Title
Conductive PEDOT:PSS on surface-functionalized chitosan biopolymers for stretchable skin-like electronicsConductive PEDOT:PSS on surface-functionalized chitosan biopolymers for stretchable skin-like electronics
Author
Zeno Rizqi Ramadhan, Joo Won Han, Juhee Hong, Sung Bin Park, Jung Ha Kim, Anky Fitrian Wibowo, Ajeng Prameswati, Souk Yoon, Kim, Jong hee Lee, Soyeon Kim, Dong Chan Lim, Myoung-Woon Moon, Min Seok Kim, Yong Hyun Kim
Year
2021
Journal
Organic Electronics
Abstract
Poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) is a promising alternative transparent electrode to replace conventional indium tix oxide (ITO) for flexible and stretchable electronics. For their applications in optoelectronic devices, realizing both high conductivity and transmittance for the films is of great necessity as a suitable high performance transparent electrode. Here, we demonstrate simultaneously enhanced electrical and optical properties of PEDOT:PSS films prepared on chitosan bio-substrates by using an organic surface modifier, 11-aminoundecanoic acid (11-AA). The sheet resistance of PEDOT:PSS films decreases from 1120.8 to 292.8 Ω/sq with an increase in a transmittance from 75.9 to 80.4% by 11-AA treatment on the chitosan films. The functional groups of 11-AA effectively enhance the adhesion property at the interface between the chitosan substrate and PEDOT:PSS by forming strong interfacial bondings and decrease insulating PSS from PEDOT:PSS films. The wearable heater devices and on-skin sensors based on the 11-AA-treated PEDOT:PSS on the chitosan bio-substrates are successfully fabricated, showing the excellent thermal and sensing performances. The 11-AA surface-modification approach for highly conductive PEDOT:PSS on chitosan bio-substrates presents a great potential for applications toward transparent, flexible and stretchable electronics.
Instrument
NRS-5100
Keywords
Raman spectroscopy, PEDOT:PSS, Transparent electrodes, Surface modification, Wearable devices, Organic electronics