Low Dimensional CH3NH3PbBr3 Cubes for Persistent Luminescence: Energy Variation of Electron Excitation

被引：2

作者：

Besral, N. ^{[1
]}

Paul, T. ^{[2
]}

Thakur, S. ^{[2
]}

Sarkar, S. ^{[1
]}

Sardar, K. ^{[2
]}

Chanda, K. ^{[1
]}

Das, A. ^{[1
]}

Chattopadhyay, K. K. ^{[1
,2
]}

机构：

[1] Jadavpur Univ, Dept Phys, Kolkata 700032, India

[2] Jadavpur Univ, Sch Mat Sci & Nanotechnol, Kolkata 700032, India

来源：

62ND DAE SOLID STATE PHYSICS SYMPOSIUM | 2018年 / 1942卷

关键词：

Perovskites; organic-inorganic lead halides; photon reabsorption; luminescence; PEROVSKITE; CSPBX3;

D O I：

10.1063/1.5029067

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The impact of varying electron beam voltage upon room temperature CL (cathodoluminescence) properties of crystalline organic-inorganic lead halide perovskite CH3NH3PbBr3 (Methylammonium lead tribromide) microcubes have been studied. CH3NH3PbBr3 microcubes were synthesized at room temperature by a very straight forward wet chemical route. After preliminary characterizations like XRD (X-ray diffraction), FESEM (Field emission scanning electron microscopy), UV-Vis spectroscopy, CL study at three different beam voltages i.e. 5 kV, 10 kV and 15 kV respectively was performed at room temperature. Prominent emission signals were obtained with emission peaks at 2.190 eV (FWHM 0.120 eV), 2.222 eV (FWHM 0.108 eV) and 2.242 eV (FWHM 0.095 eV) for electron beam voltages 5 kV, 10 kV and 15 kV respectively.

引用

页数：4

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