Skip to content
6CCVD Research

Analysis of diamond-like carbon film on enhancing thermal radiation of substrate of high-power LED

At a Glance

Section titled ā€œAt a Glanceā€
MetadataDetails
Publication Date2019-08-01
AuthorsXingyang Wu, Weilin Duan, Siwei Wu, Jianhua Zhang
InstitutionsShanghai University
Citations2

Abstract

Section titled ā€œAbstractā€

Miniaturization and high-power are the important development directions of electronic components today. The volume of Light emitting diode (LED) is getting smaller and smaller, but the power is increasing dramatically. If the heat accumulated in the device and let the junction temperature of the electronic components exceeds the critical value, the reliability and lifetime of the device will be reduced markedly. Diamond-Like Carbon (DLC) films have high hardness, high wear-resistance, high thermal conductivity, high insulation and so on, and have been widely used in mechanical, electronic, optical and medical fields. This study focused on the effect of radiation heat transfer in the heat dissipation of high-power LEDs, DLC films were deposited on the packaging substrates of LED lamps, and the thickness influence of DLC films on the heat radiation performance was investigated by Infrared thermal imager. The LED models were established by using Solid-Works drawing software, and the thermal simulation analysis of LED with different thickness of DLC films was carried out by ANSYS. The experimental results show that the surface temperature of the LEDs with 1.6, 2.4 and 3.2 thick DLC films on the aluminum substrate is 1.2, 1.5 and 2.3Ā°C lower than that of the LED without DLC film, respectively. The simulation results are consistent with the experimental results, indicating that thicker DLC film has better effect on increasing the thermal radiation of the substrates.

Tech Support

Section titled ā€œTech Supportā€

Original Source

Section titled ā€œOriginal Sourceā€

References

Section titled ā€œReferencesā€
  1. 2008 - Advances in LED packaging and thermal management materials
  2. 2014 - DLC thin films influence the thermal dissipation of LED lights
  3. 2016 - The thickness of DLC thin film affects the thermal conduction of HPLED lights

Reads Similar to This

Resonant Excitation and Purcell Enhancement of Coherent Nitrogen-Vacancy Centers Coupled to a Fabry-Perot Microcavity Impacts of Si-doping on vacancy complex formation and their influences on deep ultraviolet luminescence dynamics in Al x Ga 1āˆ’ x N films and multiple quantum wells grown by metalorganic vapor phase epitaxy High carrier mobility of diamond (100) enabled by surface modification using doped hexagonal boron nitride