Journal
JOURNAL OF MOLECULAR STRUCTURE
Volume 1206, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.molstruc.2020.127694
Keywords
Dye-sensitized solar cells; Co-sensitization; Diphenylpyranylidene; Molar extinction coefficient
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Funding
- National Natural Science Foundation of China [21762033]
- High Level Talents Scientific Foundation of Inner Mongolia Normal University [2015YJRC001]
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To explore the co-sensitizing ability of 2,6-diphenyl-4H-pyranylidene (DP) dye, a novel dye W2 with dual anchor was synthesized, characterized and studied for the application of dye-sensitized solar cells. The results showed that the power conversion efficiency of W2 achieved 4.77% and further improved to 5.56% with 30 mM of chenodeoxycholic acid added as co-absorbent. Solar cell based on N719 + W2 cosensitization system exhibited enhanced photocurrent than the reference N719 dye, promoting the power conversion efficiency from 7.77% to 8.20% and enhanced to 8.49% in presence of co-absorbent. These elevated superior performance resulted mainly from a there higher molar extinction coefficient of dye W2 in range of 325-475 nm complementing the light-harvest ability of N719 dye. (C) 2020 Elsevier B.V. All rights reserved.
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