Zheng Fang; Bingru Deng; Yongbin Jin; Yang Liu; Lisha Chen; Yawen Zhong; Huiping Feng; Yue Yin; Kaikai Liu; Yingji Li; Jinyan Zhang; Jiarong Huang; Qinghua Zeng; Hao Wang; Xing Yang; Jinxin Yang; Chengbo Tian; Liqiang Xie; Zhanhua Wei; Xipeng Xu · 2024 · Nature Communications
Paper
Wide-bandgap perovskite solar cells (WBG-PSCs) are critical for developing perovskite/silicon tandem solar cells. The defect-rich surface of WBG-PSCs will lead to severe interfacial carrier loss and phase segregation, deteriorating the device’s performance. Herein, we develop a surface reconstruction method by removing the defect-rich crystal surface by nano-polishing and then passivating the newly exposed high-crystallinity surface. This method can refresh the perovskite/electron-transporter interface and release the residual lattice strain, improving the charge collection and inhibiting the ion migration of WBG perovskites. As a result, we can achieve certified efficiencies of 23.67% and 21.70% for opaque and semi-transparent PSCs via a 1.67-eV perovskite absorber. Moreover, we achieve four-terminal perovskite/silicon tandem solar cells with a certified efficiency of 33.10% on an aperture area of one square centimeter. The defect-rich surface of wide-bandgap perovskite solar cells leads to severe interfacial carrier loss and phase segregation. Here, the authors reconstruct the surface through nano-polishing followed by passivation, achieving certified efficiency of 33.1% for perovskite/silicon tandem solar cells.
Analysis
This paper presents a surface reconstruction method for wide-bandgap perovskite solar cells (WBG-PSCs) that improves their performance in perovskite/silicon tandem devices by addressing interfacial carrier loss and phase segregation.
Discovery
Constantin Bach; Dong Won Kim; Yitian Du; Yana Vaynzof; Carsten Deibel
Oussama Er-Riyahi; Dorota Biernacka; Yating Guo; Mikel Ballarena Tellechea; Silver-Hamill Turren-Cruz; Dario Bercioux; Meng Li; Agnieszka Lekawa-Raus; Jorge Pascual; Karolina Z. Milowska
Dilfuza Shukurova
Elisabetta Brivio; Luigi Vesce; Andrea Danelli; Sofia Spagnolo; Pierpaolo Girardi
Penglei Sun; Shuyan Chen; Xiang Liu; Longhan Zhang; Huajie You; Chang Yan; Yongqi Zhang; Xiaowen Chu; Tong-yi Zhang
Lai X; Zhang X; Jiang J; Zhao X; Lin Q; Hu G; Chen H; Zhang L; Zhang HM; Xin K; Wei W; Bian H; Wang H; Shen L
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