中国物理B ›› 2007, Vol. 16 ›› Issue (5): 1464-1466.doi: 10.1088/1009-1963/16/5/049

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Transient demonstration of exciton behaviours in solid state cathodoluminescence under different driving voltage

赵谡玲1, 徐征1, 黄金昭1, 徐叙瑢1, 张福俊2   

  1. (1)Institute of Optoelectronic Technology, Key Laboratory of Luminescence and Optical Information,\\ Beijing Jiaotong University, Beijing 100044, China; (2)Institute of Optoelectronic Technology, Key Laboratory of Luminescence and Optical Information,\\ Beijing Jiaotong University, Beijing 100044, China;Institute of Physics, Humboldt University, Berlin 12489, Germany
  • 收稿日期:2006-09-11 修回日期:2006-11-06 出版日期:2007-05-20 发布日期:2007-05-20
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos 10374001, 10434030 and 60576016), State Key Development Program for Basic Research of China (Grant No 2003CB314707), the Excellent Doctor's Science and Technology Innovation

Transient demonstration of exciton behaviours in solid state cathodoluminescence under different driving voltage

Zhang Fu-Jun(张福俊)a)b)†, Zhao Su-Ling(赵谡玲)a), Xu Zheng(徐征)a)‡, Huang Jin-Zhao(黄金昭)a), and Xu Xu-Rong(徐叙瑢)a)   

  1. a Institute of Optoelectronic Technology, Key Laboratory of Luminescence and Optical Information,  Beijing Jiaotong University, Beijing 100044, China; b Institute of Physics, Humboldt University, Berlin 12489, Germany
  • Received:2006-09-11 Revised:2006-11-06 Online:2007-05-20 Published:2007-05-20
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos 10374001, 10434030 and 60576016), State Key Development Program for Basic Research of China (Grant No 2003CB314707), the Excellent Doctor's Science and Technology Innovation

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摘要： In the solid state cathodoluminescence (SSCL), organic materials were excited by hot electrons accelerated in silicon oxide (SiO2) layer under alternating current (AC). In this paper exciton behaviours were analysed by using transient spectra under different driving voltages. The threshold voltages of SSCL and exciton ionization were obtained from the transient spectra. The recombination radiation occurred when the driving voltage went beyond the threshold voltage of exciton ionization. From the transient spectrum of two kinds of luminescence (exciton emission and recombination radiation), it was demonstrated that recombination radiation should benefit from the exciton ionization.

关键词: electroluminescence, ionization

Abstract: In the solid state cathodoluminescence (SSCL), organic materials were excited by hot electrons accelerated in silicon oxide (SiO2) layer under alternating current (AC). In this paper exciton behaviours were analysed by using transient spectra under different driving voltages. The threshold voltages of SSCL and exciton ionization were obtained from the transient spectra. The recombination radiation occurred when the driving voltage went beyond the threshold voltage of exciton ionization. From the transient spectrum of two kinds of luminescence (exciton emission and recombination radiation), it was demonstrated that recombination radiation should benefit from the exciton ionization.

Key words: electroluminescence, ionization

中图分类号:  (Cathodoluminescence, ionoluminescence)

  • 78.60.Hk
71.35.-y (Excitons and related phenomena)