Estimation of the average junction temperature of two phosphors-converted white LED array based on (B plus Y plus R)/B ratio
文献类型：期刊论文
| 作者 | Ke, H. L.; L. Jing; J. Hao; Q. Gao; Y. Wanga; X. X. Wang; Q. Sun and Z. J. Xu |
| 刊名 | Solid-State Electronics
 |
| 出版日期 | 2016 |
| 卷号 | 121 |
| 英文摘要 | An accelerated aging test is the main method in evaluation of the reliability of light-emitting diodes (LEDs), and the first goal of this study is to investigate how the junction temperature (Tj) of the LED varies during accelerated aging. The Tj measured by the forward voltage method shows an upward trend over the aging time, which gives a variation about 6 degrees C-8 degrees C after 3,000 h of aging under an ambient temperature of 80 degrees C. The second goal is to investigate how the variation of Tj affects the lifetime estimation. It is verified that at a certain aging stage, as Tj increases, the normalized luminous flux linearly decreases with variation rate of microns (mu) (1/degrees C). Then, we propose a method to modify the luminous flux degradation with the Tj and mu to meet the requirements of a constant degradation rate in the data fitting. The experimental results show that with the proposed method, the accelerated lifetimes of samples are bigger than that of the current method with increment values from 8.8% to 21.4% in this research. (C) 2016 Optical Society of America |
| 收录类别 | SCI ; EI |
| 语种 | 英语 |
| 源URL | [http://ir.ciomp.ac.cn/handle/181722/57000]  |
| 专题 | 长春光学精密机械与物理研究所_中科院长春光机所知识产出 |
| 推荐引用方式 GB/T 7714 | Ke, H. L.,L. Jing,J. Hao,et al. Estimation of the average junction temperature of two phosphors-converted white LED array based on (B plus Y plus R)/B ratio[J]. Solid-State Electronics,2016,121. |
| APA | Ke, H. L..,L. Jing.,J. Hao.,Q. Gao.,Y. Wanga.,...&Q. Sun and Z. J. Xu.(2016).Estimation of the average junction temperature of two phosphors-converted white LED array based on (B plus Y plus R)/B ratio.Solid-State Electronics,121. |
| MLA | Ke, H. L.,et al."Estimation of the average junction temperature of two phosphors-converted white LED array based on (B plus Y plus R)/B ratio".Solid-State Electronics 121(2016). |
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