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Proceedings Paper

Bleaching effects in photoluminescence of rare-earth ions in fluoride heterostructures
Author(s): S. V. Gastev; J. C. Alvarez; V. V. Vitvinsky; Nikolai S. Sokolov; A. Yu. Khilko
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Paper Abstract

Bleaching effects in photoluminescence (PL) of rare earth Sm2+ ions in CaF2:Sm/Si(111) heterostructures and Eu2+ ions in [CdF2/CaF2:EU]n/Si(111) superlattices have been observed for the first time. The PL was excited by He-Ne ((lambda) equals 633 nm) and N2 ((lambda) $equals 337 nm) lasers respectively. It was found that illumination of wavelength (lambda) <EQ 366 nm results in recovery of Sm2+ PL in the bleached spot. A mechanism based on electron transfer between Si and these ions through CaF2 conduction band is suggested to explain the phenomenon.

Paper Details

Date Published: 3 January 1996
PDF: 6 pages
Proc. SPIE 2706, Tenth Feofilov Symposium on Spectroscopy of Crystals Activated by Rare-Earth and Transitional-Metal Ions, (3 January 1996); doi: 10.1117/12.229166
Show Author Affiliations
S. V. Gastev, A.F. Ioffe Physico-Technical Institute (Russia)
J. C. Alvarez, A.F. Ioffe Physico-Technical Institute (Russia)
V. V. Vitvinsky, A.F. Ioffe Physico-Technical Institute (Russia)
Nikolai S. Sokolov, A.F. Ioffe Physico-Technical Institute (Russia)
A. Yu. Khilko, A.F. Ioffe Physico-Technical Institute (Russia)


Published in SPIE Proceedings Vol. 2706:
Tenth Feofilov Symposium on Spectroscopy of Crystals Activated by Rare-Earth and Transitional-Metal Ions
Alexander I. Ryskin; V. F. Masterov, Editor(s)

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