Stabilizing efficient wide-bandgap perovskite in perovskite-organic tandem solar cells

被引：37

作者：

Guo, Xiao ^{[1
,2
]}

Jia, Zhenrong ^{[1
,2
]}

Liu, Shunchang ^{[1
,2
]}

Guo, Renjun ^{[2
]}

Jiang, Fangyuan ^{[3
]}

Shi, Yangwei ^{[4
,5
]}

Dong, Zijing ^{[1
,2
]}

Luo, Ran ^{[1
,2
]}

Wang, Yu-Duan ^{[1
,2
]}

Shi, Zhuojie ^{[1
,2
]}

Li, Jia ^{[2
]}

Chen, Jinxi ^{[1
,2
]}

Lee, Ling Kai ^{[2
]}

Mueller-Buschbaum, Peter ^{[5
,6
]}

Ginger, David S. ^{[3
,7
]}

Paterson, David J. ^{[8
]}

Hou, Yi ^{[1
,2
]}

机构：

[1] Natl Univ Singapore, Dept Chem & Biomol Engn, Singapore 117585, Singapore

[2] Natl Univ Singapore, Solar Energy Res Inst Singapore SERIS, Singapore 117574, Singapore

[3] Univ Washington, Dept Chem, Seattle, WA 98195 USA

[4] Univ Washington, Mol Engn & Sci Inst, Seattle, WA 98195 USA

[5] Tech Univ Munich, TUM Sch Nat Sci, Dept Phys, Chair Funct Mat, James Franck Str 1, D-85748 Garching, Germany

[6] Tech Univ Munich, Heinz Maier Leibnitz Zent MLZ, Lichtenbergstr 1, D-85748 Garching, Germany

[7] Pacific Northwest Natl Lab, Phys & Computat Sci Directorate, Phys Sci Div, Richland, WA 99352 USA

[8] Australian Synchrotron ANSTO, Clayton, VIC 3168, Australia

来源：

JOULE | 2024年 / 8卷 / 09期

基金：

新加坡国家研究基金会;

关键词：

PHOTOINDUCED HALIDE SEGREGATION; SUPPRESSED PHASE SEGREGATION; LENGTHS;

D O I：

10.1016/j.joule.2024.06.009

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Iodide and bromide integration facilitate bandgap tunability in wide-bandgap perovskites, yet high concentrations of bromide lead to halide phase segregation, adversely affecting the efficiency and stability of solar cell devices. In this work, 2-amino-4,5-imidazoledicarbonitrile (AIDCN), with highly polarized charge distribution and compact molecular configuration, is incorporated into a 1.86 eV wide-bandgap perovskite to effectively suppress photoinduced iodine escape and phase segregation. Hyperspectral photoluminescence microscopy reveals that AIDCN mitigates phase segregation under continuous laser exposure. Concurrent in situ grazing-incidence wide-angle X-ray scattering and X-ray fluorescence measurements further validate suppressed iodine escape, evidenced by a notable slowing down of lattice shrinkage and a well-maintained overall chemical composition of the perovskite under continuous illumination. Applying this approach, we achieve a power conversion efficiency (PCE) of 18.52% in 1.86 eV wide-bandgap perovskite solar cells. By integrating this perovskite subcell with the PM6:BTP-eC9 organic subcell, the tandem attains a maximum PCE of 25.13%, with a certified stabilized PCE of 23.40%.

引用

页码：2554 / 2569

页数：17

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