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Optical Absorption Measurements on Nitrogen-doped 6H-SiC Single Crystals 被引量:1

Optical Absorption Measurements on Nitrogen-doped 6H-SiC Single Crystals
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摘要 6H-SiC bulk crystals have been prepared by sublimation method in an inductively heated growth reactor. The effect of nitrogen doping on absorption for 6H-SiC was investigated. The absorption measurement based on optical method is a non-destructive and non-contact method. The band-gap narrowing with higher doping concentration was observed. For n-type doping below band-gap absorption band at 623 nm for 6H-SiC was observed. The peak intensity of the absorption band increased with increasing charge carrier concentration obtained from Hall measurements. It is also found that the nitrogen doping level decreased in the radial direction and it was the highest at the beginning of growth. 6H-SiC bulk crystals have been prepared by sublimation method in an inductively heated growth reactor. The effect of nitrogen doping on absorption for 6H-SiC was investigated. The absorption measurement based on optical method is a non-destructive and non-contact method. The band-gap narrowing with higher doping concentration was observed. For n-type doping below band-gap absorption band at 623 nm for 6H-SiC was observed. The peak intensity of the absorption band increased with increasing charge carrier concentration obtained from Hall measurements. It is also found that the nitrogen doping level decreased in the radial direction and it was the highest at the beginning of growth.
出处 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 北大核心 2007年第10期1171-1174,共4页 结构化学(英文)
基金 the National Natural Science Foundation of China (No. 50472068) Natural Science Foundation of Shandong Province,(No. Y2006F15) Shandong Provincial Significant Science and Technology Attack Project (No. 2005GG2107001) Shandong Provincial Independent Innovation Significant Science and Technology Special Plan (No. 2006GG1103046)
关键词 6H-SIC SUBSTRATE nitrogen doping absorption measurement 6H-SiC, substrate, nitrogen doping, absorption measurement
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同被引文献16

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