Application of non-covalent functionalized carbon nanotubes for the counter electrode of dye-sensitized solar cells |
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| Affiliation: | 1. Department of Chemistry, Indian Institute of Technology Bombay, Mumbai 400076, India;2. Centre of Excellence in Nanoelectronics, Indian Institute of Technology Bombay, Mumbai 400076, India;3. National Centre for Photovoltaic Research and Education, Indian Institute of Technology Bombay, Mumbai 400076, India;4. National Centre of Excellence in Technologies for Internal Security, Indian Institute of Technology Bombay, Mumbai 400076, India;1. CAS Key Laboratory of Biomedical Diagnostics, Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Science (CAS), 88 Keling Road, Suzhou 215163, China;2. Institute of Theoretical Chemistry, Jilin University, Changchun 130023, China;3. Department of Chemical and Biomolecular Engineering, Lafayette College, Easton 18042, PA, USA;1. Department of Chemistry, Chemistry Institute for Functional Materials, Pusan National University, Busan 690-735, Republic of Korea;2. Department of Physics, Pukyong National University, Busan 608-737, Republic of Korea;3. Department of Physics, Ulsan University, Ulsan 680-749, Republic of Korea;4. Department of Industrial Chemistry, Pukyong National University, Busan 608-739, Republic of Korea;1. Instituto de Ciencia Molecular (ICMOL), Universidad de Valencia, Calle Catedrático José Beltrán, 2, 46980 Paterna, Spain;2. Skolkovo Institute of Science and Technology, 143025 Skolkovo, Moscow Region, Russia;3. Canatu Oy, Konalankuja 5, FI-00390, Helsinki Finland;4. Department of Applied Physics, Aalto University, School of Science, P.O. Box 15100, FI-00076 Aalto, Finland;5. St. Petersburg Polytechnic University, 195251, St. Petersburg, Russia |
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| Abstract: | Multi-walled carbon nanotubes (MWCNTs) were functionalized noncovalently by lysozyme (LZ), cetyl pyridinium chloride (CPC), deoxycholate sodium (NaDC) and polyethylene glycol octylphenol ether (Triton X-100), respectively in this study. Four different kinds of functionalized MWCNTs were employed into dye-sensitized solar cell (DSSC) as the Pt-free counter electrode (CE). The correlation between the dispersion of MWCNTs and electrochemical active area of CE and the photovoltaic characteristic of DSSC were investigated. Among these four DSSCs, the one with Triton X-100 functionalized MWCNTs showed the best energy conversion efficiency of 2.69% which is 11.16% higher than the DSSC using pristine MWCNTs CE (2.42%), yet the efficiency is lower than the DSSC using Pt CE. While the DSSC with CPC, NaDC and LZ functionalized MWCNTs as the CE showed inferior the photovoltaic conversion efficiency than the DSSC using pristine MWCNTs CE. On analysis of the photovoltaic performance of DSSC and the dispersion of MWCNTs and electrochemical active area of CE, it is found that the high efficiency of the DSSC is associated with the good dispersion of MWCNTs and large electrochemical active area of the counter electrode material. |
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| Keywords: | Multi-walled carbon nanotubes Non-covalent functionalization Counter electrode Dye-sensitized solar cells |
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