Surface enhanced Raman scattering of adsorbates on Au–CsPbIBr 2 perovskite-based nanocomposites: charge-transfer and electromagnetic enhancement

Surface enhanced Raman scattering of adsorbates on Au–CsPbIBr 2 perovskite-based nanocomposites: charge-transfer and electromagnetic enhancement

In this study, perovskite-based nanocomposites as surface enhanced Raman scattering substrates were designed by physically sputtering Au nanoparticles onto fabricated all-inorganic CsPbIBr 2 perovskite films, which provide much stronger SERS signals as compared to normal Au or perovskite substrates....

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Veröffentlicht in:Nanoscale 2022-07, Vol.14 (29), p.10469-10476
Hauptverfasser: Pan, Niu, Shi, Ziqian, Wu, Pengfei, Xi, Hongyan, Gao, Yukun, You, Tingting, Yin, Penggang
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container_issue 29
container_start_page 10469
container_title Nanoscale
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creator Pan, Niu
Shi, Ziqian
Wu, Pengfei
Xi, Hongyan
Gao, Yukun
You, Tingting
Yin, Penggang
description In this study, perovskite-based nanocomposites as surface enhanced Raman scattering substrates were designed by physically sputtering Au nanoparticles onto fabricated all-inorganic CsPbIBr 2 perovskite films, which provide much stronger SERS signals as compared to normal Au or perovskite substrates. Their synergism enhancement mechanisms and influence factors, including hybrid layer sequence, fabrication parameters and excitation source, are discussed. In addition, the prepared composite substrate exhibits excellent uniformity, reproducibility and time stability. This study promotes an easily prepared perovskite-based substrate for SERS-related applications and develops further understanding of molecule-semiconductor–noble metal nanostructure interfacial interactions.
doi_str_mv 10.1039/D2NR02108K
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title Surface enhanced Raman scattering of adsorbates on Au–CsPbIBr 2 perovskite-based nanocomposites: charge-transfer and electromagnetic enhancement
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