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Substitutional Sulfur in CdSe: Localized Vibrational Modes
Physica Status Solidi (B) - Basic Solid State Physics ( IF 1.5 ) Pub Date : 2020-05-15 , DOI: 10.1002/pssb.202000204
Frank Herklotz 1 , Eduard V. Lavrov 1 , Vladlen V. Melnikov 2
Affiliation  

The substitutional sulfur at the selen site in wurtzite CdSe is identified by a combination of infrared absorption spectroscopy and first principles calculations. The dominant S 32 isotope gives rise to two local vibrational modes at 270.6 and 271.4 cm−1 (10 K) assigned to the nondegenerate A 1 and the twofold degenerate E representations of the C 3 v point group. The corresponding signals of the S 34 isotope occur at 263.6 and 264.4 cm−1. The results of measurements performed on a set of samples supplied by different manufacturers highlight that sulfur is an ubiquitous impurity in CdSe unintentionally incorporated into the crystals during the process of growth.

中文翻译:

CdSe中的取代硫:局部振动模式

结合红外吸收光谱法和第一性原理计算,鉴定了纤锌矿CdSe中硒位的取代硫。优势 小号 32 同位素在270.6和271.4 cm -1(10 K)处产生两个局部振动模式,分配给非简并 一种 1个 和的二次简并E表示 C 3 v 点组。对应的信号 小号 34 同位素出现在263.6和264.4 cm -1处。对不同制造商提供的一组样品进行的测量结果表明,硫是CdSe中无处不在的杂质,在生长过程中无意地掺入了晶体中。
更新日期:2020-05-15
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