Vibrational Signatures of Substitutional Oxygen in CdTe and CdSe
Vibrational Signatures of Substitutional Oxygen in CdTe and CdSe
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CdTe 和 CdSe 中替代氧的振动特征
DOI:
10.1002/pssb.202100203
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发表时间:
2021
期刊:
影响因子:
--
通讯作者:
E. V. Lavrov
中科院分区:
文献类型:
--
作者:
F. Herklotz;S. Tiede;E. V. Lavrov
Vibrational modes of substitutional oxygen on the anion site in cubic CdTe and wurtzite CdSe are identified from infrared (IR) absorption measurements on single crystals codoped with18O and16O. The16O isotope variety of the defect in CdTe gives rise to a local vibrational mode at 349.8(10 K), whereas the corresponding species in CdSe results in a doublet structure at 370.6 and 372.5(10 K). The latter two modes are fully polarized for light parallel and perpendicular to thecaxis of the CdSe crystal, respectively, and belong to the nondegenerateand the twofold degenerateErepresentations of the C3v point group.
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