Tunable Photoluminescence via Thermally Evaporated ZnS Ultra Thin Films
Name
JCSTV1N1A5-Urakawa-OA.pdf
Description
Published version
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801.33 KB
Format
Adobe PDF
Checksum (MD5)
1bb9f4e4e65c6d5c5db648caa9f4cf74
Author(s)
Urakawa, Yoshifumi
Gleason, Karen K
Date Issued
June 2014
Journal
Journal of Coating Science and Technology
Publisher
Lifescience Global
Citation
Institute for Polymers and Chemicals, Business Development Center, Showa Denko K. K., Kawasaki, Kanagawa 210-0867 Japan, et al. “Tunable Photoluminescence via Thermally Evaporated ZnS Ultra Thin Films.” Journal of Coating Science and Technology 1, 1 (July 2014): 46–50.
Version
Final published version
Abstract
ZnS thin films have been deposited by thermal evaporation at various deposition rates. By controlling the deposition rate, the position of the maximum in the photoluminescence spectra could be easily tuned from 2.9 to 2.0 eV, which produced a corresponding change in the emission color. The optical and morphological characteristics of the ZnS thin films were measured. The photoluminescence spectra had broad peaks, suggesting a distribution of ZnS nanocrystallites dimensions. Nanocrystallites dimensions were in the range of 1 nm to 3 nm via TEM analyses. The changes in optical properties were potentially attributable to the lattice defects of ZnS crystals, including Schottky defects and the substation of sulfur atoms by oxygen atoms. The color of the resulting light emission was obtained by controlling the deposition rate of ZnS. Keywords: Zinc Sulfide; Thermal Evaporation; Thin Film; Photoluminescence;
Lattice Defect
MIT Department
Massachusetts Institute of Technology. Department of Chemical Engineering
Terms of Use
Creative Commons Attribution Noncommercial 3.0 unported license
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.6000/2369-3355.2014.01.01.5
