Commercially available jeffamine additives for p-i-n perovskite solar cells

被引:8
作者
Hsu, Hsiang-Lin [1 ,2 ]
Jiang, Bing-Huang [1 ,2 ]
Chung, Chung-Lin [3 ]
Yu, Yang-Yen [3 ]
Jeng, Ru-Jong [1 ,2 ]
Chen, Chih-Ping [3 ]
机构
[1] Natl Taiwan Univ, Inst Polymer Sci & Engn, Taipei 106, Taiwan
[2] Natl Taiwan Univ, Adv Res Ctr Green Mat Sci & Technol, Taipei 106, Taiwan
[3] Ming Chi Univ Technol, Dept Mat Engn, New Taipei 243, Taiwan
关键词
additive; defect passivation; coordination bonds; perovskite solar cell; photoelectric conversion efficiency; HIGH-EFFICIENCY; HIGHLY EFFICIENT; HALIDE PEROVSKITES; AMBIENT AIR; PERFORMANCE; STABILITY; FILMS; PASSIVATION; MORPHOLOGY; GROWTH;
D O I
10.1088/1361-6528/ab7de1
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
Commercially available Jeffamines (polyetheramine) with average molecular weights of 2000 and 3000 g mol(-1); one (M2005), two (D2000), and three (T3000) primary amino groups end-capping on the polyether backbone; and propylene oxide (PO) and ethylene oxide (EO) functionality were explored as additives for application in MAPbI(3) perovskite solar cells (PSCs). The results indicated that the embedding of Jeffamine additives effectively passivates the defects in the grain boundaries of perovskite through the coordination bonding between the nitrogen atom and the uncoordinated lead ion of perovskite. We fabricated p-i-n PSC devices with the structure of glass/indium tin oxide (ITO)/NiOx/CH3NH3PbI3 (with and without Jeffamine)/PC61BM/BCP/Ag. We observed the interaction between the Jeffamine and perovskites. This interaction led to increased lifetimes of the carriers of perovskite, which enabled the construction of high-performance p-i-n PSCs. For the Jeffamine-D2000-derived device, we observed an increase in the power conversion efficiency from 14.5% to 16.8% relative to the control device. Furthermore, the mechanical properties of the perovskite films were studied. The interaction between the additive and perovskite reinforced the flexibility of the thin film, which may pave the way for stretchable optoelectronics.
引用
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页数:9
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