Photoluminescence characterization of high-purity synthesized diamond

被引:8
|
作者
Horiuchi, K [1 ]
Nakamura, K [1 ]
Yamashita, S [1 ]
Kuwata-Gonokami, M [1 ]
机构
[1] UNIV TOKYO, FAC ENGN, DEPT APPL PHYS, BUNKYO KU, TOKYO 113, JAPAN
关键词
diamond; high-temperature high-pressure synthesis; photoluminescence; free exciton; phosphorescence;
D O I
10.1143/JJAP.36.L1505
中图分类号
O59 [应用物理学];
学科分类号
摘要
Photoluminescence (PL) properties of high-purity synthesized diamond are studied using the 5th-harmonic of a Nd:YAG laser. Free-exciton related emissions are dominant even at room temperature, which confirms high crystal perfection of the sample. The intensity of the FE-related peaks decreases at temperatures below 150 K, and existence of shallow trap centers is suggested. Also there exists a long-lived broad band in the visible region. These features cannot be observed by cathodoluminescence, and PL characterization is proved to be effective for characterization of such high-quality diamond.
引用
收藏
页码:L1505 / L1507
页数:3
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