Ruthenium (Ru) Doped Titanium Dioxide (P25) Electrode for Dye Sensitized Solar Cells

Tharmakularasa Rajaramanan, Muthukumarasamy Natarajan, Punniamoorthy Ravirajan, Meena Senthilnanthanan and Dhayalan Velauthapillai
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Tharmakularasa Rajaramanan: Faculty of Engineering and Science, Western Norway University of Applied Sciences, P.O. Box 7030, 5020 Bergen, Norway
Muthukumarasamy Natarajan: Department of Physics, Coimbatore Institute of Technology, Coimbatore, Tamil Nadu 641014, India
Punniamoorthy Ravirajan: Clean Energy Research Laboratory, Department of Physics, University of Jaffna, Jaffna 40000, Sri Lanka
Meena Senthilnanthanan: Department of Chemistry, University of Jaffna, Jaffna 40000, Sri Lanka
Dhayalan Velauthapillai: Faculty of Engineering and Science, Western Norway University of Applied Sciences, P.O. Box 7030, 5020 Bergen, Norway

Energies, 2020, vol. 13, issue 7, 1-12

Abstract: In this study, P25-titanium dioxide (TiO 2 ) was doped with ruthenium (Ru) by systematically varying the Ru content at 0.15, 0.30, 0.45 and 0.6 mol%. The synthesized Ru-doped TiO 2 nanomaterials have been characterized by X-ray diffraction (XRD), Raman spectroscopy, energy-dispersive X-ray (EDX) analysis, UV-visible (UV–Vis) spectroscopy, and electrochemical impedance (EIS) spectroscopy. The XRD patterns of undoped and Ru-doped TiO 2 nanomaterials confirm the presence of mixed anatase and rutile phases of TiO 2 while EDX spectrum confirms the presence of Ti, O and Ru. Further, UV-visible absorption spectra of doped TiO 2 nanomaterial reveal a slight red shift on Ru-doping. The short circuit current density (J SC ) of the cells fabricated using the Ru-doped TiO 2 photoanode was found to be dependent on the amount of Ru present in TiO 2 . Optimized cells with 0.3 mol% Ru-doped TiO 2 electrodes showed efficiency which is 20% more than the efficiency of the control cell (η = 5.8%) under stimulated illumination (100 mWcm −2 , 1 sun) with AM 1.5 filter. The increase in J SC resulted from the reduced rate of recombination upon doping of Ru and this was confirmed by EIS analysis.

Keywords: dye sensitized solar cells; Ru-doped TiO 2; P25-TiO 2 (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2020
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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