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Journal of Materials Science
Erschienen in: Journal of Materials Science 11/2019

04.03.2019 | Electronic materials

Optical nonlinear enhancement through interaction between Ag nanoparticles and CdSe quantum dots

verfasst von: Jia Qu, Donghui Jiang, Lili Wang, Kun Liu, Xin Xu, Chengbao Yao, Wenjun Sun

Erschienen in: Journal of Materials Science | Ausgabe 11/2019

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Abstract

The CdSe/Al2O3/Ag composite films were prepared on quartz glass substrate by magnetron sputtering and spin coating with the CdSe oily quantum dots. The absorption experiments and analysis results show that all of the CdSe quantum dots, Ag films, and Al2O3 contribute to the absorption peak, and the absorption peak of the CdSe/Al2O3/Ag composite films shifts to the ultraviolet region (356 nm). The transmission TZ-scan results illustrate that the nonlinear absorption effect of the CdSe/Al2O3/Ag composite films exhibits reverse-saturated absorption characteristic, and the third-order nonlinear refractive index of the CdSe/Al2O3/Ag composite films is approximately 105 times greater than that of the CdSe quantum dots. With the increase in the CdSe quantum dots concentration, the nonlinear absorption and refraction properties of the CdSe/Al2O3/Ag composite films are enhanced. However, the nonlinear absorption and refractive index of the CdSe/Al2O3/Ag composite films decrease with the increase in sputtering power of Ag. The reverse-saturated absorption characteristic is explained by the three-level system. The composite films could be applied to new optical control fields, for example, optical phase recovery.
Vorheriger Artikel Highly elastic and ultrathin nanopaper-based nanocomposites with superior electric and thermal characteristics
Nächster Artikel Upconversion fluorescence enhancement of NaYF4:Yb/Re nanoparticles by coupling with SiO2 opal photonic crystals

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Metadaten
Titel
Optical nonlinear enhancement through interaction between Ag nanoparticles and CdSe quantum dots
verfasst von
Jia Qu
Donghui Jiang
Lili Wang
Kun Liu
Xin Xu
Chengbao Yao
Wenjun Sun
Publikationsdatum
04.03.2019
Verlag
Springer US
Erschienen in
Journal of Materials Science / Ausgabe 11/2019
Print ISSN: 0022-2461
Elektronische ISSN: 1573-4803
DOI
https://doi.org/10.1007/s10853-019-03487-8

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