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Lead selenide quantum dots (QDs) were precipitated in germanosilicate glasses to investigate the effect of GeO2 content on the precipitation and optical properties. The absorption and photoluminescence (PL) bands red-shifted strongly as GeO2 concentration increased. After heat-treatment at 470°C for 10h, the first excitonic absorption bands red-shifted from 801nm to 2593nm as GeO2 content increased...
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