Dominant free‐exciton recombination radiation in chemical vapor deposited diamonds
Dominant free‐exciton recombination radiation in chemical vapor deposited diamonds
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DOI：
10.1063/1.111126
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发表时间：
1994-01
影响因子：
4
通讯作者：
H. Kawarada;T. Tsutsumi;H. Hirayama;A. Yamaguchi
中科院分区：
文献类型：
--
作者：
H. Kawarada;T. Tsutsumi;H. Hirayama;A. Yamaguchi
已经从化学气相沉积的金刚石中获得了占主导地位的自由激子复合辐射。晶体在微波等离子体中使用用氢气稀释的CO和CO2混合物形成。CO2浓度和样品在等离子体中的位置影响样品的结晶度。在放电区边缘形成的样品中，自由激子复合辐射与带A发射之间的峰值发射强度比大于20，并且具有最佳CO2浓度。这是有史以来报道的最高钻石价值。
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.