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Femtosecond laser deposition of TiO2 nanoparticle-assembled films with embedded CdS nanoparticles

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Abstract

Based on the normal pulsed laser ablation method, femtosecond pulsed laser deposition (fs-PLD) is adopted in vacuum for the production of TiO2 nanoparticle-assembled films. We study the morphology and electronic characteristics of TiO2 nanoparticle-assembled films deposited at different oxygen background gas pressures from high vacuum (∼10−4 Pa) to 100 Pa and different deposition time. Our results show that TiO2 nanoparticle-assembled films obtained in high vacuum present both a mixture with rutile phase and anatase phase and a pure rutile phase. At the same time, there are more mesoporous structures in the film after annealing, which is beneficial for the enhancement of photocatalytic activity. In water splitting experiment, part of the TiO2 nanoparticle-assembled films embedded with a small mass fraction of CdS nanoparticles (∼5%) present an interesting photocurrent enhancement with a maximum value of ∼0.2 mA/cm2 under a solar simulator.

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Authors and Affiliations

  1. School of Electronic Engineering, Tianjin University of Technology and Education, Tianjin, 300222, China

    Xiao-chang Ni  (倪晓昌), Xuan Wang  (王宣), Tong Li  (李彤) & Li-juan Xu  (徐丽娟)

  2. CNR-SPIN and Dipartimento di Fisica, Università degli Studi di Napoli Federico II, Complesso Universitario Monte S. Angelo, Via Cintia, Napoli, 80126, Italy

    Xiao-chang Ni  (倪晓昌), Anoop Kiliyanamkandy, Salvatore Amoruso & Xuan Wang  (王宣)

  3. Key Laboratory of Enhanced Heat Transfer and Energy Conservation, Ministry of Education, and Key Laboratory of Heat Transfer and Energy Conversion, Beijing Municipality, College of Environmental and Energy Engineering, Beijing University of Technology, Beijing, 100124, China

    Li-xia Sang  (桑丽霞) & Hong-jie Zhang  (张洪杰)

  4. CNR-SPIN UOS Salerno, Via Ponte don Melillo, Fisciano, SA, 84084, Italy

    Rosalba Fittipaldi

  5. Ultrafast Laser Laboratory, and Key Laboratory of Opto-electronic Information Technology, Ministry of Education, Tianjin University, Tianjin, 300072, China

    Ming-lie Hu  (胡明列)

Authors
  1. Xiao-chang Ni  (倪晓昌)
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  2. Li-xia Sang  (桑丽霞)
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  3. Hong-jie Zhang  (张洪杰)
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  4. Anoop Kiliyanamkandy
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  5. Salvatore Amoruso
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  6. Xuan Wang  (王宣)
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  7. Rosalba Fittipaldi
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  8. Tong Li  (李彤)
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  9. Ming-lie Hu  (胡明列)
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  10. Li-juan Xu  (徐丽娟)
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Corresponding author

Correspondence to Xiao-chang Ni  (倪晓昌).

Additional information

This work has been supported by the National Natural Science Foundation of China (Nos.11104201 and 51376013), the Open Fund of Key Laboratory of Opto-electronic Information Technology, Ministry of Education, in Tianjin University, and the China National Scholarship Fund.

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Ni, Xc., Sang, Lx., Zhang, Hj. et al. Femtosecond laser deposition of TiO2 nanoparticle-assembled films with embedded CdS nanoparticles. Optoelectron. Lett. 10, 43–46 (2014). https://doi.org/10.1007/s11801-014-3196-6

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  • DOI: https://doi.org/10.1007/s11801-014-3196-6

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