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Incorporation of a Metal Oxide Interlayer using a Virus-Templated Assembly for Synthesis of Graphene-Electrode-Based Organic Photovoltaics

Authors
Lee Y.M.[Lee Y.M.]Kim W.[Kim W.]Kim Y.H.[Kim Y.H.]Kim J.K.[Kim J.K.]Jang J.-R.[Jang J.-R.]Choe W.-S.[Choe W.-S.]Park J.H.[Park J.H.]Yoo P.J.[Yoo P.J.]
Issue Date
2015
Keywords
graphene; hole-transport layer; organic photovoltaics; template synthesis; viruses
Citation
ChemSusChem, v.8, no.14, pp.2385 - 2391
Journal Title
ChemSusChem
Volume
8
Number
14
Start Page
2385
End Page
2391
URI
https://scholarworks.bwise.kr/skku/handle/2021.sw.skku/49559
DOI
10.1002/cssc.201403487
Abstract
Transition metal oxide (TMO) thin films have been exploited as interlayers for charge extraction between electrodes and active layers in organic photovoltaic (OPV) devices. Additionally, graphene-electrode-based OPVs have received considerable attention as a means to enhance device stability. However, the film deposition process of a TMO thin-film layer onto the graphene electrode is highly restricted owing to the hydrophobic nature of the graphene surface; thus, the preparation of the device should rely on a vacuum process that is incompatible with solution processing. In this study, we present a novel means for creating a thin tungsten oxide (WO<inf>3</inf>) interlayer on a graphene electrode by employing an engineered biotemplate of M13 viruses, whereby nondestructive functionalization of the graphene and uniform synthesis of a WO<inf>3</inf> thin interlayer are concurrently achieved. As a result, the incorporated viruslated WO<inf>3</inf> interlayer exhibited solar-conversion efficiency that was 20% higher than that of conventional OPVs based on the use of a (3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) interlayer. Notably, bilayer-structured OPVs with synergistically integrated WO<inf>3</inf>/PEDOT:PSS achieved >60% enhancement in device performance. Virus scan: The synthesis and incorporation of a WO<inf>3</inf> interlayer into graphene-electrode-based organic photovoltaic (OPV) devices is developed by using an engineered biotemplate of M13 viruses. Owing to uniform deposition of the WO<inf>3</inf> layer and maintenance of the electrical properties of the graphene electrode, a remarkable increase in the photoconversion efficiency (>20%) relative to that of conventional OPVs can be obtained. © 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
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Graduate School > SKKU Advanced Institute of Nano Technology > 1. Journal Articles
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