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Optical thermometry of Sm 3+ on laser‐induced local heating for precipitation of PbS quantum dots in glasses
Author(s) -
So Byoungjin,
Heo Jong
Publication year - 2018
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/jace.15495
Subject(s) - materials science , laser , precipitation , irradiation , quantum dot , nanoparticle , surface plasmon resonance , analytical chemistry (journal) , excitation , fluorescence , optoelectronics , optics , nanotechnology , chemistry , physics , electrical engineering , engineering , chromatography , meteorology , nuclear physics
Fluorescence intensity ratios ( FIR s) of the 640 nm and 602 nm emissions from Sm 3+ were recorded at various temperatures T to identify the temperature increases Δ T associated with laser‐induced local heating of Ag nanoparticles. The FIR s increased as intensities of the excitation beam from a 532‐nm continuous‐wave laser increased. Estimated T of the irradiated region increased to as high as 586°C when at laser irradiation of 1.5 W on the surface containing Ag nanoparticles. Local heating due to the surface plasmon resonance of Ag nanoparticles is a main reason for the Δ T that eventually leads to precipitation of PbS quantum dots in glasses.