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Band Gap and Diameter Modulation of Quantum Dots in Glasses
Author(s) -
Liu Chao,
Heo Jong
Publication year - 2015
Publication title -
international journal of applied glass science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.383
H-Index - 34
eISSN - 2041-1294
pISSN - 2041-1286
DOI - 10.1111/ijag.12175
Subject(s) - photoluminescence , materials science , quantum dot , band gap , infrared , nanocrystal , optoelectronics , absorption (acoustics) , wavelength , laser , optics , nanotechnology , physics , composite material
Modulation of the band gap energy and diameter of quantum dots ( QD s) formed in glasses is important to achieve the optimized performance for applications as infrared light sources, lasers, saturable absorbers, etc. Absorption and photoluminescence of PbS QD s were extended into mid‐infrared wavelength range in glasses containing small amount of lead but oversaturated with sulfur. Dual‐band photoluminescence of PbSe QD s was prepared in oxyfluoride glass‐ceramics containing BaF 2 nanocrystals. By introducing SnO in the glasses, alloyed Pb 1‐ x S n x Se QD s with smaller band gap energies were formed in glasses, and mid‐infrared photoluminescence of Pb 1‐ x S n x Se QD s at ~2570 nm in wavelength was achieved.