https://scholars.lib.ntu.edu.tw/handle/123456789/485923
標題: | Solution-processable antimony-based light-absorbing materials beyond lead halide perovskites | 作者: | Boopathi, K.M. Karuppuswamy, P. Singh, A. Hanmandlu, C. Lin, L. Abbas, S.A. Chang, C.C. Wang, P.C. Li, G. Chu, C.W. CHIEN-CHENG CHANG |
公開日期: | 2017 | 卷: | 5 | 期: | 39 | 起(迄)頁: | 20843-20850 | 來源出版物: | Journal of Materials Chemistry A | 摘要: | Organic-inorganic lead halide perovskites have recently emerged as highly competitive light absorbing materials for low cost solution-processable photovoltaic devices. With the high efficiency already achieved, removing the toxicity, i.e., lead-free and stability are the key obstacles for perovskite solar cells. Here, we report the synthesis of an antimony (Sb)-based hybrid material having the composition of A3Sb2I9 [A = CH3NH3 (MA), Cs] and an investigation of its potential photovoltaic applications. Sb-based perovskite-like materials exhibited attractive absorbance properties, with the band gaps of MA3Sb2I9 and Cs3Sb2I9 measured to be 1.95 and 2.0 eV, respectively. X-ray photoelectron spectroscopy confirmed the formation of stoichiometric perovskites from appropriate precursor molar ratios incorporated with hydroiodic acid (HI). Planar hybrid Sb-based solar cells exhibited negligible hysteresis and reproducible power output under working conditions. A power conversion efficiency of 2.04% was achieved by the MA3Sb2I9 perovskite-based device - the highest reported to date for a Sb-based perovskite solar cell. © 2017 The Royal Society of Chemistry. |
URI: | https://scholars.lib.ntu.edu.tw/handle/123456789/485923 | DOI: | 10.1039/c7ta06679a | SDG/關鍵字: | Efficiency; Energy gap; Hybrid materials; Perovskite; Perovskite solar cells; X ray photoelectron spectroscopy; Absorbance properties; Absorbing materials; Halide perovskites; Organic-inorganic; Photovoltaic applications; Photovoltaic devices; Power conversion efficiencies; Solution processable; Solar cells |
顯示於: | 應用力學研究所 |
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