3,5-Difluorophenylboronic acid-modified SnO2 as ETLs for perovskite solar cells: PCE > 22.3%, T82 > 3000 h

被引：34

作者：

Zhang, Jiajia ^{[1
]}

Fu, Jianfei ^{[1
]}

Chen, Qiaoyun ^{[1
]}

Ma, Hui ^{[1
]}

Jiang, Zhixuan ^{[1
]}

Zhang, Zelong ^{[1
]}

Zhou, Yi ^{[1
]}

Song, Bo ^{[1
]}

机构：

[1] Soochow Univ, Coll Chem Chem Engn & Mat Sci, Suzhou Key Lab Novel Semicond Optoelect Mat & Dev, Lab Adv Optoelect Mat, Suzhou 215123, Peoples R China

来源：

CHEMICAL ENGINEERING JOURNAL | 2022年 / 433卷

基金：

中国国家自然科学基金;

关键词：

Perovskite solar cells; 3,5-Difluorophenylboronic acid; SnO2; Electron transport layer; EFFICIENT; ELECTRON; LAYER; PERFORMANCE;

D O I：

10.1016/j.cej.2021.133744

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

SnO2 has recently emerged as a promising Electron transportation layer (ETL) for perovskite solar cells (PeroSCs). However, its inherent trap-states usually cause charge recombination, and its conductive band does not match well with that of the perovskite film. In order to solve these problems, we herein employed 3,5-Difluorophenylboronic acid (denoted by FPBA) to modify SnO2. After modification, the trap state density of SnO2 is drastically reduced, and better energy-level alignment is formed with perovskite owing to the interfacial dipole of FPBA. Consequently, the champion Power conversion efficiency (PCE) of Pero-SCs is increased from 20.38% to 22.36% after SnO2 being modified with FPBA. Moreover, the unencapsulated device based on FPBA-modified SnO2 maintains 82% of the initial PCE after being stored in nitrogen atmosphere for more than 3000 h.

引用

页数：10

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3,5-Difluorophenylboronic acid-modified SnO2 as ETLs for perovskite solar cells: PCE &gt; 22.3%, T82 &gt; 3000 h

3,5-Difluorophenylboronic acid-modified SnO2 as ETLs for perovskite solar cells: PCE > 22.3%, T82 > 3000 h