https://scholars.lib.ntu.edu.tw/handle/123456789/384692
標題: | A composite catalytic film of Ni-NPs/PEDOT: PSS for the counter electrodes in dye-sensitized solar cells | 作者: | Chang, L.-Y. Li, Y.-Y. Li, C.-T. Lee, C.-P. Fan, M.-S. Vittal, R. Ho, K.-C. Lin, J.-J. JIANG-JEN LIN KUO-CHUAN HO |
關鍵字: | Counter electrode; Dye-sensitized solar cell; Nickel nanoparticles; PEDOT: PSS; POEM | 公開日期: | 2014 | 卷: | 146 | 起(迄)頁: | 697-705 | 來源出版物: | Electrochimica Acta | 摘要: | As the catalytic material for the counter electrode (CE) of a dye-sensitized solar cell (DSSC), a composite film of nickel nanoparticles (Ni-NPs) and poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) was deposited on an FTO glass substrate, by using a home-made polymeric dispersant, poly(oxyethylene)-segmented imide (POEM). Scanning electron microscopy (SEM), atomic force microscopy (AFM), and energy dispersive X-ray spectroscopy (EDX) were used to characterize the films. A solar-to-electricity conversion efficiency (η) of 7.81% was achieved for the DSSC using Ni-NPs/PEDOT: PSS, while the DSSC with the Pt CE showed a ηof 7.63%. The best composite film showed a high stability, when it was subjected to potential cycling for 100 cycles in an electrolyte containing the redox couple, iodide/triiodide (I-/I3-), while the Pt film showed a considerable decrease in its stability. In replacing the conventional sputtered Pt film as the CE in a DSSC, the Ni-NPs/PEDOT: PSS film exhibited multiple advantages of higher power conversion efficiency, higher stability of the catalytic film, and less expensive material cost. The photovoltaic parameters of the cells were substantiated by incident photon-to-current conversion efficiency (IPCE) spectra, electrochemical impedance spectroscopy (EIS), Tafel polarization plots, and cyclic voltammetry (CV). © 2014 Elsevier Ltd. All rights reserved. |
URI: | http://www.scopus.com/inward/record.url?eid=2-s2.0-84908547431&partnerID=MN8TOARS http://scholars.lib.ntu.edu.tw/handle/123456789/384692 |
DOI: | 10.1016/j.electacta.2014.08.112 | SDG/關鍵字: | Counter electrodes; Dye- sensitized solar cells; Nickel nanoparticles; PEDOT:PSS; POEM |
顯示於: | 高分子科學與工程學研究所 |
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