Transport and band structure studies of crystalline ZnRh2 O4

Negar Mansourian-Hadavi; Supaporn Wansom; Nicola H. Perry; Arpun R. Nagaraja; Thomas O. Mason; Lin Hui Ye; Arthur J. Freeman

doi:10.1103/PhysRevB.81.075112

Transport and band structure studies of crystalline ZnRh2 O4

Negar Mansourian-Hadavi^*, Supaporn Wansom, Nicola H. Perry, Arpun R. Nagaraja, Thomas O. Mason, Lin Hui Ye, Arthur J. Freeman

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

34 Scopus citations

Abstract

We report the synthesis and characterization of non- d10 p -type transparent conducting oxides of the normal spinel ZnRh2 O4. Undoped ZnRh2 O4 was successfully prepared by means of bulk solid-state synthesis. The conduction mechanism and bulk defect chemistry of polycrystalline sintered pellets of ZnRh2 O4 were studied through electrical conductivity and Seebeck coefficient measurements, in defect equilibrium at elevated temperature under controlled atmospheres. Optical diffuse reflectance measurements were also carried out to evaluate band gap. The data were analyzed in terms of an activated mobility (small polaron conduction), with a hopping energy of 0.25 eV. Results from band structure calculations by LDA+U and optical band-gap measurement by UV-visible spectrometry are in good agreement with literature data.

Original language	English (US)
Article number	075112
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	81
Issue number	7
DOIs	https://doi.org/10.1103/PhysRevB.81.075112
State	Published - Feb 17 2010

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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title = "Transport and band structure studies of crystalline ZnRh2 O4",

abstract = "We report the synthesis and characterization of non- d10 p -type transparent conducting oxides of the normal spinel ZnRh2 O4. Undoped ZnRh2 O4 was successfully prepared by means of bulk solid-state synthesis. The conduction mechanism and bulk defect chemistry of polycrystalline sintered pellets of ZnRh2 O4 were studied through electrical conductivity and Seebeck coefficient measurements, in defect equilibrium at elevated temperature under controlled atmospheres. Optical diffuse reflectance measurements were also carried out to evaluate band gap. The data were analyzed in terms of an activated mobility (small polaron conduction), with a hopping energy of 0.25 eV. Results from band structure calculations by LDA+U and optical band-gap measurement by UV-visible spectrometry are in good agreement with literature data.",

author = "Negar Mansourian-Hadavi and Supaporn Wansom and Perry, {Nicola H.} and Nagaraja, {Arpun R.} and Mason, {Thomas O.} and Ye, {Lin Hui} and Freeman, {Arthur J.}",

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T1 - Transport and band structure studies of crystalline ZnRh2 O4

AU - Mansourian-Hadavi, Negar

AU - Wansom, Supaporn

AU - Perry, Nicola H.

AU - Nagaraja, Arpun R.

AU - Mason, Thomas O.

AU - Ye, Lin Hui

AU - Freeman, Arthur J.

PY - 2010/2/17

Y1 - 2010/2/17

N2 - We report the synthesis and characterization of non- d10 p -type transparent conducting oxides of the normal spinel ZnRh2 O4. Undoped ZnRh2 O4 was successfully prepared by means of bulk solid-state synthesis. The conduction mechanism and bulk defect chemistry of polycrystalline sintered pellets of ZnRh2 O4 were studied through electrical conductivity and Seebeck coefficient measurements, in defect equilibrium at elevated temperature under controlled atmospheres. Optical diffuse reflectance measurements were also carried out to evaluate band gap. The data were analyzed in terms of an activated mobility (small polaron conduction), with a hopping energy of 0.25 eV. Results from band structure calculations by LDA+U and optical band-gap measurement by UV-visible spectrometry are in good agreement with literature data.

AB - We report the synthesis and characterization of non- d10 p -type transparent conducting oxides of the normal spinel ZnRh2 O4. Undoped ZnRh2 O4 was successfully prepared by means of bulk solid-state synthesis. The conduction mechanism and bulk defect chemistry of polycrystalline sintered pellets of ZnRh2 O4 were studied through electrical conductivity and Seebeck coefficient measurements, in defect equilibrium at elevated temperature under controlled atmospheres. Optical diffuse reflectance measurements were also carried out to evaluate band gap. The data were analyzed in terms of an activated mobility (small polaron conduction), with a hopping energy of 0.25 eV. Results from band structure calculations by LDA+U and optical band-gap measurement by UV-visible spectrometry are in good agreement with literature data.

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Transport and band structure studies of crystalline ZnRh2 O4

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