期刊
OPTICAL MATERIALS
卷 65, 期 -, 页码 124-128出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.optmat.2016.09.033
关键词
Quantum dots; PbS; PbSe; Luminescence; Fluorine-phosphate glasses
资金
- Ministry of Education and Science of the Russian Federation [RFMEFI58715X0012]
Optical properties of the PbS/PbSe molecular clusters (MCs) and PbS/PbSe quantum dots (QDs) in fluorine phosphate glasses were studied. Luminescence of MCs (excited by UV radiation) was obtained in visible spectral region and it's absolute quantum yield was up to 10%. It was found, that PbS QDs with sizes 3 nm, 3.5 nm and 4.9 nm demonstrate strong luminescence at 970, 1300 and 1500 nm with Stokes shift 80 -50 meV. PbSe QDs with sizes 2.5, 2.6, 3.0, 3,7 and 5.1 nm have strong luminescence at 1050, 1100, 1300, 1500 and 1650 nm with Stokes shift 355-60 meV. Glasses doped with PbS(Se) QDs provide potential as robust materials for broadband optic amplifiers. (C) 2016 Elsevier B.V. All rights reserved.
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