Substrate effects on photoluminescence and low temperature phase transition of methylammonium lead iodide hybrid perovskite thin films

被引：16

作者：

Shojaee, S. A. ^{[1
]}

Harriman, T. A. ^{[1
]}

Han, G. S. ^{[2
]}

Lee, J. -K. ^{[2
]}

Lucca, D. A. ^{[1
]}

机构：

[1] Oklahoma State Univ, Sch Mech & Aerosp Engn, Stillwater, OK 74078 USA

[2] Univ Pittsburgh, Dept Mech Engn & Mat Sci, Pittsburgh, PA 15261 USA

来源：

APPLIED PHYSICS LETTERS | 2017年 / 111卷 / 02期

关键词：

HALIDE PEROVSKITES; SOLAR-CELLS; CH3NH3PBI3; STRAIN; BEHAVIOR; ORIGIN;

D O I：

10.1063/1.4993761

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We examine the effects of substrates on the low temperature photoluminescence (PL) spectra and phase transition in methylammonium lead iodide hybrid perovskite (CH3NH3PbI3) thin films. Structural characterization at room temperature with X-ray diffraction (XRD), scanning electron microscopy (SEM), and Raman spectroscopy indicated that while the chemical structure of films deposited on glass and quartz was similar, the glass substrate induced strain in the perovskite films and suppressed the grain growth. The luminescence response and phase transition of the perovskite thin films were studied by PL spectroscopy. The induced strain was found to affect both the room temperature and low temperature PL spectra of the hybrid perovskite films. In addition, it was found that the effects of the glass substrate inhibited a tetragonal to orthorhombic phase transition such that it occurred at lower temperatures. Published by AIP Publishing.

引用

页数：5

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