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DOMINANT FREE-EXCITON RECOMBINATION RADIATION IN CHEMICAL-VAPOR-DEPOSITED DIAMONDS

被引：37
作者：
KAWARADA, H
TSUTSUMI, T
HIRAYAMA, H
YAMAGUCHI, A
机构：
[1] School of Science and Engineering, Waseda University, Shinjuku
来源：
APPLIED PHYSICS LETTERS | 1994年 / 64卷 / 04期
关键词：
D O I：
10.1063/1.111126
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Dominant free-exciton recombination radiation has been obtained from chemical vapor deposited diamonds. The crystals are formed in a microwave plasma using the mixtures CO and CO2 diluted with hydrogen. The concentration of CO2 and the position of the samples in the plasma affect the crystallinity of the samples. The peak emission intensity ratio between the free-exciton recombination radiation and the band A emission is more than 20 in the samples formed at the edge of discharging area and with the optimum concentration of CO2. The value is the highest ever reported in diamond.
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页码：451 / 453
页数：3
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