Abstract
High performance graphene field-effect transistors (FETs) with a solution-processed Al2O3 sensing membrane were fabricated. The solution-processed deposition technique offers a lot of advantages in terms of low cost, simplicity, high throughput, and large-area devices. Especially, the solution-deposition process is well-suited for membrane formation of graphene FETs, which is vulnerable to plasma or thermal processes for insulator growth on surface. The graphene FETs with a solution-deposited Al2O3 sensing membrane exhibited a higher pH sensitivity as well as good chemical stability. Therefore, the graphene FETs with solution-deposited Al2O3 sensing membrane are very promising to biological sensors application.
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