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Two-step deposition of Al-doped ZnO on p-GaN to form ohmic contacts.


ABSTRACT: Al-doped ZnO (AZO) thin films were deposited directly on p-GaN substrates by using a two-step deposition consisting of polymer assisted deposition (PAD) and atomic layer deposition (ALD) methods. Ohmic contacts of the AZO on p-GaN have been formed. The lowest sheet resistance of the two-step prepared AZO films reached to 145 Ω/sq, and the specific contact resistance reduced to 1.47 × 10-2 Ω·cm2. Transmittance of the AZO films remained above 80% in the visible region. The combination of PAD and ALD technique can be used to prepare p-type ohmic contacts for optoelectronics.

SUBMITTER: Su X 

PROVIDER: S-EPMC5529301 | biostudies-other | 2017 Dec

REPOSITORIES: biostudies-other

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