Optical and luminescent properties of CdSe/ZnS and TiO[sub]2[/sub] semiconductor quantum dots embedded into PMMA layers

Hung-Ju Lin; Yu-Jen Chen; Judikael Le-Rouzo; Alexandre Merlen; Waldir Avansi Jr.; Sheng-Hui Chen; François Flory; Cheng-Chung Lee; Valmor Roberto Mastelaro

doi:10.1117/12.929268

17 October 2012 Optical and luminescent properties of CdSe/ZnS and TiO₂ semiconductor quantum dots embedded into PMMA layers

Hung-Ju Lin, Yu-Jen Chen, Judikael Le-Rouzo, Alexandre Merlen, Waldir Avansi Jr., Sheng-Hui Chen, François Flory, Cheng-Chung Lee, Valmor Roberto Mastelaro

Author Affiliations +

Proceedings Volume 8465, Nanostructured Thin Films V; 846510 (2012) https://doi.org/10.1117/12.929268
Event: SPIE NanoScience + Engineering, 2012, San Diego, California, United States

Abstract

Optical quality PMMA thin film layers including different concentrations of 3nm CdSe/ZnS and 5 nm TiO2 semiconductor quantum dots have been made by spin coating method. Their optical properties show evident consequences of the confinement effects with wavelength bandgap shifting for both types of QDs. The confinement effects are more pronounced for CdSe/ZnS QDs than for TiO2 QDs. Layers including CdSe/ZnS QDs exhibit a strong luminescent behavior centred on 560nm with a stock-shift in front of the first exciton absorption peak.

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Hung-Ju Lin, Yu-Jen Chen, Judikael Le-Rouzo, Alexandre Merlen, Waldir Avansi Jr., Sheng-Hui Chen, François Flory, Cheng-Chung Lee, and Valmor Roberto Mastelaro "Optical and luminescent properties of CdSe/ZnS and TiO₂ semiconductor quantum dots embedded into PMMA layers", Proc. SPIE 8465, Nanostructured Thin Films V, 846510 (17 October 2012); https://doi.org/10.1117/12.929268

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