Low-on-resistance hydrogen terminal diamond field effect transistor and manufacturing method thereof
A field-effect transistor and low on-resistance technology, applied in the field of microelectronics, can solve the problem of large parasitic resistance in series at both ends of the channel, so as to improve saturation current and frequency characteristics, reduce on-resistance, and increase breakdown voltage Effect
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[0046] Example
[0047] Such as Figure 1 to Figure 8 As shown, the method for preparing a low on-resistance hydrogen-terminated diamond field effect transistor of the present invention has the following steps:
[0048] 1) Using conventional graphene transfer technology, transfer a layer of graphene film on a hydrogen-terminated single crystal diamond substrate;
[0049] 2) Carry out photolithography and development of the source and drain pattern on the sample, evaporate the Au / Pt / Ti source and drain metal, and strip it with acetone solution, then pass acetone and ethanol solution in sequence, clean with deionized water, and dry with nitrogen;
[0050] 3) The sample is annealed at 600°C for 1 hour in a hydrogen atmosphere. The underlying metal Ti reacts with graphene and diamond to generate TiC, achieving low ohmic contact;
[0051] 4) Using atomic layer deposition (ALD) technology to grow 50nm thick Al 2 O 3 Passivate the protective layer while preventing subsequent hydrogenation of ...
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