Intrinsically ionic conductive cellulose nanopapers applied as all solid dielectrics for low voltage organic transistors

Nature Communications
Shilei DaiJia Huang

Abstract

Biodegradability, low-voltage operation, and flexibility are important trends for the future organic electronics. High-capacitance dielectrics are essential for low-voltage organic field-effect transistors. Here we report the application of environmental-friendly cellulose nanopapers as high-capacitance dielectrics with intrinsic ionic conductivity. Different with the previously reported liquid/electrolyte-gated dielectrics, cellulose nanopapers can be applied as all-solid dielectrics without any liquid or gel. Organic field-effect transistors fabricated with cellulose nanopaper dielectrics exhibit good transistor performances under operation voltage below 2 V, and no discernible drain current change is observed when the device is under bending with radius down to 1 mm. Interesting properties of the cellulose nanopapers, such as ionic conductivity, ultra-smooth surface (~0.59 nm), high transparency (above 80%) and flexibility make them excellent candidates as high-capacitance dielectrics for flexible, transparent and low-voltage electronics.

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Citations

Oct 28, 2020·Advanced Materials·Chaoji Chen, Liangbing Hu
Aug 25, 2020·ACS Applied Materials & Interfaces·Yan WangJia Huang
Dec 10, 2021·Small·Derek Shui Hong Siddhartha DaiPaddy K L Chan

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Methods Mentioned

BETA
atomic force microscopy
AFM
chemical modification
X-ray

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