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Title: Controlled Precipitation of Lead Sulfide Quantum Dots in Glasses Using the Femtosecond Laser Pulses.
Authors: Chao Liu; Yong Kon Kwon; Jong Heo; Bok Hyeon Kim; Ik-bu Sohn
Abstract: We report the controlled precipitation of PbS quantum dots (QDs) in glasses using multiple irradiation of the femtosecond laser pulses followed by thermal treatment. Upon the irradiation of femtosecond laser, PbS QDs were found to preferentially precipitate in the irradiated area after thermal treatment. Photoluminescence spectra showed PbS QDs in the irradiated area emitted at the long wavelength side, and transmission electron microscope images also confirmed that PbS QDs formed in the irradiated area were larger than those formed in the nonirradiated area. This controlled precipitation of PbS QDs can lead to the development of advanced optical materials.
Subjects: LEAD sulfide; GLASS; QUANTUM dots; PRECIPITATION (Chemistry); TRANSMISSION electron microscopes; FEMTOSECOND lasers; THERMAL analysis; SPECTRUM analysis; OPTICAL materials
Publication: Journal of the American Ceramic Society, 2010, Vol 93, Issue 5, p1221
ISSN: 0002-7820
Publication type: Academic Journal
DOI: 10.1111/j.1551-2916.2009.03520.x

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Controlled Precipitation of Lead Sulfide Quantum Dots in Glasses Using the Femtosecond Laser Pulses.