Transparent, low-power pressure sensor matrix based on coplanar-gate graphene transistors.

Sun, Qijun; Kim, Do Hwan; Park, Sang Sik; Lee, Nae Yoon; Zhang, Yu; Lee, Jung Heon; Cho, Kilwon; Cho, Jeong Ho · Adv Mater · 2014

basic_science · Level V

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Abstract

A novel device architecture for preparing a transparent and low-voltage graphene pressure-sensor matrix on plastic and rubber substrates is demonstrated. The coplanar gate configuration of the graphene transistor enables a simplified procedure. The resulting devices exhibit excellent device performance, including a high transparency of ca. 80% in the visible range, a low operating voltage less than 2 V, a high pressure sensitivity of 0.12 kPa(-1) , and excellent mechanical durability over 2500 cycles.

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