Optical characterization of Au-doped rhenium diselenide single crystals

Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/51635

Title:	Optical characterization of Au-doped rhenium diselenide single crystals
Authors:	D.O. Dumcenco Y.S. Huang C.H. Liang K.K. Tiong
Contributors:	國立臺灣海洋大學:電機工程學系
Date:	2008
Issue Date:	2018-12-13T03:43:44Z
Publisher:	JOURNAL OF CHEMICAL PHYSICS
Abstract:	Abstract: In this paper, the optical properties of Au-doped rhenium diselenide (ReSe2:Au) single crystals have been reported. The doping effects of the material were characterized by polarization-dependent transmittance, piezoreflectance (PzR), and photoreflectance (PR) measurements in the temperature range of 15–300 K. The indirect energy gap of ReSe2:Au shows a slight redshift with respect to the undoped sample. The low temperature PzR and PR spectra reveal an Eex1 feature at E∥b polarization as well as two features, Eex2 and Eex3, at E⊥b polarization. The angular dependence of the excitonic feature amplitudes agrees well with Malus’ law. In comparison with the undoped ReSe2, the excitonic transition energies remain practically unchanged, while the broadening parameter of the excitonic transition features slightly increases due to impurity scattering. In addition, the parameters that describe the temperature variations of the band-edge excitonic transitions were evaluated and discussed.
Relation:	104(6)
URI:	http://ntour.ntou.edu.tw:8080/ir/handle/987654321/51635
Appears in Collections:	[電機工程學系] 期刊論文

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