English  |  正體中文  |  简体中文  |  Items with full text/Total items : 26988/38789
Visitors : 2345284      Online Users : 40
RC Version 4.0 © Powered By DSPACE, MIT. Enhanced by NTU Library IR team.
Scope Adv. Search
LoginUploadHelpAboutAdminister

Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/51580

Title: Polarization-dependent electrolyte electroreflectance study of Cu2ZnSiS4 and Cu2ZnSiSe4 single crystals
Authors: S. Levcencoa
D. Dumcenco
Y.S. Huang
E. Arushanov
V. Tezlevan
K.K. Tiong
C.H. Du
Contributors: 國立臺灣海洋大學:電機工程學系
Keywords: Semiconductors
Optical properties
Optical spectroscopy
Date: 2011-06
Issue Date: 2018-12-07T06:49:14Z
Publisher: Journal of Alloys and Compounds
Abstract: Abstract: Polarization-dependent electrolyte electroreflectance (EER) measurements were carried out on the oriented Cu2ZnSiS4 and Cu2ZnSiSe4 single crystals at room temperature. Thin blade single crystals of Cu2ZnSiS4 and Cu2ZnSiSe4 were grown by chemical vapor transport technique using iodine as a transport agent. Laue pattern normal to the basal plane of the as-grown crystal revealed the formation of orthorhombic structure with the normal along [2 1 0] and the c axis parallel to the long edge of the crystal platelet. The polarized EER spectra in the vicinity of the direct band edge of Cu2ZnSiS4 displayed distinct structures associated with transitions from two upper-most valence bands to the conduction band minimum at Γ point. In the E⊥c configuration, the feature designated as EA ∼ 3.345 eV was detected and for Е‖c, only EB ∼ 3.432 eV appeared. For Cu2ZnSiSe4, three features denoted as EA, EB, and EC at around 2.348, 2.406 and 2.605 eV, respectively, were recorded for E⊥c polarization, whereas in the Е‖c, only EB and EC were the allowed transitions. Based on the experimental observations and a recent band-structure calculation by Chen et al. [Phys. Rev. B 82 (2010) 195203], plausible band structures near the direct band edge of Cu2ZnSiS4 and Cu2ZnSiSe4 have been proposed.
Relation: 509(25) pp.7105-7108
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/51580
Appears in Collections:[電機工程學系] 期刊論文

Files in This Item:

File Description SizeFormat
index.html0KbHTML14View/Open


All items in NTOUR are protected by copyright, with all rights reserved.

 


著作權政策宣告: 本網站之內容為國立臺灣海洋大學所收錄之機構典藏,無償提供學術研究與公眾教育等公益性使用,請合理使用本網站之內容,以尊重著作權人之權益。
網站維護: 海大圖資處 圖書系統組
DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library IR team Copyright ©   - Feedback