Optical constants of CH3NH3PbBr3 perovskite thin films measured by spectroscopic ellipsometry

被引：106

作者：

Alias, Mohd Sharizal ^{[1
]}

Dursun, Ibrahim ^{[2
]}

Saidaminov, Makhsud I. ^{[2
]}

Diallo, Elhadj Marwane ^{[3
]}

Mishra, Pawan ^{[1
]}

Ng, Tien Khee ^{[1
]}

Bakr, Osman M. ^{[3
]}

Ooi, Boon S. ^{[1
]}

机构：

[1] KAUST, Photon Lab, CEMSE, Thuwal 239556900, Saudi Arabia

[2] KAUST, SPERC, Thuwal 239556900, Saudi Arabia

[3] KAUST, Adv Nanofabricat Core Lab, Thuwal 239556900, Saudi Arabia

来源：

OPTICS EXPRESS | 2016年 / 24卷 / 15期

关键词：

HALIDE PEROVSKITES; SOLAR-CELLS; ELECTRONIC-STRUCTURE; EFFICIENT; PERFORMANCE; CRYSTALS;

D O I：

10.1364/OE.24.016586

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The lack of optical constants information for hybrid perovskite of CH3NH3PbBr3 in thin films form can delay the progress of efficient LED or laser demonstration. Here, we report on the optical constants (complex refractive index and dielectric function) of CH3NH3PbBr3 perovskite thin films using spectroscopic ellipsometry. Due to the existence of voids, the refractive index of the thin films is around 8% less than the single crystals counterpart. The energy bandgap is around 2.309 eV as obtained from photoluminescence and spectrophotometry spectra, and calculated from the SE analysis. The precise measurement of optical constants will be useful in designing optical devices using CH3NH3PbBr3 thin films. (C) 2016 Optical Society of America

引用

页码：16586 / 16594

页数：9

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