期刊
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
卷 404, 期 -, 页码 -出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jphotochem.2020.112820
关键词
Dye-sensitized solar cells; Naphthalimide; Organic dyes; Phenothiazine; Electrochemical impedance spectroscopy
资金
- Indian Institute of Technology, Madras
The study focuses on the use of naphthalimide as an auxiliary acceptor in PTz-based dyes for DSSC applications. Two new organic dyes were synthesized with N-alkylated phenothiazine core and electron acceptor incorporation, showing optimal efficiency in DSSCs with iodide/triiodide electrolyte.
The effect of naphthalimide as auxiliary acceptor in the PTz-based dyes for dye-sensitised solar cell (DSSC) application is reported. In this regard, two new organic dyes with N-alkylated phenothiazine (PTz) core were synthesized by substitution of naphthalimide at C-3 of the PTz via triple bond and incorporation of an electron acceptor at C-7 position. Photophysical and electrochemical studies were carried out to assess the performance of the dyes on spectral coverage and to determine the redox energy levels, respectively. Charge distribution and electron transfer process of the optimized dyes were rationalised via theoretical studies. DSSCs fabricated with these dyes showed an optimal efficiency of 4.9 % for a device fabricated with iodide/triiodide electrolyte.
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