Synergistic Effects of Eu-MOF on Perovskite Solar Cells with Improved Stability

被引：172

作者：

Dou, Jie ^{[1
]}

Zhu, Cheng ^{[1
]}

Wang, Hao ^{[1
,2
]}

Han, Ying ^{[1
]}

Ma, Sai ^{[1
]}

Niu, Xiuxiu ^{[1
]}

Li, Nengxu ^{[3
]}

Shi, Congbo ^{[1
]}

Qiu, Zhiwen ^{[3
]}

Zhou, Huanping ^{[3
]}

Bai, Yang ^{[1
]}

Chen, Qi ^{[1
,2
]}

机构：

[1] Beijing Inst Technol, Sch Mat Sci & Engn, Beijing Key Lab Construct Tailorable Adv Funct Ma, Expt Ctr Adv Mat,MIIT Key Lab Low Dimens Quantum, Beijing 100081, Peoples R China

[2] Chongqing Innovat Ctr, Beijing Inst Technol, Chongqing 401120, Peoples R China

[3] Peking Univ, Dept Mat Sci & Engn, Coll Engn, Beijing 100871, Peoples R China

来源：

ADVANCED MATERIALS | 2021年 / 33卷 / 39期

基金：

中国国家自然科学基金; 中国博士后科学基金;

关键词：

Eu-MOF; perovskite solar cells; stability; synergistic effects; EFFICIENT; CRYSTALS; SENSOR; CATION;

D O I：

10.1002/adma.202102947

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Enhancing device lifetime is one of the essential challenges in perovskite solar cells. The ultrathin Eu-MOF layer is introduced at the interface between the electron-transport layer and the perovskite absorber to improve the device stability. Both Eu ions and organic ligands in the MOF can reduce the defect concentration and improve carrier transport. Moreover, due to the Forster resonance energy transfer effect, Eu-MOF in perovskite films can improve light utilization and reduce the decomposition under ultraviolet light. Meanwhile, Eu-MOF also turns tensile strain to compressive strain in the perovskite films. As a result, the corresponding devices achieve a champion power conversion efficiency (PCE) of 22.16%. In addition, the devices retain 96% of their original PCE after 2000 h under the relative humidity of 30% and 91% of their original PCE after 1200 h after continuous 85 degrees C aging condition in N-2.

引用

页数：9

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