Properties of Zn-doped GaN. II. Photoconductivity
- 1 September 1974
- journal article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 45 (9), 3892-3895
- https://doi.org/10.1063/1.1663881
Abstract
A drastic change is observed in the electron concentration and in the photoconductivity spectrum of GaN as the Zn concentration is increased. The photoconductivity peak shifts to higher energies by about 70 meV, the exponential edge of the spectrum steepens by a factor of 3, and the sensitivity to visible radiation disappears. These changes are tentatively attributed to an abrupt decrease in bandtailing when Zn preferentially occupies N sites above a critical Zn concentration.Keywords
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