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http://dx.doi.org/10.4313/JKEM.2003.16.4.272

Optical Properties of Zn4GeSe6:Co2+ Single Crystals  

김형곤 (조선이공대학 전기과)
김남오 (조선이공대학 전기과)
최영일 (조선이공대학 광전자정보학부)
김덕태 (동아인재대학 전자과)
김창주 (한국남부발전㈜ 하동화력본부)
Publication Information
Journal of the Korean Institute of Electrical and Electronic Material Engineers / v.16, no.4, 2003 , pp. 272-279 More about this Journal
Abstract
In this work Zn$_4$GeSe$_{6}$ :CO$^{2+}$ single crystals were grown by the chemical transport reaction method in which the iodine was used as the transporting agent. The Zn$_4$GeSe$_{6}$ :CO$^{2+}$ single crystal was found to have a monoclinic structure. The optical absorption spectra of grown crystals were investigated using a temperature-controlled UV-VIS -NIR spectrophotometer. The temperature dependence of band-edge absorption was in a good agreement with the Varshni equation. The observed impurity absorption peaks could be explained as arising from the electron transition between energy levels of Co$^{2+}$ ion sited at the T$_{d}$ symmetry point.
Keywords
Chemical transport reaction method; $Zn_{4}GeSe_{6}:Co^{2+}$; Optical absorption; Monoclinic structure; Optical energy gap; Temperature dependence;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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