Stabilizing hybrid perovskites against moisture and temperature via non-hydrolytic atomic layer deposited overlayers

被引：66

作者：

Kim, In Soo ^{[1
,2
]}

Martinson, Alex B. F. ^{[1
,2
]}

机构：

[1] Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA

[2] ANSER Ctr, Evanston, IL 60208 USA

来源：

JOURNAL OF MATERIALS CHEMISTRY A | 2015年 / 3卷 / 40期

关键词：

SOLAR-CELLS; PHASE-TRANSITIONS; COLLECTION LAYER; HIGH-PERFORMANCE; THIN-FILMS; MOBILITIES; EFFICIENT; LENGTHS; ROUTES;

D O I：

10.1039/c5ta07186k

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：

A novel non-hydrolytic (nh) surface chemistry is utilized to allow the direct synthesis of pinhole-fee oxide overlayers directly on conventional hybrid perovskite halide absorbers without damage. Utilizing water-free ALD Al2O3 passivation, a minimum of ten-fold increase in stability against relative humidity (RH) 85% was achieved along with a dramatically improved thermal resistance (up to 250 degrees C). Moreover, we extend this approach to synthesize nh-TiO2 directly on hybrid perovskites to establish its potential in inverted photovoltaic devices as a dual stabilizing and electron accepting layer, as evidenced by photoluminescence (PL) quenching.

引用

页码：20092 / 20096

页数：5

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