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Optical properties of HgS and HgS : Co2+ crystals

Published online by Cambridge University Press:  31 January 2011

Sung-Hyu Choe ,
Ki-Su Yu ,
Jae-Eun Kim ,
Hae Yong Park  and
Wha-Tek Kim
Sung-Hyu Choe
Affiliation:
Department of Physics, Chosun University, Kwangju 501–759, Republic of Korea
Ki-Su Yu
Affiliation:
Department of Physics, Wonkwang University, Iri 570–749, Republic of Korea
Jae-Eun Kim
Affiliation:
Department of Physics, Korea Advanced Institute of Science and Technology, Taejon 305–701, Republic of Korea
Hae Yong Park
Affiliation:
Department of Physics, Korea Advanced Institute of Science and Technology, Taejon 305–701, Republic of Korea
Wha-Tek Kim
Affiliation:
Solid State Physics Laboratory, Department of Physics, Chonnam National University, Kwangju 500–757, Republic of Korea
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Abstract

Melt-grown crystals of HgS and HgS : Co2+ were used to measure their optical absorption spectra. The optical energy band gaps of these crystals were 2.030 eV and 1.870 eV at room temperature, respectively. The impurity optical absorption peaks of Co2+ were observed at 4030, 5988, 12285, 12672, and 12905 cm−1. These peaks can be attributed to the electronic transitions between the split energy levels of Co2+ ion located at the Td symmetry site, where the crystal field, Racah, and spin-orbit coupling parameters were given by Dq = 403, B = 427, and Λ = −155 cm−1, respectively.

Type
Articles
Information
Journal of Materials Research , Volume 6 , Issue 12 , December 1991 , pp. 2677 - 2679
Copyright
Copyright © Materials Research Society 1991

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