Produção Nacional
Revisado por pares
Ionic Conductive Cellulose Mats by Solution Blow Spinning as Substrate and a Dielectric Interstrate Layer for Flexible Electronics
2021; American Chemical Society; Volume: 13; Issue: 22 Linguagem: Inglês
10.1021/acsami.1c06274
ISSN1944-8252
AutoresPedro Ivo Cunha Claro, Inês Cunha, Rafaella T. Paschoalin, Diana Gaspar, Kelvi Wilson Evaristo Miranda, Osvaldo N. Oliveira, Rodrigo Martins, L. Pereira, J. M. Marconcini, Elvira Fortunato, L. H. C. Mattoso,
Tópico(s)Electrospun Nanofibers in Biomedical Applications
ResumoRenewable 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".
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