A synthetic diamond heat spreader that includes a first layer of synthetic diamond material forming a base support layer and a second layer of synthetic diamond material disposed on the first layer of synthetic diamond material and forming a diamond surface layer. The diamond surface layer has a thickness equal to or less than a thickness of the base support layer. The diamond surface layer has a nitrogen content less than that of the base support layer. The nitrogen content of the diamond surface layer and the diamond support layer is selected such that the thermal conductivity of the base support layer is in a range 1000 W/mK to 1800 W/mK and the thermal conductivity of the surface support layer is in a range 1900 W/mK to 2800 W/mK.
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机译:一种合成金刚石散热器,其包括形成基础支撑层的第一层合成金刚石材料和设置在第一层合成金刚石材料上并形成金刚石表面层的第二层合成金刚石材料。金刚石表面层的厚度等于或小于基础支撑层的厚度。金刚石表面层的氮含量小于基础支撑层的氮含量。选择金刚石表面层和金刚石支撑层的氮含量,以使基础支撑层的热导率在1000W / mK至1800W / mK的范围内,并且表面支撑层的热导率在1000W / mK至400W之间。范围1900 W / mK至2800 W / mK。
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