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dc.contributor.authorSopit Phetsangen_US
dc.contributor.authorApichat Phengdaamen_US
dc.contributor.authorChutiparn Lertvachirapaiboonen_US
dc.contributor.authorRyousuke Ishikawaen_US
dc.contributor.authorKazunari Shinboen_US
dc.contributor.authorKeizo Katoen_US
dc.contributor.authorPitchaya Mungkornasawakulen_US
dc.contributor.authorKontad Ounnunkaden_US
dc.contributor.authorAkira Babaen_US
dc.description.abstract© 2019 The Royal Society of Chemistry. Light management allows enhancement of light harvesting in organic solar cells (OSCs). In this paper, we describe the investigation of OSCs enhanced by the synergistic effect of gold quantum dots (AuQDs) and localized surface plasmons, obtained by blending a AuQD layer and plasmonic gold nanoparticles (AuNPs) in a hole-transport layer (HTL). Different AuQDs emitting blue, green, and red fluorescence were examined in this study. The OSCs were demonstrated to comprise an ITO-coated glass substrate/AuQDs/PEDOT:PSS:AuNPs/P3HT:PCBM/Al structure. The UV-visible spectra, current density versus voltage characteristics, impedance spectra, and incident photon-to-current efficiency of the fabricated devices were evaluated. The results showed an enhancement of photovoltaic efficiency achieved as a result of the increase in short-circuit current density (Jsc) and power conversion efficiency (PCE) in comparison with those of the reference OSCs. The best synergistic effect was found with OSCs consisting of a green-emitting AuQD layer and a HTL containing AuNPs, resulting in the highest improvement in PCE of 13.0%. This indicated that the increase in light harvesting in the developed devices was induced by extended light absorption in the UV region resulting from absorption by the AuQD layer and emission of visible fluorescence from the AuQD layer to the photoactive layers. Moreover, the localized surface plasmon effect of AuNPs, which also contributed to an increase in light trapping in the proposed OSCs, was enhanced by the effect of the AuQDs.en_US
dc.subjectChemical Engineeringen_US
dc.subjectMaterials Scienceen_US
dc.subjectPhysics and Astronomyen_US
dc.titleInvestigation of a gold quantum dot/plasmonic gold nanoparticle system for improvement of organic solar cellsen_US
article.title.sourcetitleNanoscale Advancesen_US
article.volume1en_US Universityen_US of Songkla Universityen_US Mai Universityen_US
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