Surface reconstruction of wide-bandgap perovskites enables efficient perovskite/silicon tandem solar cells

被引：26

作者：

Fang, Zheng ^{[1
,2
]}

Deng, Bingru ^{[2
]}

Jin, Yongbin ^{[2
]}

Yang, Liu ^{[2
]}

Chen, Lisha ^{[2
]}

Zhong, Yawen ^{[2
]}

Feng, Huiping ^{[2
]}

Yin, Yue ^{[2
]}

Liu, Kaikai ^{[2
,3
]}

Li, Yingji ^{[2
]}

Zhang, Jinyan ^{[4
]}

Huang, Jiarong ^{[4
]}

Zeng, Qinghua ^{[4
]}

Wang, Hao ^{[5
]}

Yang, Xing ^{[6
]}

Yang, Jinxin ^{[2
]}

Tian, Chengbo ^{[2
]}

Xie, Liqiang ^{[2
]}

Wei, Zhanhua ^{[2
]}

Xu, Xipeng ^{[1
]}

机构：

[1] Huaqiao Univ, Inst Mfg Engn, Coll Mech Engn & Automat, Minist Educ,Engn Res Ctr Brittle Mat Machining, Xiamen 361021, Peoples R China

[2] Huaqiao Univ, Inst Luminescent Mat & Informat Displays, Coll Mat Sci & Engn, Xiamen Key Lab Optoelect Mat & Adv Mfg, Xiamen 361021, Peoples R China

[3] Henan Univ Sci & Technol, Sch Phys & Engn, Luoyang 471023, Peoples R China

[4] Gold Stone Fujian Energy Co Ltd, Quanzhou 362005, Peoples R China

[5] Beijing Huairou Lab, Beijing 101499, Peoples R China

[6] Kunshan Shengcheng Photoelect Technol Co Ltd, Suzhou 215300, Peoples R China

来源：

NATURE COMMUNICATIONS | 2024年 / 15卷 / 01期

基金：

中国国家自然科学基金;

关键词：

HALIDE PEROVSKITES; PASSIVATION; LEAD;

D O I：

10.1038/s41467-024-54925-4

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

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.

引用

页数：11

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