Photolithographically patterned and highly stable electrochromic displays enabled by a photo-assisted cross-linker
Photolithography is a standard technique for high resolution patterning of electronic devices. This study presents a new tris-diazo compound (X8) as a carbene crosslinker which responds to UV photons and can be directly patterned by photolithography. The tris-diazo compound (X8) has been successfull...
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Published in | Journal of materials chemistry. C, Materials for optical and electronic devices Vol. 11; no. 44; pp. 15591 - 15598 |
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Main Authors | , , , , , , , , |
Format | Journal Article |
Language | English |
Published |
Cambridge
Royal Society of Chemistry
16.11.2023
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Subjects | |
Online Access | Get full text |
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Summary: | Photolithography is a standard technique for high resolution patterning of electronic devices. This study presents a new tris-diazo compound (X8) as a carbene crosslinker which responds to UV photons and can be directly patterned by photolithography. The tris-diazo compound (X8) has been successfully applied to fabricate solution-processable electrochromic polymer (ECP) displays. Upon exposure to UV light of 254 nm wavelength, the blend of X8 (≤5 wt%) with ECP (PProDOT, poly(3,4-propylenedioxythiophene)) can cross-link, exhibiting a ∼93% solvent resistance whereas the pristine PProDOT does not cross-link at all. The electrochromic devices (ECDs) based on the crosslinked PProDOT showed an exceptional stability of 300 000 operational cycles, with both bleaching and coloring time of 0.5 s without obvious deterioration. With lithographical patterning, a minimum 50 μm size of display pixel has been realized, which paves the way for future large-area and low-cost electrochromic display applications.
A newly designed tris-diazo compound has been successfully applied to fabricate high-performance solution-processable electrochromic polymer displays. |
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Bibliography: | https://doi.org/10.1039/d3tc03088a Electronic supplementary information (ESI) available. See DOI |
ISSN: | 2050-7526 2050-7534 |
DOI: | 10.1039/d3tc03088a |