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Quantum Dot-Doped Glasses and Fibers: Fabrication and Optical Properties

“…This phenomenon was also reported in literature (Silva et al, 2003), which can be explained by the Kubo theory (Yu and Peng, 2002). The level spacing as a function of particle diameter can be expressed as follows (Kubo, 1962):…”

Optical properties of PbSe quantum dots doped in borosilicate glass

“…This composition was selected to maintain the melting temperature below 1050°C since PbSe is decomposed easily at temperatures above its melting point (1078°C) [3]. The amount of PbSe that can be dissolved in the glass appeared to be <0.2 mol%.…”

“…Quantum dots (QDs) made of lead-salt semiconductor have attracted attention due to their large Bohr radii (PbSe 46 nm, PbS 18 nm) that lead to the strong quantum confinement effect [1][2][3]. In other words, electrons and holes in lead-salt semiconductors are easily confined inside these crystals compare to the other semiconductors with small Bohr radii.…”

Novel PbSe nanocrystals doped fluorogermanate glass matrix

“…This facilitates stabilizing PbSe crystallite forming on the glass body and prevents their recurrent dissolution in the batch [21]. As a result of using covered crucible and sodium fluoride addition the well-known problem of selenium evaporation from the melts during high-temperature glass formation is easily solved for the present glass [22]. Further thermal treatment of the glass matrix was performed at 475, 500, 525 and 550 1C for 30 min.…”