Thermal Performance Enhancement of Light Emitting Diode Device with Multilayer-Graphene Transferred to the Substrate Surface. (1st January 2017)

• Record Type: Journal Article
• Authors: Yin, Luqiao; Nan, Tingting; He, Piaopiao; Chen, Zhangfu; Yang, Lianqiao; Zhang, Jianhua
• Is Part Of: ECS journal of solid state science and technology. Volume 6:Number 1(2017)
• Page Start: R35
• Page End: R39
• Publication Date: 2017-01-01
• Subjects: junction temperatures -- Light emitting diodes -- Multilayer-graphene -- Thermal diffusion coefficients; Solid state chemistry -- Periodicals; Electronics -- Materials -- Periodicals; Electrochemistry -- Periodicals; 541.0421
• DOI: 10.1149/2.0241701jss
• Languages: English
• ISSNs: 2162-8777

Abstract

Abstract : The heat centralization of high power light emitting diode becomes a challengeable issue by reason of the strong relationship between device reliability and operating temperature. The purpose of this work is to study the thermal behavior of light emitting diode device with graphene film transferred to the substrate surface. The experiment results show that junction temperature of the device with graphene film transferred to the alumina ceramic substrate surface is about 2.2°C lower. And the thermal resistance is low by 3.11 K/W compared to that of normal device. It is validated that graphene film can improve the thermal conductivity ability of the alumina ceramic substrate. Accordingly, the results are helpful in enhancing the performance and reliability of high power light emitting diode.