Inverted Wide-Bandgap 2D/3D Perovskite Solar Cells with >22% Efficiency and Low Voltage Loss

被引：39
|
作者：
Song, Zonglong [1 ,2 ,3 ]
Yang, Jing [4 ]
Dong, Xiyue [1 ,2 ,3 ]
Wang, Rui [1 ,2 ,3 ]
Dong, Yixin [4 ]
Liu, Dongxue [4 ]
Liu, Yongsheng [1 ,2 ,3 ,5 ]
机构：
[1] Nankai Univ, Ctr Nanoscale Sci & Technol, Tianjin 300071, Peoples R China
[2] Nankai Univ, Inst Polymer Chem, Coll Chem, Key Lab Funct Polymer Mat, Tianjin 300071, Peoples R China
[3] Nankai Univ, Renewable Energy Convers & Storage Ctr RECAST, Tianjin 300071, Peoples R China
[4] China Three Gorges Corp, Renewable Energy & New Power Syst Engn Res Ctr, Beijing 100038, Peoples R China
[5] Haihe Lab Sustainable Chem Transformat, Tianjin 300192, Peoples R China
来源：
NANO LETTERS | 2023年 / 23卷 / 14期
基金：
中国国家自然科学基金;
关键词：
wide-bandgap perovskite; 2D; 3D perovskite; inverted device; stability; charge transport; FORMAMIDINIUM; PERFORMANCE;
D O I：
10.1021/acs.nanolett.3c01962
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Wide-bandgapperovskites play a key role in high-performancetandemsolar cells, which have the potential to break the Schockley-Queisserlimit. Here, a 2D/3D hybrid wide-bandgap perovskite was developedusing octane-1,8-diaminium (ODA) as spacer. The incorporation of theODA spacer can not only significantly reduce charge carrier nonradiativerecombination loss but also inhibit phase separation. Moreover, witha synergy effect using butylammonium iodide (BAI) as a surface defectpassivator, both the phase stability and device performance were furtherimproved. Compared to the control inverted device with a V (OC) of 1.16 V and a PCE of 18.50%, the optimized PSCs basedon a surface processed 2D/3D perovskite exhibit a superior high V (OC) of 1.26 V and a champion PCE of 22.19%, whichis a record efficiency for wide-bandgap PSCs (E (g) > 1.65 eV). This work provides a very effective strategyto suppress phase separation in wide-bandgap perovskites for highlyefficient and stable solar cells.
引用
收藏
页码：6705 / 6712
页数：8
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