Please use this identifier to cite or link to this item:
https://hdl.handle.net/10216/103662
Author(s): | Rui Cruz David Alfredo Pacheco Tanaka Adélio Mendes |
Title: | Reduced graphene oxide films as transparent counter-electrodes for dye-sensitized solar cells |
Issue Date: | 2012 |
Abstract: | Stand-alone graphene-based films were prepared from graphene oxide (GO) nanoplatelets and their use as counter-electrodes (CEs) indye-sensitized solar cells (DSCs) was investigated. The graphene-based CEs were produced by spray deposition of GO and chemicallyreduced GO, followed by thermal annealing under an inert atmosphere. These GO-based CEs were shown to have similar transparencyas a reference CE made of Pt. Consistent with impedance data from symmetrical half-cells, DSCs assembled with such GO-based CEsexhibited relative efficiencies of ca. 75% comparatively to the reference Pt CE. The possibility of obtaining transparent (transmittancehigher than 80%) and reasonable catalytic films for DSCs (energy conversion efficiency of 2.64%) from GO nanoplatelets was demonstrated.The need for reduction of the graphene oxide nanoplatelets prior to deposition was not observed, allowing for a simplified CEmanufacturing process. However, further work is still needed to equal or surpass the performance of Pt CEs. |
Subject: | Engenharia química Chemical engineering |
Scientific areas: | Ciências da engenharia e tecnologias::Engenharia química Engineering and technology::Chemical engineering |
URI: | https://repositorio-aberto.up.pt/handle/10216/103662 |
Related Information: | info:eu-repo/grantAgreement/Agência de Inovação, S.A./Projectos de I&DT em Co-Promoção/SI IDT - 3423/2008/Desenvolvimento de um sistema inovador de selagem e montagem de DSC/SolarSel |
Document Type: | Artigo em Revista Científica Internacional |
Rights: | restrictedAccess |
Appears in Collections: | FEUP - Artigo em Revista Científica Internacional |
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68654.pdf Restricted Access | Artigo original publicado | 857.46 kB | Adobe PDF | Request a copy from the Author(s) |
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