Phenoxazine Derivative Operates as an Efficient Surface-Grafted Molecular Relay to Enhance the Performance and Stability of CdS- and CdSe-Sensitized TiO2 Solar Cells

We report on a new phenoxazine derivative, 10-butyl-phenoxazine-3-carboxylic acid (BPCA), that we designed to operate as a molecular relay in semiconductor-sensitized solar cells (SSCs). After BPCA surface modification and in the presence of a cobalt-bipyridyl complex acting as a redox mediator, bot...

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Main Authors: Shen, Chao, Wang, Xingzhu, Tang, Shasha, Courté, Marc, Fichou, Denis
Other Authors: School of Physical and Mathematical Sciences
Format: Article
Language:English
Published: 2017
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Online Access:https://hdl.handle.net/10356/86325
http://hdl.handle.net/10220/44004
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-863252020-03-07T12:31:29Z Phenoxazine Derivative Operates as an Efficient Surface-Grafted Molecular Relay to Enhance the Performance and Stability of CdS- and CdSe-Sensitized TiO2 Solar Cells Shen, Chao Wang, Xingzhu Tang, Shasha Courté, Marc Fichou, Denis School of Physical and Mathematical Sciences Cadmium Energy Conversion We report on a new phenoxazine derivative, 10-butyl-phenoxazine-3-carboxylic acid (BPCA), that we designed to operate as a molecular relay in semiconductor-sensitized solar cells (SSCs). After BPCA surface modification and in the presence of a cobalt-bipyridyl complex acting as a redox mediator, both TiO2/CdS/BPCA and TiO2/CdSe/BPCA SSCs exhibit enhanced photovoltaic performance and stability. In particular, the power conversion efficiencies of CdS and CdSe-based solar cells are improved by 90 % and 57 %, respectively. Furthermore, after 300 s the JSC of TiO2/CdS/BPCA SSCs is stabilized at 30 % of its initial value, while in the same time CdS-based devices retain only 1 % of their initial JSC. The origin of the improvement arises from the excellent electron-donating property of BPCA and its role as a powerful molecular relay in non-polysulfide based SSCs. MOE (Min. of Education, S’pore) NRF (Natl Research Foundation, S’pore) 2017-11-08T03:27:41Z 2019-12-06T16:20:24Z 2017-11-08T03:27:41Z 2019-12-06T16:20:24Z 2017 Journal Article Shen, C., Wang, X., Tang, S., Courté, M., & Fichou, D. (2017). Phenoxazine Derivative Operates as an Efficient Surface-Grafted Molecular Relay to Enhance the Performance and Stability of CdS- and CdSe-Sensitized TiO2 Solar Cells. ChemPhysChem, 18(10), 1302-1307. 1439-4235 https://hdl.handle.net/10356/86325 http://hdl.handle.net/10220/44004 10.1002/cphc.201700238 en ChemPhysChem © 2017 Wiley-VCH Verlag GmbH &Co. KGaA, Weinheim.
institution Nanyang Technological University
building NTU Library
country Singapore
collection DR-NTU
language English
topic Cadmium
Energy Conversion
spellingShingle Cadmium
Energy Conversion
Shen, Chao
Wang, Xingzhu
Tang, Shasha
Courté, Marc
Fichou, Denis
Phenoxazine Derivative Operates as an Efficient Surface-Grafted Molecular Relay to Enhance the Performance and Stability of CdS- and CdSe-Sensitized TiO2 Solar Cells
description We report on a new phenoxazine derivative, 10-butyl-phenoxazine-3-carboxylic acid (BPCA), that we designed to operate as a molecular relay in semiconductor-sensitized solar cells (SSCs). After BPCA surface modification and in the presence of a cobalt-bipyridyl complex acting as a redox mediator, both TiO2/CdS/BPCA and TiO2/CdSe/BPCA SSCs exhibit enhanced photovoltaic performance and stability. In particular, the power conversion efficiencies of CdS and CdSe-based solar cells are improved by 90 % and 57 %, respectively. Furthermore, after 300 s the JSC of TiO2/CdS/BPCA SSCs is stabilized at 30 % of its initial value, while in the same time CdS-based devices retain only 1 % of their initial JSC. The origin of the improvement arises from the excellent electron-donating property of BPCA and its role as a powerful molecular relay in non-polysulfide based SSCs.
author2 School of Physical and Mathematical Sciences
author_facet School of Physical and Mathematical Sciences
Shen, Chao
Wang, Xingzhu
Tang, Shasha
Courté, Marc
Fichou, Denis
format Article
author Shen, Chao
Wang, Xingzhu
Tang, Shasha
Courté, Marc
Fichou, Denis
author_sort Shen, Chao
title Phenoxazine Derivative Operates as an Efficient Surface-Grafted Molecular Relay to Enhance the Performance and Stability of CdS- and CdSe-Sensitized TiO2 Solar Cells
title_short Phenoxazine Derivative Operates as an Efficient Surface-Grafted Molecular Relay to Enhance the Performance and Stability of CdS- and CdSe-Sensitized TiO2 Solar Cells
title_full Phenoxazine Derivative Operates as an Efficient Surface-Grafted Molecular Relay to Enhance the Performance and Stability of CdS- and CdSe-Sensitized TiO2 Solar Cells
title_fullStr Phenoxazine Derivative Operates as an Efficient Surface-Grafted Molecular Relay to Enhance the Performance and Stability of CdS- and CdSe-Sensitized TiO2 Solar Cells
title_full_unstemmed Phenoxazine Derivative Operates as an Efficient Surface-Grafted Molecular Relay to Enhance the Performance and Stability of CdS- and CdSe-Sensitized TiO2 Solar Cells
title_sort phenoxazine derivative operates as an efficient surface-grafted molecular relay to enhance the performance and stability of cds- and cdse-sensitized tio2 solar cells
publishDate 2017
url https://hdl.handle.net/10356/86325
http://hdl.handle.net/10220/44004
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