Abstract
Flexible electronics have attracted increased attention in advanced fields, such as electronic skin and flexible displays. However, most flexible electronic devices are made with polymers that lack biocompatibility and environmental friendliness. Meanwhile, the complexity of the manufacturing process further restricts the mass production of flexible devices. This study uses biocompatible sodium alginate (SA) derived from seaweed as a flexible substrate to fabricate a thin film transistor (TFT) without using lithography, effectively protecting the flexible substrate from eroding. The flexible TFT with SA substrate can be opened at the Vg of ~ 0 V, and the mobility 26.8 cm2/(V·s) is realized. Flexible TFT with SA substrate has desirable characteristics, such as biocompatibility, transparency, and high mobility, providing promise for advancing the implementation of electronic skin and flexible displays.
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