Enhanced ultraviolet emission from poly(vinyl alcohol) ZnO nanoparticles using a SiO2-Au core/shell structure

Dali Shao; Hongtao Sun; Mingpeng Yu; Jie Lian; Shayla Sawyer

doi:10.1021/nl3031955

Enhanced ultraviolet emission from poly(vinyl alcohol) ZnO nanoparticles using a SiO₂-Au core/shell structure

Dali Shao, Hongtao Sun, Mingpeng Yu, Jie Lian, Shayla Sawyer

John and Willie Leone Department of Energy & Mineral Engineering (EME)

Research output: Contribution to journal › Article › peer-review

51 Scopus citations

Abstract

Enhanced near band gap edge (NBE) emissions of PVA-ZnO nanoparticles were achieved by employing SiO₂-Au core/shell nanostructures whereas the defect-level emission (DLE) is greatly suppressed. A maximum enhancement of nearly 400% was observed using SiO₂-Au for the emission with optical resonance at 554 nm. SiO₂-Au core/shell nanostructures also show a superior tunability of resonance energy as compared to that of the pure metal nanoparticles. The enhancement of the NBE emission and suppressed DLE is ascribed to the transfer of the energetic electrons excited by surface plasmon from metal nanoparticles to the conduction band of ZnO nanoparticles.

Original language	English (US)
Pages (from-to)	5840-5844
Number of pages	5
Journal	Nano letters
Volume	12
Issue number	11
DOIs	https://doi.org/10.1021/nl3031955
State	Published - Nov 14 2012

All Science Journal Classification (ASJC) codes

Bioengineering
Chemistry(all)
Materials Science(all)
Condensed Matter Physics
Mechanical Engineering

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abstract = "Enhanced near band gap edge (NBE) emissions of PVA-ZnO nanoparticles were achieved by employing SiO2-Au core/shell nanostructures whereas the defect-level emission (DLE) is greatly suppressed. A maximum enhancement of nearly 400% was observed using SiO2-Au for the emission with optical resonance at 554 nm. SiO2-Au core/shell nanostructures also show a superior tunability of resonance energy as compared to that of the pure metal nanoparticles. The enhancement of the NBE emission and suppressed DLE is ascribed to the transfer of the energetic electrons excited by surface plasmon from metal nanoparticles to the conduction band of ZnO nanoparticles.",

author = "Dali Shao and Hongtao Sun and Mingpeng Yu and Jie Lian and Shayla Sawyer",

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T1 - Enhanced ultraviolet emission from poly(vinyl alcohol) ZnO nanoparticles using a SiO2-Au core/shell structure

AU - Shao, Dali

AU - Sun, Hongtao

AU - Yu, Mingpeng

AU - Lian, Jie

AU - Sawyer, Shayla

PY - 2012/11/14

Y1 - 2012/11/14

N2 - Enhanced near band gap edge (NBE) emissions of PVA-ZnO nanoparticles were achieved by employing SiO2-Au core/shell nanostructures whereas the defect-level emission (DLE) is greatly suppressed. A maximum enhancement of nearly 400% was observed using SiO2-Au for the emission with optical resonance at 554 nm. SiO2-Au core/shell nanostructures also show a superior tunability of resonance energy as compared to that of the pure metal nanoparticles. The enhancement of the NBE emission and suppressed DLE is ascribed to the transfer of the energetic electrons excited by surface plasmon from metal nanoparticles to the conduction band of ZnO nanoparticles.

AB - Enhanced near band gap edge (NBE) emissions of PVA-ZnO nanoparticles were achieved by employing SiO2-Au core/shell nanostructures whereas the defect-level emission (DLE) is greatly suppressed. A maximum enhancement of nearly 400% was observed using SiO2-Au for the emission with optical resonance at 554 nm. SiO2-Au core/shell nanostructures also show a superior tunability of resonance energy as compared to that of the pure metal nanoparticles. The enhancement of the NBE emission and suppressed DLE is ascribed to the transfer of the energetic electrons excited by surface plasmon from metal nanoparticles to the conduction band of ZnO nanoparticles.

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Enhanced ultraviolet emission from poly(vinyl alcohol) ZnO nanoparticles using a SiO₂-Au core/shell structure

Abstract

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