Amidino-based Dion-Jacobson 2D perovskite for efficient and stable 2D/3D heterostructure perovskite solar cells

被引：144

作者：

Yang, Tinghuan ^{[1
]}

Ma, Chuang ^{[1
]}

Cai, Weilun ^{[1
]}

Wang, Shiqiang ^{[1
]}

Wu, Yin ^{[1
]}

Feng, Jiangshan ^{[1
]}

Wu, Nan ^{[1
]}

Li, Haojin ^{[1
]}

Huang, Wenliang ^{[1
]}

Ding, Zicheng ^{[1
]}

Gao, Lili ^{[1
]}

Liu, Shengzhong ^{[1
,2
]}

Zhao, Kui ^{[1
]}

机构：

[1] Shaanxi Normal Univ, Key Lab Appl Surface & Colloid Chem, Minist Educ, Shaanxi Key Lab Adv Energy Devices,Shaanxi Engn La, Xian 710119, Shaanxi, Peoples R China

[2] Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy, iChEM, Dalian 116023, Liaoning, Peoples R China

来源：

JOULE | 2023年 / 7卷 / 03期

基金：

中国国家自然科学基金;

关键词：

FORMAMIDINIUM; STABILITY; IMPROVES;

D O I：

10.1016/j.joule.2023.02.003

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：

In metal halide perovskite solar cells the formation of a 2D/3D bulk heterostructure has a positive effect on device stability but can be detrimental to charge transport and power conversion efficiency (PCE). Herein, we report that amidino-based Dion-Jacobson 2D perovskite enables the creation of an efficient and stable FAPbI3- based 2D/3D heterostructure in perovskite solar cells. The 2D-perovskite-assisted nucleation/growth of 3D perovskites during film formation was found by using time-resolved optical diagnostics, which decrease concentrations of voids and bulk defects of perov-skite films for efficient charge transport. The planar perovskite solar cells based on 2D/3D heterostructures achieved efficiencies of 24.9% and 22.3% on rigid and flexible substrates, respectively, which are the highest efficiencies among all 2D/3D composite solar cells. Improved stability was further demonstrated, with 97% of orig-inal efficiency retained for rigid solar cells without encapsulation af-ter 1,000 h of storage under ambient conditions (RH 30%-40%) and 92% for flexible solar cells after 3,000 bending cycles.

引用

页码：574 / 586

页数：14

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