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Issue 33, 2015
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Determination of the optical gap bowing parameter for ternary Ni1−xZnxO cubic rocksalt solid solutions

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Abstract

The lattice parameter variation for phase pure cubic rocksalt (RS) Ni1−xZnxO ternary solid solutions is observed to be perfectly governed by Vegard's law. X-ray absorption near edge spectroscopy confirms the RS symmetry of Zn atoms in the cubic lattice of Ni1−xZnxO. The optical gap bowing parameter for RS Ni1−xZnxO ternary solid solutions is determined, using diffuse reflectivity, to be −0.93 ± 0.05 eV. The negative value of the bowing indicates a repulsive interaction between the ligand O-2p and the metal Ni-3d orbitals. The determined value of the bowing parameter can be useful in designing UV photodetectors based on Ni1−xZnxO solid solutions.

Graphical abstract: Determination of the optical gap bowing parameter for ternary Ni1−xZnxO cubic rocksalt solid solutions

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Publication details

The article was received on 16 Jun 2015, accepted on 15 Jul 2015 and first published on 16 Jul 2015


Article type: Paper
DOI: 10.1039/C5DT02283E
Citation: Dalton Trans., 2015,44, 14793-14798
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    Determination of the optical gap bowing parameter for ternary Ni1−xZnxO cubic rocksalt solid solutions

    S. D. Singh, V. Nandanwar, H. Srivastava, A. K. Yadav, A. Bhakar, P. R. Sagdeo, A. K. Sinha and T. Ganguli, Dalton Trans., 2015, 44, 14793
    DOI: 10.1039/C5DT02283E

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