Bulk photovoltaic effect in carbon-doped gallium nitride revealed by anomalous surface photovoltage spectroscopy

I. Levine; I. Gamov; M. Rusu; K. Irmscher; C. Merschjann; E. Richter; M. Weyers; Th Dittrich

doi:10.1103/PhysRevB.101.245205

Bulk photovoltaic effect in carbon-doped gallium nitride revealed by anomalous surface photovoltage spectroscopy

I. Levine, I. Gamov, M. Rusu, K. Irmscher, C. Merschjann, E. Richter, M. Weyers, Th Dittrich

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

Abstract

A bulk photovoltaic effect was observed in insulating carbon-doped gallium nitride crystals by investigating the light-induced change of the contact potential difference with a Kelvin probe as a function of the carbon concentration in the crystal. Bulk polarization was caused by excitation of defects setting in at photon energies of 0.95-1.05 eV (C1) and 2.5-2.6 eV (C3). From the dependence on the carbon concentration, C1 can be assigned to isolated carbon defects and C3 to tricarbon defects.

Original language	English
Article number	245205
Journal	Physical Review B
Volume	101
Issue number	24
DOIs	https://doi.org/10.1103/PhysRevB.101.245205
State	Published - 15 Jun 2020
Externally published	Yes

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1103/PhysRevB.101.245205

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title = "Bulk photovoltaic effect in carbon-doped gallium nitride revealed by anomalous surface photovoltage spectroscopy",

abstract = "A bulk photovoltaic effect was observed in insulating carbon-doped gallium nitride crystals by investigating the light-induced change of the contact potential difference with a Kelvin probe as a function of the carbon concentration in the crystal. Bulk polarization was caused by excitation of defects setting in at photon energies of 0.95-1.05 eV (C1) and 2.5-2.6 eV (C3). From the dependence on the carbon concentration, C1 can be assigned to isolated carbon defects and C3 to tricarbon defects.",

author = "I. Levine and I. Gamov and M. Rusu and K. Irmscher and C. Merschjann and E. Richter and M. Weyers and Th Dittrich",

note = "Publisher Copyright: {\textcopyright} 2020 American Physical Society.",

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day = "15",

doi = "10.1103/PhysRevB.101.245205",

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T1 - Bulk photovoltaic effect in carbon-doped gallium nitride revealed by anomalous surface photovoltage spectroscopy

AU - Levine, I.

AU - Gamov, I.

AU - Rusu, M.

AU - Irmscher, K.

AU - Merschjann, C.

AU - Richter, E.

AU - Weyers, M.

AU - Dittrich, Th

PY - 2020/6/15

Y1 - 2020/6/15

N2 - A bulk photovoltaic effect was observed in insulating carbon-doped gallium nitride crystals by investigating the light-induced change of the contact potential difference with a Kelvin probe as a function of the carbon concentration in the crystal. Bulk polarization was caused by excitation of defects setting in at photon energies of 0.95-1.05 eV (C1) and 2.5-2.6 eV (C3). From the dependence on the carbon concentration, C1 can be assigned to isolated carbon defects and C3 to tricarbon defects.

AB - A bulk photovoltaic effect was observed in insulating carbon-doped gallium nitride crystals by investigating the light-induced change of the contact potential difference with a Kelvin probe as a function of the carbon concentration in the crystal. Bulk polarization was caused by excitation of defects setting in at photon energies of 0.95-1.05 eV (C1) and 2.5-2.6 eV (C3). From the dependence on the carbon concentration, C1 can be assigned to isolated carbon defects and C3 to tricarbon defects.

UR - http://www.scopus.com/inward/record.url?scp=85087886464&partnerID=8YFLogxK

U2 - 10.1103/PhysRevB.101.245205

DO - 10.1103/PhysRevB.101.245205

M3 - مقالة

SN - 2469-9950

VL - 101

JO - Physical Review B

JF - Physical Review B

IS - 24

M1 - 245205

ER -

Bulk photovoltaic effect in carbon-doped gallium nitride revealed by anomalous surface photovoltage spectroscopy

Abstract

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