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Enhancing the Energy-Conversion Efficiency of Solid-State Dye-Sensitized Solar Cells with a Charge-Transfer Complex based on 2,3-Dichloro-5,6-dicyano-1,4-benzoquinone
Dalian Univ Technol, State Key Lab Fine Chem, Linggong Rd 2, Dalian 116024, Peoples R China..
Dalian Univ Technol, State Key Lab Fine Chem, Linggong Rd 2, Dalian 116024, Peoples R China..
Dalian Univ Technol, State Key Lab Fine Chem, Linggong Rd 2, Dalian 116024, Peoples R China..
Dalian Univ Technol, State Key Lab Fine Chem, Linggong Rd 2, Dalian 116024, Peoples R China..
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2018 (English)In: ENERGY TECHNOLOGY, ISSN 2194-4288, Vol. 6, no 4, p. 752-758Article in journal (Refereed) Published
Abstract [en]

As a champion hole-transporting material (HTM), 2,27,7-tetrakis-(N,N-di-p-methoxyphenylamine)-9,9-spirobifluorene (Spiro-OMeTAD) has been widely used in solid-state dye-sensitized solar cells (ssDSCs). Owing to the low conductivity of Spiro-OMeTAD, a chemical doping strategy is commonly used to enhance its hole-transporting properties. In this study, we report a strong electron acceptor, 2,3-dichloro-5,6-dicyano-1,4-benzoquinone (DDQ) as an additive for Spiro-OMeTAD along with its application in ssDSCs. We show that the conductivity of Spiro-OMeTAD increases from 5.31 x 10(-5) to 2.22 x 10(-4) Scm upon the addition of 0.04% DDQ, and the power conversion efficiency (PCE) of the ssDSCs also increases. By utilizing a donor-pi-acceptor sensitizer with a high coefficient and an HTM with an optimized doping ratio, we were able to achieve a high PCE of 6.37% for the ssDSCs under 10 0mWcm(-2) AM1.5G simulated illumination, in comparison to the PCE of the pristine device, which was only 3.50%. An increase in the application of benzoquinone-based materials for organic electronics is expected, especially for solar-cell applications.

Place, publisher, year, edition, pages
John Wiley & Sons, 2018. Vol. 6, no 4, p. 752-758
Keywords [en]
charge transfer, dye-sensitized solar cells, donor-acceptor systems, photovoltaics, sensitizers
National Category
Materials Chemistry
Identifiers
URN: urn:nbn:se:kth:diva-227234DOI: 10.1002/ente.201700633ISI: 000430104000017Scopus ID: 2-s2.0-85041754073OAI: oai:DiVA.org:kth-227234DiVA, id: diva2:1205437
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QC 20180514

Available from: 2018-05-14 Created: 2018-05-14 Last updated: 2018-05-14Bibliographically approved

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