Enhanced blue light emission in transparent ZnO:PVA nanocomposite free standing polymer films

B. Karthikeyan; T. Pandiyarajan; R. V. Mangalaraja

doi:10.1016/j.saa.2015.07.053

Enhanced blue light emission in transparent ZnO:PVA nanocomposite free standing polymer films

B. Karthikeyan, T. Pandiyarajan, R. V. Mangalaraja

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

54 Scopus citations

Abstract

ZnO:PVA nanocomposite films were prepared and their fluorescence and time resolved photoluminescence properties were discussed. X-ray diffraction and infrared spectroscopy results confirmed the ZnO:PVA interaction. Optical absorption spectra showed two bands at 280 and 367 nm which were ascribed to PVA and excitonic absorption band, respectively. Fluorescence spectra showed that the blue emission of ZnO was enhanced about tenfold through chemical interface electron transfer. The electron transfer from ZnO to PVA and its decay dynamics were experimentally analyzed through time resolved fluorescence measurements. The study revealed that the excited electrons found pathway through PVA to ground state which was slower than the pure ZnO nanoparticles.

Original language	English
Pages (from-to)	485-490
Number of pages	6
Journal	Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy
Volume	152
DOIs	https://doi.org/10.1016/j.saa.2015.07.053
State	Published - 19 Aug 2016
Externally published	Yes

Keywords

Blue emission
Time resolved fluorescence
ZnO:PVA composite

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10.1016/j.saa.2015.07.053

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title = "Enhanced blue light emission in transparent ZnO:PVA nanocomposite free standing polymer films",

abstract = "ZnO:PVA nanocomposite films were prepared and their fluorescence and time resolved photoluminescence properties were discussed. X-ray diffraction and infrared spectroscopy results confirmed the ZnO:PVA interaction. Optical absorption spectra showed two bands at 280 and 367 nm which were ascribed to PVA and excitonic absorption band, respectively. Fluorescence spectra showed that the blue emission of ZnO was enhanced about tenfold through chemical interface electron transfer. The electron transfer from ZnO to PVA and its decay dynamics were experimentally analyzed through time resolved fluorescence measurements. The study revealed that the excited electrons found pathway through PVA to ground state which was slower than the pure ZnO nanoparticles.",

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T1 - Enhanced blue light emission in transparent ZnO:PVA nanocomposite free standing polymer films

AU - Karthikeyan, B.

AU - Pandiyarajan, T.

AU - Mangalaraja, R. V.

PY - 2016/8/19

Y1 - 2016/8/19

N2 - ZnO:PVA nanocomposite films were prepared and their fluorescence and time resolved photoluminescence properties were discussed. X-ray diffraction and infrared spectroscopy results confirmed the ZnO:PVA interaction. Optical absorption spectra showed two bands at 280 and 367 nm which were ascribed to PVA and excitonic absorption band, respectively. Fluorescence spectra showed that the blue emission of ZnO was enhanced about tenfold through chemical interface electron transfer. The electron transfer from ZnO to PVA and its decay dynamics were experimentally analyzed through time resolved fluorescence measurements. The study revealed that the excited electrons found pathway through PVA to ground state which was slower than the pure ZnO nanoparticles.

AB - ZnO:PVA nanocomposite films were prepared and their fluorescence and time resolved photoluminescence properties were discussed. X-ray diffraction and infrared spectroscopy results confirmed the ZnO:PVA interaction. Optical absorption spectra showed two bands at 280 and 367 nm which were ascribed to PVA and excitonic absorption band, respectively. Fluorescence spectra showed that the blue emission of ZnO was enhanced about tenfold through chemical interface electron transfer. The electron transfer from ZnO to PVA and its decay dynamics were experimentally analyzed through time resolved fluorescence measurements. The study revealed that the excited electrons found pathway through PVA to ground state which was slower than the pure ZnO nanoparticles.

KW - Blue emission

KW - Time resolved fluorescence

KW - ZnO:PVA composite

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VL - 152

SP - 485

EP - 490

JO - Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy

JF - Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy

ER -

Enhanced blue light emission in transparent ZnO:PVA nanocomposite free standing polymer films

Abstract

Keywords

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