Preparation of Li2B4O7 thin films by sol-gel method and their characterization

Toshinobu Yoko; Hiroya Yamashita; Sumio Sakka

doi:10.1117/12.22578

1 November 1990 Preparation of Li₂B₄O₇ thin films by sol-gel method and their characterization

Toshinobu Yoko, Hiroya Yamashita, Sumio Sakka

Author Affiliations +

Proceedings Volume 1328, Sol-Gel Optics; (1990) https://doi.org/10.1117/12.22578
Event: 34th Annual International Technical Symposium on Optical and Optoelectronic Applied Science and Engineering, 1990, San Diego, CA, United States

Abstract

The sol-gel method using lithium and boron-n-tributoxide as starting materials has been applied to prepare Li2B4O7 coating films on silica glass, silicon and sapphire single crystal substrates. The effects of the amounts of water and acid added to coating solutions, and the kinds of substrate on the crystallization of Li2B4O7 coating films were fully investigated. It was found that a sufficient amount of water is required for obtaining well-crystallized Li2B4O7 films of single phase, the addition of acids such as hydrochloric and acetic acids to the coating solution suppresses crystallization up to 600°C and gives highly oriented Li2B4O7 single phase films on further heating at 800°C.

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Toshinobu Yoko, Hiroya Yamashita, and Sumio Sakka "Preparation of Li₂B₄O₇ thin films by sol-gel method and their characterization", Proc. SPIE 1328, Sol-Gel Optics, (1 November 1990); https://doi.org/10.1117/12.22578

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