Investigation of localized surface plasmon/grating-coupled surface plasmon enhanced photocurrent in TiO2 thin films

We fabricated plasmonic gold nanoparticle (AuNP)-TiO2 nanocomposite films and measured the photocurrent that originates from the water-splitting reaction catalyzed by the AuNP-TiO2 nanocomposite photoelectrocatalytic (PEC) electrode. The localized surface plasmon resonance (LSPR) of the gold nanopar...

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Main Authors: Nootchanat S., Ninsonti H., Baba A., Ekgasit S., Thammacharoen C., Shinbo K., Kato K., Kaneko F.
Format: Article
Language:English
Published: Royal Society of Chemistry 2014
Online Access:http://www.scopus.com/inward/record.url?eid=2-s2.0-84908154259&partnerID=40&md5=015c97b0a58fa3c1220f2856ed991ea3
http://cmuir.cmu.ac.th/handle/6653943832/37656
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Institution: Chiang Mai University
Language: English
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spelling th-cmuir.6653943832-376562014-12-09T05:56:30Z Investigation of localized surface plasmon/grating-coupled surface plasmon enhanced photocurrent in TiO2 thin films Nootchanat S. Ninsonti H. Baba A. Ekgasit S. Thammacharoen C. Shinbo K. Kato K. Kaneko F. We fabricated plasmonic gold nanoparticle (AuNP)-TiO2 nanocomposite films and measured the photocurrent that originates from the water-splitting reaction catalyzed by the AuNP-TiO2 nanocomposite photoelectrocatalytic (PEC) electrode. The localized surface plasmon resonance (LSPR) of the gold nanoparticles affected the generation of photocurrent by TiO2 upon illumination with visible light. Electrochemical impedance spectroscopy (EIS) revealed that the improvement in the photocurrent generation originates from an enhancement in electron-hole pair generation induced by the SPR of the plasmonic gold nanoparticles rather than the extension of the electron lifetime. Moreover, we introduced a novel method to enhance the photocurrent of TiO2 by a multiple plasmonic effect, i.e., LSPR of plasmonic gold nanoparticles and the grating-coupled propagating SP on a gold grating. We fabricated the AuNP-TiO2 nanocomposites on a gold-coated Blu-ray disc recordable (BD-R). The enhancement of the photocurrent due to the combination of LSPR and the grating-coupled SP was investigated. 2014-12-09T05:56:30Z 2014-12-09T05:56:30Z 2014 Article 14639076 10.1039/c4cp03885a PPCPF http://www.scopus.com/inward/record.url?eid=2-s2.0-84908154259&partnerID=40&md5=015c97b0a58fa3c1220f2856ed991ea3 http://cmuir.cmu.ac.th/handle/6653943832/37656 English Royal Society of Chemistry
institution Chiang Mai University
building Chiang Mai University Library
country Thailand
collection CMU Intellectual Repository
language English
description We fabricated plasmonic gold nanoparticle (AuNP)-TiO2 nanocomposite films and measured the photocurrent that originates from the water-splitting reaction catalyzed by the AuNP-TiO2 nanocomposite photoelectrocatalytic (PEC) electrode. The localized surface plasmon resonance (LSPR) of the gold nanoparticles affected the generation of photocurrent by TiO2 upon illumination with visible light. Electrochemical impedance spectroscopy (EIS) revealed that the improvement in the photocurrent generation originates from an enhancement in electron-hole pair generation induced by the SPR of the plasmonic gold nanoparticles rather than the extension of the electron lifetime. Moreover, we introduced a novel method to enhance the photocurrent of TiO2 by a multiple plasmonic effect, i.e., LSPR of plasmonic gold nanoparticles and the grating-coupled propagating SP on a gold grating. We fabricated the AuNP-TiO2 nanocomposites on a gold-coated Blu-ray disc recordable (BD-R). The enhancement of the photocurrent due to the combination of LSPR and the grating-coupled SP was investigated.
format Article
author Nootchanat S.
Ninsonti H.
Baba A.
Ekgasit S.
Thammacharoen C.
Shinbo K.
Kato K.
Kaneko F.
spellingShingle Nootchanat S.
Ninsonti H.
Baba A.
Ekgasit S.
Thammacharoen C.
Shinbo K.
Kato K.
Kaneko F.
Investigation of localized surface plasmon/grating-coupled surface plasmon enhanced photocurrent in TiO2 thin films
author_facet Nootchanat S.
Ninsonti H.
Baba A.
Ekgasit S.
Thammacharoen C.
Shinbo K.
Kato K.
Kaneko F.
author_sort Nootchanat S.
title Investigation of localized surface plasmon/grating-coupled surface plasmon enhanced photocurrent in TiO2 thin films
title_short Investigation of localized surface plasmon/grating-coupled surface plasmon enhanced photocurrent in TiO2 thin films
title_full Investigation of localized surface plasmon/grating-coupled surface plasmon enhanced photocurrent in TiO2 thin films
title_fullStr Investigation of localized surface plasmon/grating-coupled surface plasmon enhanced photocurrent in TiO2 thin films
title_full_unstemmed Investigation of localized surface plasmon/grating-coupled surface plasmon enhanced photocurrent in TiO2 thin films
title_sort investigation of localized surface plasmon/grating-coupled surface plasmon enhanced photocurrent in tio2 thin films
publisher Royal Society of Chemistry
publishDate 2014
url http://www.scopus.com/inward/record.url?eid=2-s2.0-84908154259&partnerID=40&md5=015c97b0a58fa3c1220f2856ed991ea3
http://cmuir.cmu.ac.th/handle/6653943832/37656
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