期刊
MOLECULAR CRYSTALS AND LIQUID CRYSTALS
卷 653, 期 1, 页码 84-90出版社
TAYLOR & FRANCIS LTD
DOI: 10.1080/15421406.2017.1350025
关键词
porphyrin YD-2 dye; cobalt electrolyte; open circuit voltage
资金
- Korea Institute of Energy Technology Evaluation and Planning (KETEP)
- Ministry of Trade, Industry & Energy (MOTIE) of the Republic of Korea [20163010012310]
- Korea Evaluation Institute of Industrial Technology (KEIT) [20163010012310] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
We have investigated the effect of two different kinds of cobalt electrolytes on the photovoltaic performance in dye-sensitized solar cells (DSSCs) using the established porphyrin dye (YD-2). We have characterized the photovoltaic performance of DSSCs containing iodide/triiodide and two different Co3+/2+ electrolytes to confirm the relationship between redox potential of cobalt(III/II) tris(2,2-bipridine), [Co(bpy)(3)](3+/2+), cobalt(III/II) tris(1,10-phenanthroline), [Co(phen)(3)](3+/2+) and the photovoltaic characteristics in DSSCs. Compared to the iodine-based electrolyte, the photovoltage of the DSSCs based on [Co(phen)(3)](3+/2+) was increased by 15%. The current densities in [Co(bpy)(3)](3+/2+) and [Co(phen)(3)](3+/2+)-based devices decrease due to their larger size and decrease in difference bewteen HOMO level of dye and redox potential of electrolytes.
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