Abstract
PbS quantum dots synthesis in boro-silicate glass is presented. Absorption bleaching of PbS quantum dots of ≈4 and ≈7nm in diameter dispersed in this glass has been studied. Bleaching relaxation time of 20–30ps, absorption saturation fluence of ≈5mJ/cm2 and ground-state absorption cross-section of 2÷6×10−17cm2 at the wavelengths corresponding to the first excitonic absorption band maxima are measured.
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