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http://dx.doi.org/10.6111/JKCGCT.2022.32.5.169

4H-SiC bulk single crystal growth using recycled powder  

Yeo, Im Gyu (Industrial Materials Research Group, Research Institute of Industrial Science & Technology (RIST))
Lee, Jae Yoon (Industrial Materials Research Group, Research Institute of Industrial Science & Technology (RIST))
Chun, Myong Chuel (Industrial Materials Research Group, Research Institute of Industrial Science & Technology (RIST))
Abstract
This study is to verify the feasibility of SiC single crystal growth using recycled SiC powder. The fundamental physical properties such as particle size, shape, composition and impurities of the recycled powder were analyzed, and the sublimation behavior occurring inside the reactor were predicted using the basic data. As a result of comprehensive judgment, the physical properties of the recycled powder were suitable for single crystal growth, and single crystal growth experiments were conducted using this. 100 mm 4H-SiC single crystal ingot with a height of 25 mm was grown without polytype inclusion. In the case of micro-pipe density was 0.02 ea/cm2 and resistivity characteristics was 0.015~0.020 ohm·cm2, commercial level quality was obtained, but additional analysis related to dislocation density and stacking faults is required for device application.
Keywords
Silicon carbide; Single crystal; Sublimation; Recycled powder; Substrate;
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Times Cited By KSCI : 1  (Citation Analysis)
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