PHOTOLUMINESCENCE AND STIMULATED EMISSION IN CdS CRYSTAL AT DIFFERENT EXCITATION DENSITY

Zheng Zhuhong; Fan Xiwu(X. W. Fan); Yang Aihua

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PHOTOLUMINESCENCE AND STIMULATED EMISSION IN CdS CRYSTAL AT DIFFERENT EXCITATION DENSITY

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- PHOTOLUMINESCENCE AND STIMULATED EMISSION IN CdS CRYSTAL AT DIFFERENT EXCITATION DENSITY
- Chinese Journal of Luminescence Vol. 12, Issue 1, Pages: 26-33(1991)
- 作者机构：
  
  中国科学院长春物理研究所
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Received：05 July 1990，
  
  Published：28 February 1991
- 稿件说明：
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郑著宏, 范希武, 杨爱华. 不同激发密度下CdS晶体的光致发光和受激发射[J]. 发光学报, 1991,12(1): 26-33

Zheng Zhuhong, Fan Xiwu(X. W. Fan), Yang Aihua. PHOTOLUMINESCENCE AND STIMULATED EMISSION IN CdS CRYSTAL AT DIFFERENT EXCITATION DENSITY[J]. Chinese Journal of Luminescence, 1991,12(1): 26-33
郑著宏, 范希武, 杨爱华. 不同激发密度下CdS晶体的光致发光和受激发射[J]. 发光学报, 1991,12(1): 26-33 DOI：

Zheng Zhuhong, Fan Xiwu(X. W. Fan), Yang Aihua. PHOTOLUMINESCENCE AND STIMULATED EMISSION IN CdS CRYSTAL AT DIFFERENT EXCITATION DENSITY[J]. Chinese Journal of Luminescence, 1991,12(1): 26-33 DOI：

摘要

本文主要研究在77-111K温度范围内、不同激发密度的N

激光器的337.1nm谱线激发下

激子-激子(E

-E

)、激子-载流子(E

-e)的相互作用和发射一个LO声子(Ex-1LO)、两个LO声子(E

-2LO)的自由激子的辐射复合行为.并在77K温度下观测到由E

-E

发射产生的受激发射.

Abstract

The research work on the photoemission in CdS crystal was mostly limited in the behavior of bound exciton

excitonic molecule and exciton-exciton (E

-E

) interaction at rather lower temperature

[1-3]

. Saito et al.

[3]

studied the emission of the near-band edge in CdS within 8-65K. We have investigated exciton-carrier (E

-e) interaction and the annihilation of a free exciton with emission of a photon and one-LO or two-LO phonons utilizing the photo luminescence (PL) and electroluminescence (EL)

[5]

. Up to now

there has been no report on E

-E

interaction in CdS crystal at the temperature higher than 80K.This paper mainly studies the behavior of E

-E

-e

-1LO and E

-2LO interaction and the stimulated emission due to E

-E

interaction in CdS.The CdS crystal used in this experiment was grown by sublimation method in our laboratory.The PL spectra were measured by Model 44W spectrometer with a RCA C31034 photomultiplier at the excitation of 337.1nm line of a N

laser in the temperature range of 77K-RT.Fig.

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