中国物理B ›› 2013, Vol. 22 ›› Issue (11): 113301-113301.doi: 10.1088/1674-1056/22/11/113301

• ATOMIC AND MOLECULAR PHYSICS • 上一篇    下一篇

Quantitative analysis of the self-absorption and reemission effects on the emission spectrum of photoluminescence in right-angle excitation–detection configuration

王振华, 吴玉娥, 张心正, 云志强, 李威, 许京军   

  1. The Key Laboratory of Weak-Light Nonlinear Photonics, Ministry of Education, TEDA Applied Physics School and School of Physics, Nankai University, Tianjin 300457, China
  • 收稿日期:2013-02-27 修回日期:2013-06-09 出版日期:2013-09-28 发布日期:2013-09-28
  • 基金资助:
    Project supported by the National Basic Research Program of China (Grant No. 2010CB934101), the National Natural Science Foundation of China (Grant No. 11174161), and the International S&T Cooperation Program of China (Grant No. 2011DFA52870).

Quantitative analysis of the self-absorption and reemission effects on the emission spectrum of photoluminescence in right-angle excitation–detection configuration

Wang Zhen-Hua (王振华), Wu Yu-E (吴玉娥), Zhang Xin-Zheng (张心正), Yun Zhi-Qiang (云志强), Li Wei (李威), Xu Jing-Jun (许京军)   

  1. The Key Laboratory of Weak-Light Nonlinear Photonics, Ministry of Education, TEDA Applied Physics School and School of Physics, Nankai University, Tianjin 300457, China
  • Received:2013-02-27 Revised:2013-06-09 Online:2013-09-28 Published:2013-09-28
  • Contact: Zhang Xin-Zheng E-mail:zxz@nankai.edu.cn
  • Supported by:
    Project supported by the National Basic Research Program of China (Grant No. 2010CB934101), the National Natural Science Foundation of China (Grant No. 11174161), and the International S&T Cooperation Program of China (Grant No. 2011DFA52870).

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摘要： A theoretical approach based on differential radiative transport is proposed to quantitatively analyze the self-absorption and reemission effects on the emission spectrum for right angle excitation–detection photoluminescence measurements, and the wavelength dependence of the reemission effect is taken into account. Simulations and experiments are performed using rhodamine 6G solutions in ethanol as model samples. It is shown that the self-absorption effect is the dominant effect on the detected spectrum by inducing pseudo red-shift and reducing total intensity; whereas the reemission effect partly compensates for signal decrease and also results in an apparent signal gain at the wavelengths without absorption. Both effects decrease with the decrease in the sample concentration and the propagation distance of the emission light inside the sample. We therefore suggest that diluted solutions are required for accurate photoluminescence spectrum measurements and photoluminescence-based measurements.

关键词: photoluminescence, self-absorption effect, reemission effect, radiative transport

Abstract: A theoretical approach based on differential radiative transport is proposed to quantitatively analyze the self-absorption and reemission effects on the emission spectrum for right angle excitation–detection photoluminescence measurements, and the wavelength dependence of the reemission effect is taken into account. Simulations and experiments are performed using rhodamine 6G solutions in ethanol as model samples. It is shown that the self-absorption effect is the dominant effect on the detected spectrum by inducing pseudo red-shift and reducing total intensity; whereas the reemission effect partly compensates for signal decrease and also results in an apparent signal gain at the wavelengths without absorption. Both effects decrease with the decrease in the sample concentration and the propagation distance of the emission light inside the sample. We therefore suggest that diluted solutions are required for accurate photoluminescence spectrum measurements and photoluminescence-based measurements.

Key words: photoluminescence, self-absorption effect, reemission effect, radiative transport

中图分类号:  (Line and band widths, shapes, and shifts)

  • 33.70.Jg
33.50.Dq (Fluorescence and phosphorescence spectra)