Fabrication of flexible transparent electrodes using PEDOT:PSS and application to resistive touch screen panels

Abstract

The flexible transparent electrodes were fabricated by line patterning of conductive inks consisting of poly(3,4‐ethylenedioxythiophene) doped with poly(4‐styrenesulfonic acid) (PEDOT:PSS) water dispersion, ethylene glycol, isopropyl alcohol, and tetraethoxysilane (TEOS) on polyethylene terephthalate (PET) films. The values of sheet resistance (Rs), total light transmittance, haze, figure‐of‐merit, and pencil hardness of the PEDOT:PSS‐TEOS/PET film were found to be 301 Ω/sq., 85.0%, 2.4%, 41, and 2H, respectively. Furthermore, a resistive touch screen panel was fabricated using the PEDOT:PSS‐TEOS/PET film as the top electrode. It was found that the drawing on the resistive touch screen panel was successfully displayed on the PC screen with good in‐plane uniformity and maximum linearity of 0.8%. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 45972.

The Role of Mineral Acid Doping of PEDOT:PSS and Its Application in Organic Photovoltaics

“…[1] PEDOT:PSS can potentially replace ITO, [2,3] and even finds much wider applications in electronic devices, such as solar cells, [4][5][6][7] supercapacitors, [1,[8][9][10][11] thermoelectric generators, [12,13] chemical sensors, [14] and flexible touch sensors. [15,16] Nevertheless, the conductivity of pristine PEDOT:PSS films are below 1 S cm −1 , which is remarkably lower than ITO, [17] thus hinders its applications. Since 2012, post-treatment of the pristine PEDOT:PSS films has been regarded as an effective way to improve conductivity.…”

“…Poly(3,4‐ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) is by far the most successful commercialized conducting polymer (chemical structure is shown in Figure ) . PEDOT:PSS can potentially replace ITO, and even finds much wider applications in electronic devices, such as solar cells, supercapacitors, thermoelectric generators, chemical sensors, and flexible touch sensors . Nevertheless, the conductivity of pristine PEDOT:PSS films are below 1 S cm −1 , which is remarkably lower than ITO, thus hinders its applications.…”

Solution electrowriting of highly stable TiN nanofiber pattern for transparent electrode under extreme environment

“…Transparent electrodes, a crucial building block in optical‐electronic devices such as liquid crystal displays (LCD), organic light‐emitting diodes (OLED), solar cells and touch screens, have recently attracted increasing attention . Driven by their broad application fields, more and more efforts have been endeavored on developing new transparent electrodes with high performance in the past few decades.…”

Fabrication of color conductive inks by introducing SWCNT/Ag and various dyes into polymeric solutions for potential applications in disposable, cheap, and flexible electronics

“…Due to sp 2 hybridization of carbon nanotubes causing out-of-plane delocalization of three s orbitals along with the p orbital, modification of mechanical, electrical, chemical, and biological properties of the CNTs takes place. Conductive inks have recently attracted increased researchers' attention for various applications in the fields of disposable sensors and biosensors, recyclable electronic products, photovoltaics, RFID tags, smart labels, touch screens and switches, antennas, printed heaters, and so on [3][4][5][6][7][8]. Notable increase in thermal strength of CNT-filled polymers has been observed in different thermal-measuring systems, such as TGA [9].…”