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 | |
| State | Published - 15 Jun 2020 |
| Externally published | Yes |
Bibliographical note
Publisher Copyright:© 2020 American Physical Society.
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SDG 7 Affordable and Clean Energy
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