Chemical sintering of TiO2 based photoanode for efficient dye sensitized solar cells using Zn nanoparticles

Ahmad, Muhammad Shakeel and Pandey, Adarsh Kumar and Rahim, Nasrudin Abd and Shahabuddin, Syed and Tyagi, Sudhir Kumar (2018) Chemical sintering of TiO2 based photoanode for efficient dye sensitized solar cells using Zn nanoparticles. Ceramics International, 44 (15). pp. 18444-18449. ISSN 0272-8842

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Recombination reactions due to poor inter-particle contact at lower temperatures (< 450 °C) is a bottle neck for cost effective flexible dye sensitized solar cells (DSSCs). In this study, TiO2sintering to Coble initial stage at low temperatures has been achieved with low melting point zinc (Zn) metal nanoparticles. Zn nanoparticles showed improved inter-particle contact by formation of necks due to high surface diffusion at relatively lower temperatures (200 °C). Addition of Zn nanoparticles showed comparable, rather improved efficiency at 200 °C compared to reference TiO2photoanode fabricated at 450 °C due to neck formation and surface plasmonic resonance (SPR) effect. Morphological studies revealed high contact formation between TiO2 and Zn nanoparticles. Electrochemical impedance and Uv–vis spectroscopy showed improvements in charge transfer and light absorption activity respectively. Structural studies showed no any detectable change in phase due to high surface diffusion and capillary forces produced by Zn nanoparticles at the TiO2/Zn interface.

Item Type: Article
Uncontrolled Keywords: Dye sensitized solar cell; Electron transfer; Neck formation; Plasmonic effect; Quantum capacitance; Sintering aid
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions: Deputy Vice Chancellor (Research & Innovation) Office > UM Power Energy Dedicated Advanced Centre
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 04 Oct 2019 07:34
Last Modified: 04 Oct 2019 07:34

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