a Institute of Optoelectronic Technology,Beijing Jiaotong University, Beijing 100044, Chinab Key Laboratory of Luminescence and Optical Information, Ministry of Education, Beijing 100044, China; c Departamento de Fisica, Instituto Superior de Engenharia do Porto, 4200-072 Porto, Portugal
Abstract Absorption is the origin of luminescence. But it must be noticed that the lifetime of luminescence might reversely influence the rate of absorption. In this paper, it is reported that the luminescence intensity of copper and manganese changes with the driving frequency at constant voltage.The variation of luminescent intensity depends only on the lifetime of luminescence but not on the type of quenching or other factors. Generally the rate of absorption is dominantly determined by the material property and the lifetime of luminescence centres, the absorption of shorter lifetime centre will be larger than that of the longer lifetime centre at the same excited condition.
Received: 02 August 2005
Revised: 06 September 2005
Accepted manuscript online:
Fund: 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 Foundation of Beijing Jiaotong University (48011) and Beijing Jiaotong University Paper Foundation (PD296).
Cite this article:
Zhang Fu-Jun (张福俊), Xu Zheng (徐征), Zhao Su-Ling (赵谡玲), Lou Zhi-Dong (娄志东), Yang Sheng-Yi (杨盛谊), Xu Xu-Rong (徐叙瑢) Estimation of luminescence lifetime in frequency domain 2006 Chinese Physics 15 526
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