Thermal Conductivity of Hybrid SiC/Si Substrates for the Growth of LED Heterostructures

IF 0.8 4区 物理与天体物理 Q4 PHYSICS, APPLIED Technical Physics Letters Pub Date : 2024-03-14 DOI:10.1134/s1063785023010200
S. A. Kukushkin, L. K. Markov, A. V. Osipov, G. V. Svyatets, A. E. Chernyakov, S. I. Pavlov
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Abstract

the thermal characteristics of SiC/Si samples obtained by the method of coordinated substitution of atoms at different thicknesses of SiC have been experimentally investigated. It has been found that for SiC thicknesses less than 200 nm, the thermal resistance of SiC/Si is approximately equal to 2 K/W, which is the same as for pure silicon substrate. Such samples will perfectly remove heat from the light-emitting heterostructure grown on SiC/Si. With an increase in the thickness of SiC, the SiC film is detached, which leads to a loss of thermal contact between SiC and Si. The thermal resistance increases at the same time by more than two orders of magnitude. The ability to remove easily the opaque part of the substrate can form the basis of the technology for manufacturing flip-chip LED.

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用于生长 LED 异质结构的混合碳化硅/硅基底的热传导率
摘要 通过实验研究了不同厚度的碳化硅原子配位置换法获得的碳化硅/硅样品的热特性。实验发现,当碳化硅厚度小于 200 nm 时,SiC/Si 的热阻约等于 2 K/W,与纯硅衬底的热阻相同。这样的样品可以完美地去除生长在 SiC/Si 上的发光异质结构的热量。随着碳化硅厚度的增加,碳化硅薄膜会脱落,从而导致碳化硅和硅之间失去热接触。同时,热阻增加了两个数量级以上。轻松去除衬底不透明部分的能力可为制造倒装芯片 LED 的技术奠定基础。
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来源期刊
Technical Physics Letters
Technical Physics Letters 物理-物理:应用
CiteScore
1.50
自引率
0.00%
发文量
44
审稿时长
2-4 weeks
期刊介绍: Technical Physics Letters is a companion journal to Technical Physics and offers rapid publication of developments in theoretical and experimental physics with potential technological applications. Recent emphasis has included many papers on gas lasers and on lasing in semiconductors, as well as many reports on high Tc superconductivity. The excellent coverage of plasma physics seen in the parent journal, Technical Physics, is also present here with quick communication of developments in theoretical and experimental work in all fields with probable technical applications. Topics covered are basic and applied physics; plasma physics; solid state physics; physical electronics; accelerators; microwave electron devices; holography.
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