On the addition of conducting ceramic nanoparticles in solvent-free ionic liquid electrolyte for dye-sensitized solar cells

Handle URI:
http://hdl.handle.net/10754/599045
Title:
On the addition of conducting ceramic nanoparticles in solvent-free ionic liquid electrolyte for dye-sensitized solar cells
Authors:
Lee, Chuan-Pei; Lee, Kun-Mu; Chen, Po-Yen; Ho, Kuo-Chuan
Abstract:
Titanium carbide (TiC) is an extremely hard conducting ceramic material often used as a coating for titanium alloys as well as steel and aluminum components to improve their surface properties. In this study, conducting ceramic nanoparticles (CCNPs) have been used, for the first time, in dye-sensitized solar cells (DSSCs), and the incorporation of TiC nanoparticles in a binary ionic liquid electrolyte on the cell performance has been investigated. Cell conversion efficiency with 0.6 wt% TiC reached 1.68%, which was higher than that without adding TiC (1.18%); however, cell efficiency decreased when the TiC content reached 1.0 wt%. The electrochemical impedance spectroscopy (EIS) technique was employed to analyze the interfacial resistance in DSSCs, and it was found that the resistance of the charge-transfer process at the Pt counter electrode (Rct1) decreased when up to 1.0 wt% TiC was added. Presumably, this was due to the formation of the extended electron transfer surface (EETS) which facilitates electron transfer to the bulk electrolyte, resulting in a decrease of the dark current, whereby the open-circuit potential (VOC) could be improved. Furthermore, a significant increase in the fill factor (FF) for all TiC additions was related to the decrease in the series resistance (RS) of the DSSCs. However, at 1.0 wt% TiC, the largest charge-transfer resistance at the TiO2/dye/electrolyte interface was observed and resulted from the poor penetration of the electrolyte into the porous TiO2. The long-term stability of DSSCs with a binary ionic liquid electrolyte, which is superior to that of an organic solvent-based electrolyte, was also studied. © 2009 Elsevier B.V. All rights reserved.
Citation:
Lee C-P, Lee K-M, Chen P-Y, Ho K-C (2009) On the addition of conducting ceramic nanoparticles in solvent-free ionic liquid electrolyte for dye-sensitized solar cells. Solar Energy Materials and Solar Cells 93: 1411–1416. Available: http://dx.doi.org/10.1016/j.solmat.2009.03.010.
Publisher:
Elsevier BV
Journal:
Solar Energy Materials and Solar Cells
Issue Date:
Aug-2009
DOI:
10.1016/j.solmat.2009.03.010
Type:
Article
ISSN:
0927-0248
Sponsors:
This work was financially supported by the King Abdullah University of Science and Technology (KAUST) through the Global Research Partnership Centers-in-Development grant (KAUST GRP-CID). Some of the instruments used in this study were made available through the support of the National Science Council (NSC) of Taiwan, the Republic of China, under Grant no. NSC 96-2120-M-002-016 and NSC 97-2120-M-002-012.
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Full metadata record

DC FieldValue Language
dc.contributor.authorLee, Chuan-Peien
dc.contributor.authorLee, Kun-Muen
dc.contributor.authorChen, Po-Yenen
dc.contributor.authorHo, Kuo-Chuanen
dc.date.accessioned2016-02-25T13:51:48Zen
dc.date.available2016-02-25T13:51:48Zen
dc.date.issued2009-08en
dc.identifier.citationLee C-P, Lee K-M, Chen P-Y, Ho K-C (2009) On the addition of conducting ceramic nanoparticles in solvent-free ionic liquid electrolyte for dye-sensitized solar cells. Solar Energy Materials and Solar Cells 93: 1411–1416. Available: http://dx.doi.org/10.1016/j.solmat.2009.03.010.en
dc.identifier.issn0927-0248en
dc.identifier.doi10.1016/j.solmat.2009.03.010en
dc.identifier.urihttp://hdl.handle.net/10754/599045en
dc.description.abstractTitanium carbide (TiC) is an extremely hard conducting ceramic material often used as a coating for titanium alloys as well as steel and aluminum components to improve their surface properties. In this study, conducting ceramic nanoparticles (CCNPs) have been used, for the first time, in dye-sensitized solar cells (DSSCs), and the incorporation of TiC nanoparticles in a binary ionic liquid electrolyte on the cell performance has been investigated. Cell conversion efficiency with 0.6 wt% TiC reached 1.68%, which was higher than that without adding TiC (1.18%); however, cell efficiency decreased when the TiC content reached 1.0 wt%. The electrochemical impedance spectroscopy (EIS) technique was employed to analyze the interfacial resistance in DSSCs, and it was found that the resistance of the charge-transfer process at the Pt counter electrode (Rct1) decreased when up to 1.0 wt% TiC was added. Presumably, this was due to the formation of the extended electron transfer surface (EETS) which facilitates electron transfer to the bulk electrolyte, resulting in a decrease of the dark current, whereby the open-circuit potential (VOC) could be improved. Furthermore, a significant increase in the fill factor (FF) for all TiC additions was related to the decrease in the series resistance (RS) of the DSSCs. However, at 1.0 wt% TiC, the largest charge-transfer resistance at the TiO2/dye/electrolyte interface was observed and resulted from the poor penetration of the electrolyte into the porous TiO2. The long-term stability of DSSCs with a binary ionic liquid electrolyte, which is superior to that of an organic solvent-based electrolyte, was also studied. © 2009 Elsevier B.V. All rights reserved.en
dc.description.sponsorshipThis work was financially supported by the King Abdullah University of Science and Technology (KAUST) through the Global Research Partnership Centers-in-Development grant (KAUST GRP-CID). Some of the instruments used in this study were made available through the support of the National Science Council (NSC) of Taiwan, the Republic of China, under Grant no. NSC 96-2120-M-002-016 and NSC 97-2120-M-002-012.en
dc.publisherElsevier BVen
dc.subjectBinary ionic liquid electrolyteen
dc.subjectDye-sensitized solar cells (DSSCs)en
dc.subjectLong-term stabilityen
dc.subjectTitanium carbide (TiC)en
dc.titleOn the addition of conducting ceramic nanoparticles in solvent-free ionic liquid electrolyte for dye-sensitized solar cellsen
dc.typeArticleen
dc.identifier.journalSolar Energy Materials and Solar Cellsen
dc.contributor.institutionNational Taiwan University, Taipei, Taiwanen
dc.contributor.institutionIndustrial Technology Research Institute of Taiwan, Hsin-chu, Taiwanen
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