Engineering of multi-photoluminescence properties for hybrid structure of metal nanoparticles/semiconductor quantum dots for bio-imaging applications

Ha Trang Nguyen; Sung Jin Kim; Ju-Hyung Yun

doi:10.1117/12.2608170

3 March 2022 Engineering of multi-photoluminescence properties for hybrid structure of metal nanoparticles/semiconductor quantum dots for bio-imaging applications

Ha Trang Nguyen, Sung Jin Kim, Ju-Hyung Yun

Author Affiliations +

Proceedings Volume 11976, Nanoscale Imaging, Sensing, and Actuation for Biomedical Applications XIX; 1197608 (2022) https://doi.org/10.1117/12.2608170
Event: SPIE BiOS, 2022, San Francisco, California, United States

Conference Poster

Abstract

The hybrid metal/quantum dots (QDs) structures were synthesized and characterized with different thicknesses of silica shells by uncomplicated and typical methods. By engineering the shell thickness and Au nanoparticles (Au NPs) core size with shapes, the interaction between Au NPs and QDs could be adjusted flexibly to witness the energy transfer process thoroughly. The improvement of the emission intensity and the reduction in the PL lifetime with the appropriate thickness of silica layer were obtained. Likewise, the energy transfer efficiency between QDs donor-acceptor pairs was inferred as the dominance of larger QDs with hybrid structures. The quenching of QDs donors and the enhancement of QDs acceptors in PL emission intensity were determined by the different core-shell structures. Finally, as-prepared metal/silica/QDs structures have been explored for bio-imaging applications, leading to enhanced light absorption and sensitivity.

Conference Presentation

Citation Download Citation

Ha Trang Nguyen, Sung Jin Kim, and Ju-Hyung Yun "Engineering of multi-photoluminescence properties for hybrid structure of metal nanoparticles/semiconductor quantum dots for bio-imaging applications", Proc. SPIE 11976, Nanoscale Imaging, Sensing, and Actuation for Biomedical Applications XIX, 1197608 (3 March 2022); https://doi.org/10.1117/12.2608170

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