4.7 Article

Fractional structured molybdenum oxide catalyst as counter electrodes of all-solid-state fiber dye-sensitized solar cells

期刊

JOURNAL OF COLLOID AND INTERFACE SCIENCE
卷 584, 期 -, 页码 520-527

出版社

ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcis.2020.10.003

关键词

Fiber electronics; Dye-sensitized solar cell; Molybdenum oxide; Counter electrode; Catalyst

资金

  1. Korea Institute of Materials Science (KIMS) [PNK6670]
  2. National Research Foundation of Korea (NRF) [PNK7270]
  3. National Research Council of Science & Technology (NST), Republic of Korea [PNK7270] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)

向作者/读者索取更多资源

A novel hierarchical MoO3 catalyst was fabricated and used as the counter electrode in dye-sensitized solar cells. The catalyst showed enhanced efficiency and stability, leading to a significant improvement in power conversion efficiency compared to the reference device.
A novel hierarchical solution-processed fractional structured molybdenum oxide (MoO3) catalyst is fabricated from tricarbonyltris (propionitrile) molybdenum and used as the counter electrode of all-solid-state fiber-shaped dye-sensitized solar cells (S-FDSSC). The Tafel plot results and electrical impedance spectroscopy suggest that the use of the fractional structured MoO3 catalyst enhances the efficiency of the reduction of I-3 to 3I at the counter electrode/electrolyte interface. Because of the improvements of the short-current circuit and fill factor, the power conversion efficiency of the MoO3-modified S-FDSSC improves by 60% compared with that of the reference S-FDSSC. In addition, because of the robust fractional structure of MoO3, the MoO3-modified S-FDSSC maintains 90% and 95% of efficiency after 350-fold bending and the incident light angle dependency test, respectively. At 65% humidity and at 65 degrees C, the power conversion efficiency of the MoO3-modified device decreases by <20% after 350 h of storage, while that of the reference device drops by more than 70%. (C) 2020 Elsevier Inc. All rights reserved.

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