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Reduced Graphene Oxide-Laminated One-Dimensional TiO(2)–Bronze Nanowire Composite: An Efficient Photoanode Material for Dye-Sensitized Solar Cells

[Image: see text] A facile one-step hydrothermal method was developed to prepare reduced graphene oxide-laminated TiO(2)–bronze (TiO(2)-B) nanowire composites (TNWG), which contain two-dimensional graphene oxide nanosheets and TiO(2)-B nanowires. In the hydrothermal process, the functional groups of...

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Autores principales: Makal, Pronay, Das, Debajyoti
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Chemical Society 2021
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7893794/
https://www.ncbi.nlm.nih.gov/pubmed/33623847
http://dx.doi.org/10.1021/acsomega.0c05707
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author Makal, Pronay
Das, Debajyoti
author_facet Makal, Pronay
Das, Debajyoti
author_sort Makal, Pronay
collection PubMed
description [Image: see text] A facile one-step hydrothermal method was developed to prepare reduced graphene oxide-laminated TiO(2)–bronze (TiO(2)-B) nanowire composites (TNWG), which contain two-dimensional graphene oxide nanosheets and TiO(2)-B nanowires. In the hydrothermal process, the functional groups of graphene oxide were reduced significantly. Dye-sensitized solar cells (DSSCs) were fabricated using TNWG as the photoanode material. The effects of different reduced graphene oxide contents in TNWG on the energy conversion efficiency of the dye-sensitized solar cells were investigated using J–V and incident photon-to-current conversion efficiency characteristics. DSSCs based on a TNWG hybrid photoanode with a reduced graphene oxide content of 8 wt % demonstrated an overall light-to-electricity conversion efficiency of 4.95%, accompanied by a short-circuit current density of 10.41 mA cm(–2), an open-circuit voltage of 0.71 V, and a fill factor of 67%, which were much higher than those of DSSC made with a pure TiO(2)-B NW-based photoanode. The overall improvement in photovoltaic performance could be associated to the intense visible light absorption and enhanced dye adsorption because of the increased surface area of the composite, together with faster electron transport due to reduced carrier recombination.
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spelling pubmed-78937942021-02-22 Reduced Graphene Oxide-Laminated One-Dimensional TiO(2)–Bronze Nanowire Composite: An Efficient Photoanode Material for Dye-Sensitized Solar Cells Makal, Pronay Das, Debajyoti ACS Omega [Image: see text] A facile one-step hydrothermal method was developed to prepare reduced graphene oxide-laminated TiO(2)–bronze (TiO(2)-B) nanowire composites (TNWG), which contain two-dimensional graphene oxide nanosheets and TiO(2)-B nanowires. In the hydrothermal process, the functional groups of graphene oxide were reduced significantly. Dye-sensitized solar cells (DSSCs) were fabricated using TNWG as the photoanode material. The effects of different reduced graphene oxide contents in TNWG on the energy conversion efficiency of the dye-sensitized solar cells were investigated using J–V and incident photon-to-current conversion efficiency characteristics. DSSCs based on a TNWG hybrid photoanode with a reduced graphene oxide content of 8 wt % demonstrated an overall light-to-electricity conversion efficiency of 4.95%, accompanied by a short-circuit current density of 10.41 mA cm(–2), an open-circuit voltage of 0.71 V, and a fill factor of 67%, which were much higher than those of DSSC made with a pure TiO(2)-B NW-based photoanode. The overall improvement in photovoltaic performance could be associated to the intense visible light absorption and enhanced dye adsorption because of the increased surface area of the composite, together with faster electron transport due to reduced carrier recombination. American Chemical Society 2021-02-02 /pmc/articles/PMC7893794/ /pubmed/33623847 http://dx.doi.org/10.1021/acsomega.0c05707 Text en © 2021 The Authors. Published by American Chemical Society This is an open access article published under a Creative Commons Non-Commercial No Derivative Works (CC-BY-NC-ND) Attribution License (http://pubs.acs.org/page/policy/authorchoice_ccbyncnd_termsofuse.html) , which permits copying and redistribution of the article, and creation of adaptations, all for non-commercial purposes.
spellingShingle Makal, Pronay
Das, Debajyoti
Reduced Graphene Oxide-Laminated One-Dimensional TiO(2)–Bronze Nanowire Composite: An Efficient Photoanode Material for Dye-Sensitized Solar Cells
title Reduced Graphene Oxide-Laminated One-Dimensional TiO(2)–Bronze Nanowire Composite: An Efficient Photoanode Material for Dye-Sensitized Solar Cells
title_full Reduced Graphene Oxide-Laminated One-Dimensional TiO(2)–Bronze Nanowire Composite: An Efficient Photoanode Material for Dye-Sensitized Solar Cells
title_fullStr Reduced Graphene Oxide-Laminated One-Dimensional TiO(2)–Bronze Nanowire Composite: An Efficient Photoanode Material for Dye-Sensitized Solar Cells
title_full_unstemmed Reduced Graphene Oxide-Laminated One-Dimensional TiO(2)–Bronze Nanowire Composite: An Efficient Photoanode Material for Dye-Sensitized Solar Cells
title_short Reduced Graphene Oxide-Laminated One-Dimensional TiO(2)–Bronze Nanowire Composite: An Efficient Photoanode Material for Dye-Sensitized Solar Cells
title_sort reduced graphene oxide-laminated one-dimensional tio(2)–bronze nanowire composite: an efficient photoanode material for dye-sensitized solar cells
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7893794/
https://www.ncbi.nlm.nih.gov/pubmed/33623847
http://dx.doi.org/10.1021/acsomega.0c05707
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