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Title: CdS bulk crystal growth by optical floating zone method: strong photoluminescence upconversion and minimum trapped state emission
Authors: Du, Ke-Zhao
Wang, Xingzhi
Zhang, Jun
Liu, Xinfeng
Kloc, Christian
Xiong, Qihua
Keywords: CdS bulk crystal
Photoluminescence upconversion
Issue Date: 2016
Source: Du, K.-Z., Wang, X., Zhang, J., Liu, X., Kloc, C., & Xiong, Q. (2017). CdS bulk crystal growth by optical floating zone method: strong photoluminescence upconversion and minimum trapped state emission. Optical Engineering, 56(1), 011109-.
Series/Report no.: Optical Engineering
Abstract: CdS materials have shown promise in optical refrigeration. However, the current success of laser cooling is still limited to nanobelt morphology. It is, therefore, important to explore whether bulk crystal growth technology could provide high-quality materials for laser cooling studies. Herein, we have demonstrated CdS bulk crystal growth by a modified optical floating zone method. The low temperature and continuous displacement of the CdS crystalline zone have resulted in high-quality CdS bulk crystals, which show strong photoluminescence upconversion with the absence of the long-wavelength and broad emission centered ∼700 nm that commercial CdS wafers usually exhibit. All these characterizations have confirmed the excellent stoichiometric nature and crystal quality of CdS bulk crystals, which is much better than the commercial counterparts for laser cooling studies.
ISSN: 0091-3286
DOI: 10.1117/1.OE.56.1.011109
Schools: School of Electrical and Electronic Engineering 
School of Materials Science & Engineering 
School of Physical and Mathematical Sciences 
Rights: © 2016 Society of Photo-optical Instrumentation Engineers (SPIE). This paper was published in Optical Engineering and is made available as an electronic reprint (preprint) with permission of Society of Photo-optical Instrumentation Engineers (SPIE). The published version is available at: []. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law.
Fulltext Permission: open
Fulltext Availability: With Fulltext
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