Dependence of Ni/AlGaN Schottky barrier height on Al mole fraction
- 15 January 2000
- journal article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 87 (2) , 801-804
- https://doi.org/10.1063/1.371944
Abstract
The dependence of the Schottky barrier height of Ni/AlxGa1−xN contact on the Al mole fraction up to x=0.23 was studied. The barrier heights were measured by I–V, capacitance–voltage, and the internal photoemission method. The Al mole fractions were estimated from the AlGaN band gap energies measured by photoluminescence. In the range of x<0.2 a linear relationship between the barrier height and Al mole fraction was obtained. This was consistent with the slope predicted by the Schottky rule. For x=0.23, the measured barrier height was lower than predicted. We believed this was due to crystalline defects at the Ni/AlGaN interface.This publication has 16 references indexed in Scilit:
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