance as traditional inorganic semicon-ductors.Perovskite LEDs offer 12.2％,22.2％,28.1％and 12.8％EQEsfor white LEDs[1],near-infra red(NIR)LEDs[2],green LEDs[3]and blue LEDs[4],respectively.The efficiency for perovskite/Si tandem SCs reaches 29.8％,which is greater than that for sil-icon single crystal-based SCs(26.1％)and that for thin-film crys-talline silicon-based SCs(21.2％)[5].Moreover,the specific de-tectivity for Sn-Pb perovskite-based PDs reaches～1012 Jones at 1000 nm,which is much greater than that for germanium-based PDs(～1011 Jones)[6].Here,we highlight other applica-tions in neuromorphic computing,synapse devices and ultra-sound imaging[7-9].