Thin Layer of Semiconductor Plasmonic Nanocrystals for the Enhancement of NIR Fluorophores

Semiconductor plasmonic nanocrystals (PNCs) are a novel class of materials for near-infrared (NIR) plasmonics possessing strong and tunable localized surface plasmon resonances (LSPRs). In this work, we used PNCs to fabricate an active substrate for the enhancement of optical responses from near-inf...

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Published in:Journal of physical chemistry. C 2018-09, Vol.122 (35), p.20469-20475
Main Authors: Litvin, Aleksandr P, Cherevkov, Sergei A, Dubavik, Aliaksei, Babaev, Anton A, Parfenov, Peter S, Simões Gamboa, Ana L, Fedorov, Anatoly V, Baranov, Alexander V
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cited_by cdi_FETCH-LOGICAL-a280t-c58d201051fbfbc0a88a0adad6aaa1a90862fd4008a8a4bb58ddbf3aafd792123
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container_end_page 20475
container_issue 35
container_start_page 20469
container_title Journal of physical chemistry. C
container_volume 122
creator Litvin, Aleksandr P
Cherevkov, Sergei A
Dubavik, Aliaksei
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Simões Gamboa, Ana L
Fedorov, Anatoly V
Baranov, Alexander V
description Semiconductor plasmonic nanocrystals (PNCs) are a novel class of materials for near-infrared (NIR) plasmonics possessing strong and tunable localized surface plasmon resonances (LSPRs). In this work, we used PNCs to fabricate an active substrate for the enhancement of optical responses from near-infrared emitters: a thin film of PNCs in poly­(vinyl alcohol). This film supports LSPR and can be utilized to enhance the optical absorption, emission, and scattering in the NIR spectral region. PbS quantum dots deposited onto the fabricated active substrate demonstrate a 3-fold amplification of the integrated photoluminescence (PL) intensity. The possible mechanisms leading to the change in the PL parameters are discussed.
doi_str_mv 10.1021/acs.jpcc.8b06059
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title Thin Layer of Semiconductor Plasmonic Nanocrystals for the Enhancement of NIR Fluorophores
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