Szukana fraza: [Abstrakt = "The effects of Si nanocluster \(Si\-nc\) size and of the distance between Si\-nc and Er ion on the photoluminescence of the Er3\+ ions have been investigated by means of appropriate multilayer configurations fabricated by reactive magnetron sputtering. On the one hand, the effect of Si\-nc size is studied in Er\-Si\-rich SiO2\/SiO2 multilayers. The coupling between Si\-nc and Er3\+ ions is found to be less efficient when the Si\-nc’s reach a size of 5 nm and attributed to a loss of the quantum confinement of carriers. On the other hand, the interaction distance between Si\-nc and Er ions is determined through the photoluminescence properties of Si\-rich SiO2\/Er\-SiO2 multilayers. The characteristic interaction distance Si\-nc\-Er is dependent on the nature of the sensitizers with 0.4 ± 0.1 nm for amorphous Si and 2.6 ± 0.4 nm for Si nanocrystals."]

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