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Applied Physics B

, 124:50 | Cite as

Deposition of nanocomposite Cu–TiO2 using heterogeneous colliding plasmas

  • Pramod K. Pandey
  • Raj K. Thareja
  • Ravi Pratap Singh
  • John T. Costello
Article

Abstract

The formation of CuTiO2 nanocomposites has been observed in an experiment in which laser plasma plumes of Cu and Ti collide and stagnate in an oxygen atmosphere. The inherent advantage of this technique lies in its simplicity and flexibility where laser, target composition and geometry along with ambient atmosphere are all controllable parameters through which the stoichiometry of the deposited nanocomposites may be selected. The experiment has been performed at three oxygen ambient pressures 10−4, 10−2, 100 mbar and we observe its effect on stoichiometry, and morphology of the deposited nanocomposites. Here, we show how the stoichiometry of deposited nanocomposites can be readily controlled by changing just one parameter, namely the ambient oxygen pressure. The different peaks of photoluminescence spectra \(\lambda =390{\text{ nm}}\;\left( {E=3.18{\text{ eV}}} \right)\) corresponding to the anatase phase of TiO2, along with the peaks at λ = 483 nm (E = 2.56 eV) and 582 nm (E = 2.13 eV) of deposited nanocomposites, shows the doping/blending effect on the band gaps which may potentially be of value in solar cell technology. The technique can, in principle, be extended to include nanocomposites of other materials making it potentially more widely applicable.

Notes

Acknowledgements

Work supported by Science Foundation Ireland under Grant Nos. 12/IA/1742 and 16/RI/3696. We acknowledge EU FP7 Grant Agreement No. 318941 under the project “Ultrafast Photonics-Processes and Interactions (UP-PI)” for travel funds. Pramod Pandey acknowledges support under the EU FP7-PEOPLE-2013-IIF Programme, Grant Agreement No. 628789. This work is associated with the FP7 EU COST Action MP1208 and the US National Science Foundation PIRE Grant No. 1243490.

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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  1. 1.National Centre for Plasma Science and Technology and School of Physical SciencesDublin City UniversityDublin 9Ireland
  2. 2.Centre for Lasers and Photonics and Photonics Sciences and Engineering ProgrammeIndian Institute of Technology KanpurKanpurIndia
  3. 3.Department of PhysicsIndian Institute of Technology KanpurKanpurIndia
  4. 4.Department of Applied ScienceMadan Mohan Malviya University of TechnologyGorakhpurIndia

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