TY - JOUR
T1 - Giant improvement of performances of perovskite solar cells via component engineering
AU - Wei, Qingbo
AU - Chang, Dongpu
AU - Ye, Zhangwen
AU - Li, Xue
AU - Zan, Lingxing
AU - Gao, Loujun
AU - Fu, Feng
AU - Yang, Dong
N1 - Funding Information:
The authors appreciate the financial support from the National Natural Science Foundation of China ( 21663030 ; 21666039 and 61975106 ), the Shaanxi Provincial Science and Technology Plan Project (2020JM-546 and 2020JQ-792), the Key Laboratory of Education Department of Shaanxi Province (20JS153), the Doctoral Research Initial Funding from Yan'an University (YDBK2017-14), the Natural Science Foundation of Yan'an University (YDQ2018-15) and the College Students' Innovation and Entrepreneurship Project of Shaanxi Province.
Publisher Copyright:
© 2020 Elsevier Inc.
PY - 2021/4/15
Y1 - 2021/4/15
N2 - The absorption layer is a crucial factor for high-performance perovskite solar cells. In this work, the influence of the two components, methylammonium iodide (MAI) and formamidinium iodide (FAI) on the morphology, optical absorption and photovoltaic performances was systematically investigated. The results revealed that the surface morphologies of MAI/FAI based perovskite films were rougher, and the grain sizes became larger with increasing the FAI concentration. UV–Vis and photoluminescence spectra showed that there was a red shift with enhancing the FAI concentration. By the effective doping of FAI into the pristine MAI based perovskite film, the formation of a δ-FAPbI3 was successfully inhibited. As a result, the power conversion efficiency (PCE) of the perovskite solar cells based on mixed absorption layers was improved by about 27% compared to the pristine MAI based perovskite device.
AB - The absorption layer is a crucial factor for high-performance perovskite solar cells. In this work, the influence of the two components, methylammonium iodide (MAI) and formamidinium iodide (FAI) on the morphology, optical absorption and photovoltaic performances was systematically investigated. The results revealed that the surface morphologies of MAI/FAI based perovskite films were rougher, and the grain sizes became larger with increasing the FAI concentration. UV–Vis and photoluminescence spectra showed that there was a red shift with enhancing the FAI concentration. By the effective doping of FAI into the pristine MAI based perovskite film, the formation of a δ-FAPbI3 was successfully inhibited. As a result, the power conversion efficiency (PCE) of the perovskite solar cells based on mixed absorption layers was improved by about 27% compared to the pristine MAI based perovskite device.
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U2 - 10.1016/j.jcis.2020.12.046
DO - 10.1016/j.jcis.2020.12.046
M3 - Article
C2 - 33422788
AN - SCOPUS:85098936597
SN - 0021-9797
VL - 588
SP - 393
EP - 400
JO - Journal of Colloid And Interface Science
JF - Journal of Colloid And Interface Science
ER -
