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Photoluminescent nanocomposite materials based on SBMA copolymer and CdS

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dc.contributor.author IOVU, M.
dc.contributor.author ENACHESCU, M.
dc.contributor.author CULEAC, I.
dc.contributor.author VERLAN, V.
dc.contributor.author ROBU, S.
dc.contributor.author BOJIN, D.
dc.contributor.author NISTOR, Iu.
dc.contributor.author COJOCARU, I.
dc.date.accessioned 2021-08-21T10:58:06Z
dc.date.available 2021-08-21T10:58:06Z
dc.date.issued 2015
dc.identifier.citation IOVU, M., ENACHESCU, M., CULEAC, I. et al. Photoluminescent nanocomposite materials based on SBMA copolymer and CdS. In: Advanced Topics in Optoelectronics, Microelectronics, and Nanotechnologies VII: proc. of SPIE, 21-24 Aug. 2015, Constanta, Romania, 2015, V. 9258, pp. 113-119. en_US
dc.identifier.uri https://doi.org/10.1117/12.2070442
dc.identifier.uri http://repository.utm.md/handle/5014/16791
dc.description Acces full text: https://doi.org/10.1117/12.2070442 en_US
dc.description.abstract We present experimental results on copolymer-based nanocomposite made of styrene with butyl methacrylate (SBMA) (1:1) and inorganic semiconductor CdS. Thin film composite samples have been characterized by UV-Vis absorption and photoluminescent spectroscopy, as well as by transmission electron microscopy. Transmission electron microscope (TEM) examination confirms a relatively narrow distribution of CdS nanoclusters in the SBMA matrix, which covers the range 2-10 nm. On the other side, the average CdS particles size estimated from the position of first excitonic peak in the UV-Vis absorption spectrum was found to be 2.8 nm and 4.4 nm for two samples with different duration of thermal treatment, which is in good agreement with photoluminescence (PL) experimental data. The PL spectrum for CdS nanocrystals is dominated by near-band-edge emission. The relatively narrow line width (40-45 nm) of the main PL band suggests the nanoparticles having narrow size distribution. On the other side, relatively low PL emission from surface trap states at longer wavelengths were observed in the region 500-750 nm indicating on recombination on defects. en_US
dc.language.iso en en_US
dc.publisher SPIE en_US
dc.rights Attribution-NonCommercial-NoDerivs 3.0 United States *
dc.rights.uri http://creativecommons.org/licenses/by-nc-nd/3.0/us/ *
dc.subject copolymers en_US
dc.subject nanocomposites en_US
dc.subject photoluminescence en_US
dc.subject excitons en_US
dc.title Photoluminescent nanocomposite materials based on SBMA copolymer and CdS en_US
dc.type Article en_US


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