TIME-RESOLVED PHOTOLUMINESCENCE OF SINTERED ZnO CERAMICS

• 来源期刊: 中国物理(英文版)
• 学科: 物理学
• 关键词: time-resolved photoluminescence sintered ZnO ceramics
• 年，卷（期）: 2001,（9）
• 所属期刊栏目: CONDENSED MATTER:STRUCTURE,THERMAL AND MECHANICAL
• 页码范围: 874-876
• 页数: 3页
• 分类号: O4
• 语种: 英文

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 photolurninescence decay behaviour can be depicted as t-π(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.