Characterization of an abnormal photoluminescence behavior upon crystal-phase transition of perovskite CH3NH3PbI3

被引：232

作者：

Kong, Weiguang ^{[1
,2
]}

Ye, Zhenyu ^{[1
,2
]}

Qi, Zhen ^{[3
]}

Zhang, Bingpo ^{[1
,2
]}

Wang, Miao ^{[1
,2
]}

Rahimi-Iman, Arash ^{[4
,5
]}

Wu, Huizhen ^{[1
,2
]}

机构：

[1] Zhejiang Univ, Dept Phys, Hangzhou 310027, Zhejiang, Peoples R China

[2] Zhejiang Univ, State Key Lab Silicon Mat, Hangzhou 310027, Zhejiang, Peoples R China

[3] Chinese Acad Sci, Shanghai Inst Tech Phys, State Key Lab Infrared Phys, Shanghai 200083, Peoples R China

[4] Univ Marburg, Fac Phys, D-35032 Marburg, Germany

[5] Univ Marburg, Ctr Mat Sci, D-35032 Marburg, Germany

来源：

PHYSICAL CHEMISTRY CHEMICAL PHYSICS | 2015年 / 17卷 / 25期

基金：

中国国家自然科学基金;

关键词：

HETEROJUNCTION SOLAR-CELLS; EFFICIENCY; ELECTRON; CARBON;

D O I：

10.1039/c5cp02605a

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：

Solution-processed hybrid perovskite of CH3NH3PbI3 (MAPbI(3)) exhibits an abnormal luminescence behavior at around the tetragonal-orthorhombic phase transition temperature. The combination of time resolved photoluminescence (PL), variable excitation power PL, and variable-temperature X-ray diffraction (XRD) allows us to clearly interpret the abnormal luminescence features in the phase transition region of MAPbI(3). Both PL and XRD results unambiguously prove the coexistence of the tetragonal and orthorhombic phases of MAPbI(3) in the temperature range of 150 to 130 K. The two luminescence features observed in the orthorhombic phase at T < 130 K originate from free excitons and donor-acceptor-pair (DAP) transitions, respectively. The comprehensive understanding of optical properties upon phase transition in MAPbI(3) will benefit the development of new optoelectronic devices.

引用

页码：16405 / 16411

页数：7

共 37 条

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