Surfactant assisted control on optical, fluorescence and phonon lifetime in α-Bi2O3 microrods

被引：19
|
作者：
Hariharan, S. [1 ]
Udayabhaskar, R. [1 ]
Ravindran, T. R. [2 ]
Karthikeyan, B. [1 ]
机构：
[1] Natl Inst Technol, Dept Phys, Tiruchirappalli 620015, Tamil Nadu, India
[2] Indira Gandhi Ctr Atom Res, Kalpakkam 603102, Tamil Nadu, India
来源：
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY | 2016年 / 163卷
关键词：
Fluorescence properties; Surface defects; Phonon lifetime; LUMINESCENCE;
D O I：
10.1016/j.saa.2016.02.045
中图分类号：
O433 [光谱学];
学科分类号：
0703 ; 070302 ;
摘要：
We report preparation of pure and surfactant added alpha-Bi2O3 microrods through simple chemical method at moderate temperature. Cetyltrimethyl ammonium bromide (CTAB) is used as a surfactant. X-ray diffraction (XRD), scanning electron microscopy (SEM), Fourier Transform Infrared (FTIR) spectroscopy, Raman spectroscopy, UV-Vis absorption and photoluminescence (PL) measurements were carried out to understand the effect of surfactant (CTAB) on structural, phonon and optical properties of the prepared material. It is observed that the crystallite size, optical band gap and the structural defects (oxygen vacancies) decreases due to the effect of surfactant. Raman spectral studies exhibit various phonon modes of Bi2O3 and also decrease in the FWHM of the phonon modes is observed after the addition of CTAB. (C) 2016 Elsevier B.V. All rights reserved.
引用
收藏
页码：13 / 19
页数：7
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