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Article
2018

Novel Iron-Based Polynuclear Metal Complexes [FeII(L)(CN)4]2–[FeIII(H2O)3Cl]2: Synthesis and Study of Photovoltaic Properties for Dye-Sensitized Solar Cell


Jue WangJue Wang, Chunya LiChunya Li, Wing-Leung WongWing-Leung Wong, Cheuk-Fai ChowCheuk-Fai Chow
Russian Journal of Electrochemistry
https://doi.org/10.1134/S1023193518140094
Abstract / Full Text

A series of novel polynuclear iron-based photosensitizers (1–3) with cyano-bridged to form a molecular square were synthesized and their optical, electrochemical, and photovoltaic properties were investigated. The modification of anchoring groups with 4,4'-dicarboxy-2,2'-bipyridine, 2,2'-bipyridine, and 4,4'-dimethoxy-2,2'-bipyridine does not show significant changes on the both absorption and electrochemical properties of these iron-based dyes. This indicates that the polynuclear iron-based photosensitizers have better flexibility to regulate their physical properties of solubility, surface absorption, and thin-film formation for device preparation. The polynuclear new dyes show power conversion efficiencies ranged from 0.43 to 0.48% that is almost the best system among the published iron-based photosensitizers. These iron-based dyes were able to chemisorb on TiO2 surface efficiently and then promoting electron injection and photocurrent generation in a dye-sensitized solar cell with solar irradiation.

Author information
  • Key Laboratory of Analytical Chemistry of the State Ethnic Affairs Commission, College of Chemistry and Materials Science, South-Central University for Nationalities, Wuhan, 430074, ChinaJue Wang & Chunya Li
  • Department of Science and Environmental Studies, Centre for Education in Environmental Sustainability, The Education University of Hong Kong, Tai Po, Hong Kong SAR, ChinaWing-Leung Wong & Cheuk-Fai Chow
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