中国物理B ›› 2001, Vol. 10 ›› Issue (9): 874-876.doi: 10.1088/1009-1963/10/9/320

• • 上一篇    

TIME-RESOLVED PHOTOLUMINESCENCE OF SINTERED ZnO CERAMICS

N. Ohno1, 张中明2, 文小明3   

  1. (1)Academic Frontier Promotion Center, Osaka Electro-Communication University, Neyagawa, Osaka 572-8530, Japan; (2)Department of Physics, Yunnan University, Kunming 650091, China; (3)Department of Physics, Yunnan University, Kunming 650091, China; Academic Frontier Promotion Center, Osaka Electro-Communication University, Neyagawa, Osaka 572-8530, Japan
  • 收稿日期:2001-03-07 修回日期:2001-05-20 出版日期:2001-09-15 发布日期:2005-06-12
  • 基金资助:
    Project supported by the Natural Science Foundation of Yunnan Province, China (Grant Nos. 98A011M and 98A002G).

TIME-RESOLVED PHOTOLUMINESCENCE OF SINTERED ZnO CERAMICS

Wen Xiao-ming (文小明)ab, N. Ohnob, Zhang Zhong-ming (张中明)a    

  1. a Department of Physics, Yunnan University, Kunming 650091, China; b Academic Frontier Promotion Center, Osaka Electro-Communication University, Neyagawa, Osaka 572-8530, Japan
  • Received:2001-03-07 Revised:2001-05-20 Online:2001-09-15 Published:2005-06-12
  • Supported by:
    Project supported by the Natural Science Foundation of Yunnan Province, China (Grant Nos. 98A011M and 98A002G).

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摘要： The time-resolved photoluminescence (TRPL) of sintered ZnO ceramics was measured at low temperatures. A broad luminescence band was observed in the visible region. The TRPL experiment shows that photoluminescence decay behaviour can be depicted as t-n(r). The decay rate n(r) and lifetime are wavelength dependent, and the former varies exponentially with wavelength. The power-lowering behaviour of the luminescence intensity indicates that the luminescence band originates from the recombination of donor-acceptor pairs.

Abstract: The time-resolved photoluminescence (TRPL) of sintered ZnO ceramics was measured at low temperatures. A broad luminescence band was observed in the visible region. The TRPL experiment shows that photoluminescence decay behaviour can be depicted as t-n(r). The decay rate n(r) and lifetime are wavelength dependent, and the former varies exponentially with wavelength. The power-lowering behaviour of the luminescence intensity indicates that the luminescence band originates from the recombination of donor-acceptor pairs.

Key words: time-resolved photoluminescence, sintered ZnO ceramics

中图分类号:  (Other solid inorganic materials)

  • 78.55.Hx
78.47.-p (Spectroscopy of solid state dynamics)