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Type: Journal article
Title: Mechanistic insight into the non-hydrolytic sol-gel process of tellurite glass films to attain a high transmission
Author: Pan, X.
Zhao, J.
Qian, G.
Zhang, X.
Ruan, Y.
Abell, A.
Ebendorff-Heidepriem, H.
Citation: RSC Advances: an international journal to further the chemical sciences, 2020; 10(4):2404-2415
Publisher: Royal Society of Chemistry
Issue Date: 2020
ISSN: 2046-2069
Statement of
Xuanzhao Pan, Jiangbo Zhao, Gujie Qian, Xiaozhou Zhang, Yinlan Ruan, Andrew Abell and Heike Ebendorff-Heidepriemae
Abstract: The development of amorphous films with a wide transmission window and high refractive index is of growing significance due to the strong demand of integrating functional nanoparticles for the next-generation hybrid optoelectronic films. High-index TeO2-based glass films made via the sol–gel process are particularly suitable as their low temperature preparation process promises high compatibility with a large variety of nanoparticles and substrates that suffer from low thermal stability. However, due to the lack of in-depth understanding of the mechanisms of the formation of undesired metallic-Te (highly absorbing species) in the films, the preparation of high-transmission TeO2-based sol–gel films has been severely hampered. Here, by gaining insight into the mechanistic chemistry of metallic-Te formation at different stages during the non-hydrolytic sol–gel process, we identify the chemical route to prevent the generation of metallic-Te in a TeO2-based film. The as-prepared TeO2-based film exhibits a high transmission that is close to the theoretical limit. This opens up a new avenue for advancing the performance of hybrid optoelectronic films via incorporating a large variety of unique nanoparticles.
Rights: © The Royal Society of Chemistry 2020. Open Access Article.This article is licensed under a Creative Commons Attribution 3.0 Unported Licence.
DOI: 10.1039/c9ra10731b
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Physics publications

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