Cathodoluminescence of Self-Organized Heterogeneous Phases in Multidimensional Perovskite Thin Films

被引：29

作者：

Cortecchia, Daniele ^{[1
,2
]}

Lew, Kar Cheng ^{[3
,4
]}

So, Jin-Kyu ^{[4
]}

Bruno, Annalisa ^{[2
]}

Soci, Cesare ^{[3
,4
]}

机构：

[1] Nanyang Technol Univ, Interdisciplinary Grad Sch, Singapore 639798, Singapore

[2] Nanyang Technol Univ, ERI N, 50 Nanyang Dr, Singapore 637553, Singapore

[3] Nanyang Technol Univ, Sch Phys & Math Sci, Div Phys & Appl Phys, 21 Nanyang Link, Singapore 637371, Singapore

[4] Nanyang Technol Univ, TPI, Ctr Disrupt Photon Technol, Singapore 637371, Singapore

来源：

CHEMISTRY OF MATERIALS | 2017年 / 29卷 / 23期

基金：

新加坡国家研究基金会;

关键词：

HALIDE PEROVSKITES; SOLAR-CELLS; CARRIER DYNAMICS; LIGHT; EFFICIENCY; EMISSION; PHOTOLUMINESCENCE; NANOSTRUCTURES;

D O I：

10.1021/acs.chemmater.7b03851

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：

Multidimensional hybrid perovskites are becoming increasingly important for photovoltaic and light-emitting applications because of their improved moisture stability, unique luminescence, and transport properties. Little is known, however, about the phase distribution and self-organization properties of multidimensional perovskite thin films. In this work, we combine steady-state and time resolved cathodoluminescence microscopy with photoluminescence techniques and reveal with unprecedented resolution the characteristic self-assembly of heterogeneous phases of perovskites with different dimensionality, driven by uneven redistribution of methylammonium cations during film formation. Our findings provide fundamental insights for the rational design of complex multidimensional perovskite systems with improved stability and emissive properties.

引用

页码：10088 / 10094

页数：7

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