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Probing and modulating surface electron accumulation in InN by the electrolyte gated Hall effect

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5 Author(s)
Brown, G.F. ; Department of Materials Science and Engineering, University of California, Berkeley, California 94720, USA ; Ager, J.W. ; Walukiewicz, W. ; Schaff, W.J.
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The surface contribution to the electrical transport properties of InN was directly measured and modulated by the electrolyte gated Hall effect. Undoped and Mg-doped films show different behaviors that can be effectively described by a multilayer model, taking into account the conduction contribution from both the surface and interface with the buffer layer. Gated photoluminescence experiments further show the surface accumulation layer enhances radiative electron-hole recombination in undoped InN.

Published in:
Applied Physics Letters  (Volume:93 ,  Issue: 26 )

Date of Publication: Dec 2008

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