Cathodoluminescent efficiency of Y 3 Al 5 O 12  and YAlO 3  single crystals in dependence on Ce 3+  and other dopants concentration | Zendy

Autrata R. | Zendy; Schauer P. | Zendy; Kvapil Jo. | Zendy; Kvapil Ji. | Zendy

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Cathodoluminescent efficiency of Y 3 Al 5 O 12 and YAlO 3 single crystals in dependence on Ce 3+ and other dopants concentration

Author(s) -

Autrata R.,

Schauer P.,

Kvapil Jo.,

Kvapil Ji.

Publication year - 1983

Publication title -

crystal research and technology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.377

H-Index - 64

eISSN - 1521-4079

pISSN - 0232-1300

DOI - 10.1002/crat.2170180711

Subject(s) - ion , analytical chemistry (journal) , activator (genetics) , cathodoluminescence , quenching (fluorescence) , saturation (graph theory) , materials science , dopant , inorganic chemistry , mineralogy , chemistry , doping , fluorescence , luminescence , optics , biochemistry , physics , mathematics , optoelectronics , organic chemistry , chromatography , combinatorics , gene

The content of Ce 3+ ions in the investigated single crystals grown under reducing conditions is limited by a low value of the distribution coefficient. This distribution coefficient decreases sharply with increasing concentration of Ce 3+ ions in a melt. Cathodoluminescent efficiency rises with increasing Ce 3+ concentration up to a certain state of saturation. At higher concentrations of Ce 3+ ions emission from activator centres is dominant, while at lower concentrations defect centres play an important part. Iron acts as a strong quenching centre, especially in the YAlO 3 lattice. Nd, Ir, Fe, Ti, Cr centres exhibit a high quenching effect, too. A trace amount of Mo enhances cathodoluminescent efficiency.

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