Journal
SYNTHETIC METALS
Volume 211, Issue -, Pages 40-48Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.synthmet.2015.10.024
Keywords
Indole; Electron donor; Density function theory; Dye-sensitized solar cells
Funding
- National Natural Science Foundation of China [21272033, 21402023]
- Fundamental Research Funds for the Central Universities [ZYGX2014J026]
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Three novel organic dyes WY1, WY2 and WY3 with the same pi-conjunction linker and acceptor but different donor units were synthesized and characterized to investigate the effects of different electron donor units on their photophysical, electrochemical and photovoltaic properties. Density functional theory calculations were carried out to study the ground state geometry structures and electronic structures of the three dyes. Under standard global AM 1.5 solar condition, the solar cells based on WY1, WY2 and WY3 show the overall power conversion efficiencies as 2.15%, 330% and 2.09%, respectively. All the investigation results reveal that different electron donors in organic dyes could cause significant differences in photovoltaic performances and organic dye WY2 with N-hexylphenothiazine as electron donor could show the best performance among the three dyes. (C) 2015 Elsevier B.V. All rights reserved.
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