Photon-induced formation of CdS nanocrystals in selected areas of polymer matrices

Athanassia Athanassiou, Roberto Cingolani, Elsa Tsiranidou, Costas Fotakis, Anna Maria Laera, Emanuela Piscopiello, Leander Tapfer

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Abstract

We demonstrate light-induced formation of semiconductor quantum dots in TOPAS polymer matrix with very high control of their size and their spatial localization. Irradiation with UV laser pulses of polymer films embedding Cd thiolate precursors results in the formation of cadmium sulfide nanocrystals well confined in the irradiation area, through a macroscopically nondestructive procedure for the host matrix. With increasing number of laser pulses, we accomplish the formation of nanoparticles with gradually increasing dimensions, resulting in the dynamic change of the spectra emitted by the formed nanocomposite areas. The findings are supported by x-ray diffraction and transmission electron microscopy measurements. © 2007 American Institute of Physics.
Original languageEnglish
Article number153108
Pages (from-to)-
JournalApplied Physics Letters
Volume91
Issue number15
DOIs
Publication statusPublished - 2007
Externally publishedYes

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All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

Cite this

Athanassiou, A., Cingolani, R., Tsiranidou, E., Fotakis, C., Laera, A. M., Piscopiello, E., & Tapfer, L. (2007). Photon-induced formation of CdS nanocrystals in selected areas of polymer matrices. Applied Physics Letters, 91(15), -. [153108]. https://doi.org/10.1063/1.2790484