Fabrication and Ultraviolet Absorption of Sol-Gel-Derived Germanium Oxide Glass Thin Films

Autor:	Byeong-Soo Bae, Junmo Koo, Jae Hyeok Jang
Rok vydání:	2000
Předmět:	Materials science Annealing (metallurgy) Mineralogy chemistry.chemical_element Sintering Germanium Oxygen law.invention chemistry Chemical engineering law Materials Chemistry Ceramics and Composites Crystallization Thin film Sol-gel Germanium oxide
Zdroj:	ResearcherID Scopus-Elsevier
ISSN:	1551-2916 0002-7820
DOI:	10.1111/j.1151-2916.2000.tb01393.x
Popis:	Germanium oxide glass thin films were prepared by the sol–gel method and annealed under reduced atmosphere to create more oxygen-deficient defects. The densification and crystallization were examined depending on sintering and annealing conditions. Thus, homogeneous germanium oxide thin films with a high content of oxygen vacancies were fabricated. Ultraviolet absorption and oxygen vacancies of the films were investigated as a function of annealing temperature and time. Optical absorption in the 5-eV region due to the formation of oxygen vacancies is enhanced with increasing annealing temperature and time. The formation energy of oxygen vacancies is calculated to be about 1.0 eV.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::644b98863813ea45a280da0cea516c18 https://doi.org/10.1111/j.1151-2916.2000.tb01393.x Zobrazit plný text záznamu Plný text