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Functionalized rGO Interlayers Improve the Fill Factor and Current Density in PbS QDs-Based Solar Cells

Graphene-quantum dot nanocomposites attract significant attention for novel optoelectronic devices, such as ultrafast photodetectors and third-generation solar cells. Combining the remarkable optical properties of quantum dots (QDs) with the exceptional electrical properties of graphene derivatives...

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Autores principales: Babaev, Anton A., Parfenov, Peter S., Onishchuk, Dmitry A., Dubavik, Aliaksei, Cherevkov, Sergei A., Rybin, Andrei V., Baranov, Mikhail A., Baranov, Alexander V., Litvin, Aleksandr P., Fedorov, Anatoly V.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6947317/
https://www.ncbi.nlm.nih.gov/pubmed/31888184
http://dx.doi.org/10.3390/ma12244221
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author Babaev, Anton A.
Parfenov, Peter S.
Onishchuk, Dmitry A.
Dubavik, Aliaksei
Cherevkov, Sergei A.
Rybin, Andrei V.
Baranov, Mikhail A.
Baranov, Alexander V.
Litvin, Aleksandr P.
Fedorov, Anatoly V.
author_facet Babaev, Anton A.
Parfenov, Peter S.
Onishchuk, Dmitry A.
Dubavik, Aliaksei
Cherevkov, Sergei A.
Rybin, Andrei V.
Baranov, Mikhail A.
Baranov, Alexander V.
Litvin, Aleksandr P.
Fedorov, Anatoly V.
author_sort Babaev, Anton A.
collection PubMed
description Graphene-quantum dot nanocomposites attract significant attention for novel optoelectronic devices, such as ultrafast photodetectors and third-generation solar cells. Combining the remarkable optical properties of quantum dots (QDs) with the exceptional electrical properties of graphene derivatives opens a vast perspective for further growth in solar cell efficiency. Here, we applied (3-mercaptopropyl) trimethoxysilane functionalized reduced graphene oxide (f-rGO) to improve the QDs-based solar cell active layer. The different strategies of f-rGO embedding are explored. When f-rGO interlayers are inserted between PbS QD layers, the solar cells demonstrate a higher current density and a better fill factor. A combined study of the morphological and electrical parameters of the solar cells shows that the improved efficiency is associated with better layer homogeneity, lower trap-state densities, higher charge carrier concentrations, and the blocking of the minor charge carriers.
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spelling pubmed-69473172020-01-13 Functionalized rGO Interlayers Improve the Fill Factor and Current Density in PbS QDs-Based Solar Cells Babaev, Anton A. Parfenov, Peter S. Onishchuk, Dmitry A. Dubavik, Aliaksei Cherevkov, Sergei A. Rybin, Andrei V. Baranov, Mikhail A. Baranov, Alexander V. Litvin, Aleksandr P. Fedorov, Anatoly V. Materials (Basel) Article Graphene-quantum dot nanocomposites attract significant attention for novel optoelectronic devices, such as ultrafast photodetectors and third-generation solar cells. Combining the remarkable optical properties of quantum dots (QDs) with the exceptional electrical properties of graphene derivatives opens a vast perspective for further growth in solar cell efficiency. Here, we applied (3-mercaptopropyl) trimethoxysilane functionalized reduced graphene oxide (f-rGO) to improve the QDs-based solar cell active layer. The different strategies of f-rGO embedding are explored. When f-rGO interlayers are inserted between PbS QD layers, the solar cells demonstrate a higher current density and a better fill factor. A combined study of the morphological and electrical parameters of the solar cells shows that the improved efficiency is associated with better layer homogeneity, lower trap-state densities, higher charge carrier concentrations, and the blocking of the minor charge carriers. MDPI 2019-12-16 /pmc/articles/PMC6947317/ /pubmed/31888184 http://dx.doi.org/10.3390/ma12244221 Text en © 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Babaev, Anton A.
Parfenov, Peter S.
Onishchuk, Dmitry A.
Dubavik, Aliaksei
Cherevkov, Sergei A.
Rybin, Andrei V.
Baranov, Mikhail A.
Baranov, Alexander V.
Litvin, Aleksandr P.
Fedorov, Anatoly V.
Functionalized rGO Interlayers Improve the Fill Factor and Current Density in PbS QDs-Based Solar Cells
title Functionalized rGO Interlayers Improve the Fill Factor and Current Density in PbS QDs-Based Solar Cells
title_full Functionalized rGO Interlayers Improve the Fill Factor and Current Density in PbS QDs-Based Solar Cells
title_fullStr Functionalized rGO Interlayers Improve the Fill Factor and Current Density in PbS QDs-Based Solar Cells
title_full_unstemmed Functionalized rGO Interlayers Improve the Fill Factor and Current Density in PbS QDs-Based Solar Cells
title_short Functionalized rGO Interlayers Improve the Fill Factor and Current Density in PbS QDs-Based Solar Cells
title_sort functionalized rgo interlayers improve the fill factor and current density in pbs qds-based solar cells
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6947317/
https://www.ncbi.nlm.nih.gov/pubmed/31888184
http://dx.doi.org/10.3390/ma12244221
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