New concepts for VUV phosphors with high quantum efficiency ( q  > 100%) | Zendy

Donker H. | Zendy; Wegh R. T. | Zendy; Meijerink A. | Zendy; Krupa J. C. | Zendy; Queffelec M. | Zendy

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New concepts for VUV phosphors with high quantum efficiency ( q > 100%)

Author(s) -

Donker H.,

Wegh R. T.,

Meijerink A.,

Krupa J. C.,

Queffelec M.

Publication year - 1998

Publication title -

journal of the society for information display

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.578

H-Index - 52

eISSN - 1938-3657

pISSN - 1071-0922

DOI - 10.1889/1.1985209

Subject(s) - phosphor , quantum efficiency , quantum , excitation , optoelectronics , materials science , relaxation (psychology) , process (computing) , optics , physics , computer science , quantum mechanics , psychology , social psychology , operating system

— The first overview of the 4 f levels of Gd 3+ in the VUV is reported. It is shown that quantum cutting is a very promising phenomenon to make VUV phosphors with a quantum efficiency greater than 100% and that the efficiency of this process can be improved by cross‐relaxation. The visible quantum efficiency of LiGdF 4 : Eu 3+ 0.5 mol% upon excitation in the VUV is shown to be 195%.

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