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Ionic Conductive Cellulose Mats by Solution Blow Spinning as Substrate and a Dielectric Interstrate Layer for
Pedro I C Claro1,2, Inês Cunha2, Rafaella T Paschoalin3
1Graduate Program in Materials Science and Engineering (PPG-CEM), Federal University of São Carlos, 13565-905 São Carlos, SP, Brazil.
ACS Applied Materials & Interfaces
|May 26, 2021
Summary
Researchers developed a simple, low-cost method using solution blow spinning to create flexible, ion-conductive cellulose mats. These mats serve as dielectric and substrate for low-voltage electronics, improving performance with specific alkali ion infiltration.
Area of Science:
- Materials Science
- Nanotechnology
- Electronics Engineering
Background:
- Renewable cellulose substrates with nanoscale structures are of interest for paper electronics.
- Current production methods are complex, time-consuming, and energy-intensive.
- Submicron- and nanoscale cellulose structures have weak electrolytic properties, limiting low-voltage applications.
Purpose of the Study:
- To develop a simple, low-cost method for producing flexible ionic conductive cellulose mats.
- To utilize these mats as dielectric interlayers and substrates in low-voltage electronic devices.
- To tune electrochemical properties for enhanced device performance.
Main Methods:
- Solution blow spinning was employed to fabricate flexible cellulose mats.
- Cellulose mats were infiltrated with alkali hydroxides (LiOH, NaOH, KOH) to tune ionic conductivity.
- Fabrication of flexible, low-voltage, oxide-based field-effect transistors and pencil-drawn resistor-loaded inverters.
Main Results:
- The cellulose mats demonstrated utility as both dielectric and substrate in low-voltage devices.
- Transistors operated effectively below 2.5 V, with performance dependent on the incorporated alkali ion.
- Potassium ion (K+) infiltrated mats yielded the best transistor characteristics, suggesting capacitive charging.
- Pencil-drawn inverters exhibited good dynamic performance.
Conclusions:
- A simple, low-cost method for producing ion-conductive cellulose mats was established.
- These cellulose mats are suitable for flexible, low-voltage electronic applications.
- The findings support the development of next-generation low-power, wearable electronics and the Internet of Things.
