Journal
OPTICAL MATERIALS
Volume 129, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.optmat.2022.112508
Keywords
SiO2 colloidal crystals; Reflect display; Electric response; High chromaticity
Categories
Funding
- opening fund of Key Laboratory of High Performance Fibers & Products of Ministry of Education at Donghua University, Shanghai Engineering Research Center of Photodetection Materials and Devices [20DZ2252600]
- [SIT-J2020-48]
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This paper introduces a SiO2-PC-ETPTA-based e-ink that achieves electrophoresis-driven modulation of structural color with the addition of rGO. It improves coloration, ink rheology, and electrochromic response time, which is significant for e-ink design in reflective displays.
There is an increasing demand towards reflective color display devices with high contrast as well as eye-protection function. To this point, colloidal photonic crystal inks have attracted intensive attentions in terms of their unique abilities to enable vivid color variation upon external stimuli. In this paper, the SiO2-propylene carbonate (PC)-trimethylolpropane ethoxylate triacrylate (ETPTA)-based resins e-ink has been developed to construct photonic crystal photomodulation devices, which can realize electrophoresis-driven modification of structural color. Specifically, it is found that the addition of reduced graphene oxide (rGO) plays a key role in improving coloration, ink rheology and electrochromic response time simultaneously for its special optical and electrical properties. This work may be helpful for the design of e-inks aiming at reflective displays.
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