Dye-sensitized solar cells based on Al-doped ZnO photoelectrodes sensitized with rhodamine

作者：Tyona M D; Jambure S B; Lokhande C D; Banpurkar A G; Osuji R U; Ezema F I

来源：Materials Letters, 2018, 220: 281-284.

DOI：10.1016/j.matlet.2018.03.040

• Rhodamine 6G dye
• Dye-sensitized electrodes
• Chemical bath deposition

Dye sensitized solar cell (DSSC) study of rhodamine 6G dye has been carried out by photocurrent-voltage (I-V) and electrochemical impedance spectroscopy (EIS) characterizations based on Al doped ZnO (AZO) electrodes. The Al concentration was varied from 1 to 5 at.% for Al doped ZnO. The absorption spectrum of the dye shows remarkable absorption in the range of 538-650 nm indicating its possible use as a photosensitizer for ZnO. The I-V characteristics measured in the dark and under 80W simulated illumination revealed enhanced DSSC performance for the AZO electrode with 2 at.% Al concentration. The electrochemical impedance spectra of Al doped ZnO samples was in good agreement with earlier results. This is a clear indication that rhodamine dye-sensitized AZO electrodes are superior to unsensitized ones in DSSC application.

• 出版日期2018-6-1