Bleaching effects in photoluminescence of rare-earth ions in fluoride heterostructures

S. V. Gastev; J. C. Alvarez; V. V. Vitvinsky; Nikolai S. Sokolov; A. Yu. Khilko

doi:10.1117/12.229166

3 January 1996 Bleaching effects in photoluminescence of rare-earth ions in fluoride heterostructures

S. V. Gastev, J. C. Alvarez, V. V. Vitvinsky, Nikolai S. Sokolov, A. Yu. Khilko

Proceedings Volume 2706, Tenth Feofilov Symposium on Spectroscopy of Crystals Activated by Rare-Earth and Transitional-Metal Ions; (1996) https://doi.org/10.1117/12.229166
Event: Tenth Feofilov Symposium on Spectroscopy of Crystals Activated by Rare Earth and Transitional Ions, 1995, St. Petersburg, Russian Federation

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.

Citation Download Citation

S. V. Gastev, J. C. Alvarez, V. V. Vitvinsky, Nikolai S. Sokolov, and A. Yu. Khilko "Bleaching effects in photoluminescence of rare-earth ions in fluoride heterostructures", Proc. SPIE 2706, Tenth Feofilov Symposium on Spectroscopy of Crystals Activated by Rare-Earth and Transitional-Metal Ions, (3 January 1996); https://doi.org/10.1117/12.229166

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