Highly stable inverted methylammonium lead tri-iodide perovskite solar cells achieved by surface re-crystallization

被引：47

作者：

Back, Hyungcheol ^{[1
,2
,3
]}

Kim, Geunjin ^{[1
,2
,4
]}

Kim, Heejoo ^{[1
,2
,5
]}

Nam, Chang-Yong ^{[6
]}

Kim, Jinhyun ^{[7
]}

Kim, Yong Ryun ^{[1
,2
]}

Kim, Taejin ^{[8
]}

Park, Byoungwook ^{[9
]}

Durrant, James R. ^{[7
]}

Lee, Kwanghee ^{[1
,2
,9
]}

机构：

[1] Gwangju Inst Sci & Technol, Heeger Ctr Adv Mat, Gwangju 61005, South Korea

[2] Gwangju Inst Sci & Technol, Res Inst Solar & Sustainable Energies, Gwangju 61005, South Korea

[3] Hanwha Solut, 305 Pangyo M, Seongnam 13488, Gyeonggi, South Korea

[4] Korea Res Inst Chem Technol, Div Adv Mat, 141 Gajeong Ro, Daejeon 34114, South Korea

[5] Gwangju Inst Sci & Technol, Inst Integrated Technol, Gwangju 61005, South Korea

[6] Brookhaven Natl Lab, Ctr Funct Nanomat, Upton, NY 11973 USA

[7] Imperial Coll London, Dept Chem & Ctr Plast Elect, London SW7 2AZ, England

[8] SUNY Stony Brook, Dept Mat Sci & Chem Engn, Stony Brook, NY 11794 USA

[9] Gwangju Inst Sci & Technol, Sch Mat Sci & Engn, Gwangju 61005, South Korea

来源：

ENERGY & ENVIRONMENTAL SCIENCE | 2020年 / 13卷 / 03期

基金：

新加坡国家研究基金会;

关键词：

LENGTHS; EFFICIENT; CATIONS;

D O I：

10.1039/c9ee03736e

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Despite the promise of simple manufacturing via an entirely solution-based process at low temperature (<100 degrees C), the planar-type inverted perovskite solar cells (PeSCs) based on methylammonium lead tri-iodide (MAPbI(3)) still suffer from a notorious instability problem under operational conditions. Here, we found that the operational stability of PeSCs with MAPbI(3) is significantly related to a high density of ionic defects and correlated amorphous regions at the interface between the electron transport layer and the MAPbI(3) film. By recrystallizing the surface of the MAPbI(3) layer, we fabricate defect-free stoichiometric MAPbI(3) crystals and demonstrated burn-in loss-free and intrinsically stable inverted MAPbI(3) PeSCs. The inverted MAPbI(3) PeSCs exhibited a power conversion efficiency (PCE) of 18.8% and maintained over 80% and 90% of their initial PCEs even after 1000 hours of real operation (under AM 1.5G irradiation) and continuous heating conditions (at 85 degrees C in the dark), respectively. Our work demonstrates that the MAPbI(3) layer under ionic defect-free conditions is 'intrinsically' stable under operational conditions.

引用

页码：840 / 847

页数：8

共 41 条

[1] Understanding Detrimental and Beneficial Grain Boundary Effects in Halide Perovskites [J].