Ionic Conductive Cellulose Mats by Solution Blow Spinning as Substrate and a Dielectric Interstrate Layer for Flexible Electronics

Abstract

Renewable cellulose substrates with submicron- and nanoscale structures have revived interest in paper electronics. However, the processes behind their production are still complex and time- and energy-consuming. Besides, the weak electrolytic properties of cellulose with submicron- and nanoscale structures have hindered its application in transistors and integrated circuits with low-voltage operation. Here, we report a simple, low-cost approach to produce flexible ionic conductive cellulose mats using solution blow spinning, which are used both as dielectric interstrate and substrate in low-voltage devices. The electrochemical properties of the cellulose mats are tuned through infiltration with alkali hydroxides (LiOH, NaOH, or KOH), enabling their application as dielectric and substrate in flexible, low-voltage, oxide-based field-effect transistors and pencil-drawn resistor-loaded inverters. The transistors exhibit good transistor performances under operation voltage below 2.5 V, and their electrical performance is strictly related to the type of alkali ionic specie incorporated. Devices fabricated on K+-infiltrated cellulose mats present the best characteristics, indicating pure capacitive charging of the semiconductor. The pencil-drawn load resistor inverter presents good dynamic performance. These findings may pave the way for a new generation of low-power, wearable electronics, enabling concepts such as the “Internet of Things”.

Tuning the Electrical Properties of Cellulose Nanocrystals through Laser-Induced Graphitization for UV Photodetectors

“…Zinc oxide ultraviolet (ZnO UV) sensors were produced to validate the LIGE approach proposed in this study. It is worth noting that ZnO UV sensors have been widely used to identify UV radiation, which is harmful to human health, causing countless cases of skin cancer. , This study collaborates to establish nanocellulose as a precursor material for LIGE, thus may open the way for a new generation for organic electronics, considering that micro- and nanocellulose use has already been established as a substrate and dielectric material in several electronic components. − …”

Alkali-Doped Nanopaper Membranes Applied as a Gate Dielectric in FETs and Logic Gates with an Enhanced Dynamic Response

“…Thus, thinking of it as part of “green” electronic devices in the future is a legitimate aspiration. Solid steps were taken during the last decade with the advent of a range of electronic − or electrochemical − devices manufactured directly onto paper substrates or from cellulose-based functional materials. , Some examples are biosensors, energy storage, and conversion devices, or even crucial electronic building blocks such as diodes or field-effect transistors (FETs), demonstrating that the paper electronics era is establishing its foundations. ,,− …”

“… 8 , 9 Some examples are biosensors, energy storage, and conversion devices, or even crucial electronic building blocks such as diodes or field-effect transistors (FETs), demonstrating that the paper electronics era is establishing its foundations. 3 , 8 , 10 − 14 …”

Cu-modified electrolyte-gated transistors based on reduced graphene oxide

“…[22][23][24][25][26][27][28][29] For instance, an appealing combination of natural and biocompatible materials such as paper, starch, ethylcellulose and nanoparticle-based ink was demonstrated to fabricate all-printed EGTs that can be possibly transferred to any surface of interest. 5,[30][31][32] Regarding surface engineering, single-molecule detection has been demonstrated by functionalizing the gate terminal with specific antibodies able to detect antigens present in the serum. 33 Another brilliant example is the use of the so-termed extended floating gate architecture introduced by Frisbie et al, who demonstrated the importance of controlling the area of the gate terminal coupled with an additional floating gate to endow EGTs with improved sensing capabilities towards ricin protein.…”