Photoluminescence of erbium ions in heterostructures with silicon nanocrystalsстатья
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Дата последнего поиска статьи во внешних источниках: 9 ноября 2017 г.
Аннотация:Photoluminescence properties of erbium-doped silicon dioxide layers containing silicon nanocrystals with 1.5-4.5 nm average size are investigated. It is found that the intensity and mean lifetime of the Er3+-ion photoluminescence depend on the nanocrystal size, optical pump intensity, and temperature. The results obtained are explained both by the effect of the local environment on Er3+ ions and by the manifestation of nonradiative deexcitation of ions caused by the transfer of energy back into the solid-state matrix and the Auger processes.