Work

Optical properties of rare-earth oxides and oxynitrides, .... towards "second generation" UV absorbers

Year: 2004

Type: article

Abstract: "Second-generation" UV-blocking materials are needed. Using the fluorite-type rare-earth tungstates R6WO12 as starting reference compounds, anionic or cationic substitutions were achieved in (R,R’)-(W,Mo)-(O,N) systems, thus delimiting large solid solution domains. The continuous shift of the absorption edge in diffuse reflectance spectra towards lower energy values makes it possible to tune it at the required value of 3.1 eV (400 nm), with in several cases a steep enough slope. Attempts were also carried out in perovskite (A,R)-Ti-(O,N) systems (A = alkaline-earth, R = rare-earth) to isolate suitable oxynitride compositions.

Source: HAL

Authors: Cheviré, François, Tessier, Franck, Marchand, Roger

Institution: Institut des Sciences Chimiques de Rennes

Language: English

Topic: Inorganic Chemistry and Materials

Subfield: Inorganic Chemistry

Field: Chemistry

Domain: Physical Sciences

Open Access status: green

OpenAlex ID: W2473414681

FWCI:

Cites: 3

Cited by: 1

Related to: 10