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SCI Article

Enhancement of cell performance using nano polystyrene beads in photoelectrodes for dye-sensitized s
Author Oh, Joo Young (Dept Chem Engn); Chang, Young-Wook (Dept Chem Engn);
Corresponding Author Info Song, SA (reprint author), Korea Inst Ind Technol, Micro Nanoscale Mfg Grp, 143 Hanggaulro, Ansan 15588, Gyeonggi Do, South Korea.
E-mail 메일sasong@kitech.re.kr
Document Type Article
Source JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS Volume:78 Issue: Pages:195-199 Published:2017
Times Cited 0
External Information pdfhttp://dx.doi.org/10.1016/j.jtice.2017.05.029
Abstract A photoelectrode containing nanochannels was prepared to enhance the photoelectric conversion efficiency of dye-sensitized solar cells (DSSCs). The nanochannels in the photoelectrode enhanced the active area for charge transfer between the TiO2, dye, and electrolyte. Polystyrene (PS) nanobeads were prepared by solution polymerization, and the nanochannels were produced by the addition of these PS nanobeads (10 wt. %) to the TiO2 paste from which the photoelectrode was made. The added PS nanobeads were decomposed by the 500 degrees C heat treatment that was used to sinter the TiO2 particles, leading to the formation of nanochannels. The nanochannels increase the impregnated dye amounts and the contact area was enlarged. The efficiencies of photovoltaic cells without and with the nanochannels were 5.19 and 7.47%, respectively. The nanochannels resulted in the enlarged impregnated dye amount and dye/TiO2/electrolyte interface, which increased the degree of penetration of the photoelectrode by the dye and electrolyte via the nanochannels. Thus, the effectiveness of the delivery of electrons and holes to the electrodes was enhanced, leading to dramatic improvements in the photovoltaic cell performance. (C) 2017 Taiwan Institute of Chemical Engineers. Published by Elsevier B.V. All rights reserved.
Web of Science Categories Engineering, Chemical
Funding Korea Institute of Industrial Technology [EO170047]
Language English
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