Journal of Inorganic Materials ›› 2015, Vol. 30 ›› Issue (1): 29-34.DOI: 10.15541/jim20140248

• Orginal Article • Previous Articles     Next Articles

Quasi-solid-state Dye-sensitized Solar Cells Employing Fibers Stacked Paper Carbons as Efficient Counter Electrodes

XU Shun-Jian1, LUO Yu-Feng1, 2, ZHONG Wei1, XIAO Zong-Hu1, LOU Yong-Ping1, OU Hui1   

  1. (1. Xinyu Institute of New Energy, Xinyu University, Xinyu 338004, China; 2. School of Mechatronics Engineering, Nanchang University, Nanchang 330031, China)
  • Received:2014-05-12 Revised:2014-06-18 Online:2015-01-20 Published:2014-12-29
  • Supported by:
    National Natural Science Foundation of China (51162025);Training Programme Foundation for Young Scientist of Jiangxi (20133BCB23035);Educational Commission of Jiangxi (KJLD13100, GJJ13776)

Abstract:

Three types of paper carbons (PCs) were introduced into quasi-solid-state dye-sensitized solar cells (QDSCs) as counter electrodes. The PCs were respectively prepared using printed paper, filter paper and facial tissue as raw materials by one-step pyrolysis. Results show that each PC consists of carbon fibers with radial size of ~10 μm, and has low crystallinity as well as well-developed porous structure. As a result, each type of PC displays more excellent catalytic activity for tri-iodide () reduction than graphite, which brings about higher efficiency for use in QDSCs. In three PCs, PC fabricated from printed paper possesses the highest surface area and the most outstanding catalytic activity. This is mainly attributed to unique carbonaceous ramentums on carbon fibers in printed paper derived PC. Each type of PC in QDSCs not only provides catalytic active sites for reduction, but also serves distinctive function to improve the ion conductivity of quasi-solid-state electrolyte. Consequently, PCs based QDSCs have higher short-circuit current density (Jsc) and open-circuit voltage (Voc) compared with traditional Pt based QDSCs. The higher Jsc and Voc cover the insufficiency of fill factor, resulting in comparable efficiencies with traditional Pt based QDSCs.

Key words: paper carbon, one-step pyrolysis, counter electrode, quasi-solid-state electrolyte, solar cells

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