Solution-processable antimony-based light-absorbing materials beyond lead halide perovskites

被引:185
作者
Boopathi, Karunakara Moorthy [1 ]
Karuppuswamy, Priyadharsini [1 ,2 ,3 ]
Singh, Anupriya [1 ]
Hanmandlu, Chintam [4 ]
Lin, Lin [5 ]
Abbas, Syed Ali [1 ,2 ,3 ]
Chang, Chien Cheng [6 ]
Wang, Pen Cheng [2 ]
Li, Gang [7 ]
Chu, Chih Wei [1 ,4 ]
机构
[1] Acad Sinica, Res Ctr Appl Sci, Taipei 115, Taiwan
[2] Natl Tsing Hua Univ, Dept Engn & Syst Sci, Hsinchu 30013, Taiwan
[3] Natl Tsing Hua Univ, Acad Sinica, Taiwan Int Grad Program, Nano Sci & Technol, Hsinchu, Taiwan
[4] Chang Gung Univ, Coll Engn, Taoyuan, Taiwan
[5] Guangxi Univ, Coll Mech Engn, 100,Daxue Dong Rd, Nanning 530004, Peoples R China
[6] Natl Taiwan Univ, Inst Appl Mech, Roosevelt Rd, Taipei 106, Taiwan
[7] Hong Kong Polytech Univ, Dept Elect & Informat Engn, Kowloon, Hong Kong, Peoples R China
关键词
SOLAR-CELLS; THIN-FILMS; TRANSPORT; LENGTHS; CS3SB2I9; LAYERS; FIELD;
D O I
10.1039/c7ta06679a
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
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 A(3)Sb(2)I(9) [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 MA(3)Sb(2)I(9) 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 MA(3)Sb(2)I(9) perovskite-based device-the highest reported to date for a Sb-based perovskite solar cell.
引用
收藏
页码:20843 / 20850
页数:8
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