One-step synthesized CuS and MWCNTs composite as a highly efficient counter electrode for quantum dot sensitized solar cells

One-step synthesized CuS and MWCNTs composite as a highly efficient counter electrode for quantum dot sensitized solar cells

CuS/MWCNTs counter electrode (CE) in high efficiency and stability is designed that CuS nanoparticles are grown on multi-wall carbon nanotubes (MWCNTs) in solutions to form CuS and MWCNTs composite in treelike structure that dispersed MWCNTs as branches support CuS nano-particles. The quantum dot se...

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Main Authors: Yinan Zhang, Di Wang, Qiming Wang, Wei Zheng
Format: Article
Language:English
Published: Elsevier 2018-12-01
Series:Materials & Design
Online Access:http://www.sciencedirect.com/science/article/pii/S0264127518307779
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spelling doaj-d61c79ee1c4f4bcbab191b95831d6e1c2020-11-24T22:10:08ZengElsevierMaterials & Design0264-12752018-12-01160870875One-step synthesized CuS and MWCNTs composite as a highly efficient counter electrode for quantum dot sensitized solar cellsYinan Zhang0Di Wang1Qiming Wang2Wei Zheng3School of Material Science and Engineering, Harbin University of Science and Technology, Harbin 150040, ChinaSchool of Material Science and Engineering, Harbin University of Science and Technology, Harbin 150040, ChinaSchool of Material Science and Engineering, Harbin University of Science and Technology, Harbin 150040, ChinaSchool of Material Science and Engineering, Harbin University of Science and Technology, Harbin 150040, China; Centre énergie Matériaux et Télécommunications, Institut National de la Recherche Scientifique, QC J3X1S2, Canada; Corresponding author at: School of Material Science and Engineering, Harbin University of Science and Technology, Harbin 150040, China.CuS/MWCNTs counter electrode (CE) in high efficiency and stability is designed that CuS nanoparticles are grown on multi-wall carbon nanotubes (MWCNTs) in solutions to form CuS and MWCNTs composite in treelike structure that dispersed MWCNTs as branches support CuS nano-particles. The quantum dot sensitized solar cells (QDSCs) are assembled with CuS/MWCNT CE prepared with above composite, CdS and ZnS sensitized TiO2/RGO (reduced graphene oxide) photoanode and polysulfide electrolyte. The electrocatalytic activity of CEs can be analyzed through Nyquist curves and Tafel curves and typical photovoltaic parameters of QDSCs based on different CEs are obtained from J-V curves. CuS nanoparticles aggregate more severely with increase of CuS mass percentage according to TEM images and 100% CuS/MWCNTs CE within all samples exhibits the highest electrocatalytic activity and the power conversion efficiency (PCE) of QDSCs. Besides that, CuS/MWCNT CE exhibits the best photovoltaic stability. PCE of QDSCs with 100% CuS/MWCNTs CE decreases only 3%(from 5.254% to 5.086%) after 24 h illumination. Keywords: CuS/MWCNT CEs, QDSCs, PCE, Electrocatalytic activity, Photovoltaic stabilityhttp://www.sciencedirect.com/science/article/pii/S0264127518307779
collection DOAJ
language English
format Article
sources DOAJ
author Yinan Zhang
Di Wang
Qiming Wang
Wei Zheng
spellingShingle Yinan Zhang
Di Wang
Qiming Wang
Wei Zheng
One-step synthesized CuS and MWCNTs composite as a highly efficient counter electrode for quantum dot sensitized solar cells
Materials & Design
author_facet Yinan Zhang
Di Wang
Qiming Wang
Wei Zheng
author_sort Yinan Zhang
title One-step synthesized CuS and MWCNTs composite as a highly efficient counter electrode for quantum dot sensitized solar cells
title_short One-step synthesized CuS and MWCNTs composite as a highly efficient counter electrode for quantum dot sensitized solar cells
title_full One-step synthesized CuS and MWCNTs composite as a highly efficient counter electrode for quantum dot sensitized solar cells
title_fullStr One-step synthesized CuS and MWCNTs composite as a highly efficient counter electrode for quantum dot sensitized solar cells
title_full_unstemmed One-step synthesized CuS and MWCNTs composite as a highly efficient counter electrode for quantum dot sensitized solar cells
title_sort one-step synthesized cus and mwcnts composite as a highly efficient counter electrode for quantum dot sensitized solar cells
publisher Elsevier
series Materials & Design
issn 0264-1275
publishDate 2018-12-01
description CuS/MWCNTs counter electrode (CE) in high efficiency and stability is designed that CuS nanoparticles are grown on multi-wall carbon nanotubes (MWCNTs) in solutions to form CuS and MWCNTs composite in treelike structure that dispersed MWCNTs as branches support CuS nano-particles. The quantum dot sensitized solar cells (QDSCs) are assembled with CuS/MWCNT CE prepared with above composite, CdS and ZnS sensitized TiO2/RGO (reduced graphene oxide) photoanode and polysulfide electrolyte. The electrocatalytic activity of CEs can be analyzed through Nyquist curves and Tafel curves and typical photovoltaic parameters of QDSCs based on different CEs are obtained from J-V curves. CuS nanoparticles aggregate more severely with increase of CuS mass percentage according to TEM images and 100% CuS/MWCNTs CE within all samples exhibits the highest electrocatalytic activity and the power conversion efficiency (PCE) of QDSCs. Besides that, CuS/MWCNT CE exhibits the best photovoltaic stability. PCE of QDSCs with 100% CuS/MWCNTs CE decreases only 3%(from 5.254% to 5.086%) after 24 h illumination. Keywords: CuS/MWCNT CEs, QDSCs, PCE, Electrocatalytic activity, Photovoltaic stability
url http://www.sciencedirect.com/science/article/pii/S0264127518307779
work_keys_str_mv AT yinanzhang onestepsynthesizedcusandmwcntscompositeasahighlyefficientcounterelectrodeforquantumdotsensitizedsolarcells
AT diwang onestepsynthesizedcusandmwcntscompositeasahighlyefficientcounterelectrodeforquantumdotsensitizedsolarcells
AT qimingwang onestepsynthesizedcusandmwcntscompositeasahighlyefficientcounterelectrodeforquantumdotsensitizedsolarcells
AT weizheng onestepsynthesizedcusandmwcntscompositeasahighlyefficientcounterelectrodeforquantumdotsensitizedsolarcells
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