DSSC using Wrightia tinctoria (Roxb.) R Br.: A trail

• Main Authors: Malavika Lakshmi, U., Raj, Aruna, Salam, Jishad A., Jayakrishnan, R., Priji, S., Gangaprasad, A., Gopchandran, K.G., Biju, V.
• Format: Conference Proceeding
• Language: English
• Subjects: Copper foil; Dye sensitized solar cell; Flexible; Violet photoluminescence; Wrightia tinctoria
• ISSN: 2214-7853; 2214-7853
• DOI: 10.1016/j.matpr.2021.07.423

•A DSSC of the configuration (Cu|TiO2|Dye(danthapala)|KOH(Electrolyte)|FTO) was engineered.•TiO2 thin films are screen printed over flexible Cu foil which serves as the back contact for the device structure.•The extracted dye shows violet photoluminescence at ~407 nm.•The device exhibited a short circuit current of ~4.3 × 10−6 A and an open circuit voltage of 0.011 V. This paper focuses on the structure of Dye Sensitized Solar Cell (DSSC) engineered using Titanium dioxide (TiO2) nano-particles sensitized by extract from leaves of Wrightia tinctoria (Roxb.) R. Br. TiO2 thin films are screen printed over flexible Cu foil which serves as the back contact for the device structure. Fluorine doped Tin Oxide (FTO) grown over glass substrate using chemical spray pyrolysis technique is used as the front electrode with KOH as the electrolyte. The optical characterization of the dye is conducted using optical absorption and emission spectroscopic studies. A DSSC of the configuration (Cu|TiO2|Dye(danthapala)|KOH(Electrolyte)|FTO) was engineered. The electrical parameters of the engineered Dye Sensitized Solar Cells were characterized. The two-diode model was used to extract the series and shunt resistance, saturation current and diode ideality factor for the device from the room temperature current–voltage characteristics.