학술논문
Electrostatic-Force-Assisted Dispensing Printing of Electrochromic Gels for Low-Voltage Displays
Document Type
Article
Source
ACS Applied Materials & Interfaces; May 2017, Vol. 9 Issue: 22 p18994-19000, 7p
Subject
Language
ISSN
19448244
Abstract
In this study, low-voltage, printed, ion gel-based electrochromic devices (ECDs) were successfully fabricated. While conventional dispensing printing provides irregularly printed electrochromic (EC) gels, we improved the adhesion between the printed gel and the substrate by applying an external voltage. This is called electrostatic-force-assisted dispensing printing. As a result, we obtained well-defined, printed, EC gels on substrates such as indium tin oxide-coated glass. We fabricated a gel-based ECD by simply sandwiching the printed EC gel between two transparent electrodes. The resulting ECD, which required a low coloration voltage (∼0.6 V), exhibited a high coloration efficiency (η) of 161 cm2/C and a large transmittance contrast (∼82%) between the bleached and colored states at −0.7 V. In addition, electrostatic-force-assisted dispensing printing was utilized to fabricate directly patterned ECDs.