Photoluminescence of micropowders of europium-doped cubic boron nitride

E. M. Shishonok, S. V. Leonchik, A. Braud, J. W. Steeds, O. R. Abdullaev, A. S. Yakunin, D. M. Zhigunov

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

Micropowders of cubic boron nitride (cBN) doped with europium have been obtained by high-pressure synthesis. The photoluminescence (PL) of Eu 3+ ions introduced into the crystal lattice of cBN has been investigated. It has been established from kinetic studies of the PL that the Eu3+ ions in cBN are located in two crystallographic positions with low symmetry of the crystal field. Annealing the cBN micropowders increases the number of crystallographic positions of Eu3+ in cBN to four, while electron irradiation causes the PL intensity of the Eu3 ions to increase as a consequence of energy transport from the RC luminescent radiation centers. It has been established that, in an optoelectronic device, the UV electroluminescence of the InGaN/AlGaN/GaN heterostructure excites red PL of the Eu:cBN phosphor.

Original languageEnglish
Pages (from-to)788-795
Number of pages8
JournalJournal of Optical Technology (A Translation of Opticheskii Zhurnal)
Volume77
Issue number12
DOIs
Publication statusPublished - Dec 2010
Externally publishedYes

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