文献类型：期刊文献

英文题名：The Effect of Energy Level of Transport Layer on the Performance of Ambient Air Prepared Perovskite Solar Cell: A SCAPS-1D Simulation Study

作者：Chen, Qinmiao[1];Ni, Yi[1];Dou, Xiaoming[1,2];Yoshinori, Yamaguchi[2]

机构：[1]East China Univ Sci & Technol, Sch Phys, 130 Meilong Rd, Shanghai 200237, Peoples R China;[2]Osaka Univ, Grad Sch Engn, Dept Appl Phys, Suita, Osaka 5650871, Japan

年份：2022

卷号：12

期号：1

外文期刊名：CRYSTALS

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000747813100001)】；

基金：The project was supported by the National Natural Science Foundation of China (No. 11604097).

语种：英文

外文关键词：perovskite solar cells; ambient air; SCAPS-1D; carrier features

摘要：The perovskite solar cell (PSC) as an emerging and promising type has been extensively studied. In this study, a model for a PSC prepared in ambient air was established by using SCAPS-1D. After that, it was further analyzed through varying the defect density of the perovskite absorber layer (N-t), the thin film thickness and energy-level matching between the electron transport layer (ETL), the perovskite absorber layer and the hole transport layer (HTL), for a better understanding of the carrier features. The N-t varied from 1.000 x 10(11) to 1.000 x 10(17) cm(-3). The performance of the solar cell is promoted with improved N-t. When N-t is at 1.000 x 10(15) cm(-3), the carrier diffusion length reaches mu m, and the carrier lifetime comes to 200 nm. The thickness of the absorber layer was changed from 200 to 600 nm. It is shown that the absorber layer could be prepared thinner for reducing carrier recombination when at high N-t. The thickness effect of ETL and HTL is weakened, since N-t dominates the solar cell performance. The effect of the affinity of ETL (3.4-4.3 eV) and HTL (2.0-2.7 eV), together with three energy-level matching situations "ETL(4.2)+HTL(2.5)", "ETL(4.0)+HTL(2.2)" and "ETL(4.0)+HTL(2.5)" on the performance of the solar cell were analyzed. It was found that the HTL with valence band 0.05 eV lower than that of the perovskite absorber layer could have a blocking effect that reduced carrier recombination. The effect of energy-level matching becomes more important with improved N-t. Energy-level matching between the ETL and perovskite absorber layer turns out counterbalance characteristic on J(sc) and V-oc, and the "ETL(4.0)+HTL(2.5)" case can result in solar cell with J(sc) of 27.58 mA/cm(2), V-oc of 1.0713 V, FF of 66.02% and efficiency of 19.51%. The findings would be very useful for fabricating high-efficiency and low-cost PSC by a large-scale ambient air route.