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Synthesis and characterization of TiO2/ZnO core/shell nanomaterials for solar cell applications

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  • Kanmani, S.S.
  • Ramachandran, K.

Abstract

TiO2/ZnO core/shell nanomaterials were synthesized in two steps involving preparation of core TiO2 nanoparticles by simple hydrolysis and growth of ZnO shell layers on core TiO2 nanoparticles by refluxing methods. Structural characterization by XRD confirmed the formation of anatase TiO2 and high crystalline wurtzite structured ZnO on the surface of TiO2, agreeing with Raman measurements. Here, a significant increase in the intensity of photoluminescence peak for ZnO-coated TiO2 than bare TiO2 infers the recombination of the photogenerated charge carriers. The current–voltage measurements of solar cell based on Eosin yellowish dye-sensitized TiO2 and TiO2/ZnO films showed an enhancement of open circuit voltage (Voc) from 0.278 to 0.412 V, when ZnO is added. This confirms its active role for the energy barrier leading to decrease in recombination losses.

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  • Kanmani, S.S. & Ramachandran, K., 2012. "Synthesis and characterization of TiO2/ZnO core/shell nanomaterials for solar cell applications," Renewable Energy, Elsevier, vol. 43(C), pages 149-156.
    • Handle: RePEc:eee:renene:v:43:y:2012:i:c:p:149-156
    DOI: 10.1016/j.renene.2011.12.014
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    References listed on IDEAS

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    1. Liu, Zhifeng & Liu, Chengcheng & Ya, Jing & Lei, E., 2011. "Controlled synthesis of ZnO and TiO2 nanotubes by chemical method and their application in dye-sensitized solar cells," Renewable Energy, Elsevier, vol. 36(4), pages 1177-1181.
    2. U. Bach & D. Lupo & P. Comte & J. E. Moser & F. Weissörtel & J. Salbeck & H. Spreitzer & M. Grätzel, 1998. "Solid-state dye-sensitized mesoporous TiO2 solar cells with high photon-to-electron conversion efficiencies," Nature, Nature, vol. 395(6702), pages 583-585, October.
    3. Senthil, T.S. & Muthukumarasamy, N. & Velauthapillai, Dhayalan & Agilan, S. & Thambidurai, M. & Balasundaraprabhu, R., 2011. "Natural dye (cyanidin 3-O-glucoside) sensitized nanocrystalline TiO2 solar cell fabricated using liquid electrolyte/quasi-solid-state polymer electrolyte," Renewable Energy, Elsevier, vol. 36(9), pages 2484-2488.
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    1. Maleki, Javad & Eskandari, Mehdi & Fathi, Davood, 2024. "New design and optimization of half-tandem quantum dot solar cell: Over 30% power conversion efficiency using nanostructure oriented core-shell," Renewable Energy, Elsevier, vol. 222(C).
    2. Guai, Guan Hong & Song, Qun Liang & Lu, Zhi Song & Ng, Chee Mang & Li, Chang Ming, 2013. "Tailor and functionalize TiO2 compact layer by acid treatment for high performance dye-sensitized solar cell and its enhancement mechanism," Renewable Energy, Elsevier, vol. 51(C), pages 29-35.
    3. Su, En-Chin & Huang, Bing-Shun & Liu, Chao-Chang & Wey, Ming-Yen, 2015. "Photocatalytic conversion of simulated EDTA wastewater to hydrogen by pH-resistant Pt/TiO2–activated carbon photocatalysts," Renewable Energy, Elsevier, vol. 75(C), pages 266-271.
    4. Boro, Bibha & Gogoi, B. & Rajbongshi, B.M. & Ramchiary, A., 2018. "Nano-structured TiO2/ZnO nanocomposite for dye-sensitized solar cells application: A review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 81(P2), pages 2264-2270.

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