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Electrochromic Metallo–Organic Nanoscale Films: A Molecular Mix and Match Approach to Thermally Robust and Multistate Solid‐State Devices
Author(s) -
Malik Naveen,
Lahav Michal,
Boom Milko E.
Publication year - 2020
Publication title -
advanced electronic materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.25
H-Index - 56
ISSN - 2199-160X
DOI - 10.1002/aelm.202000407
Subject(s) - materials science , electrochromism , electrochromic devices , electrolyte , fabrication , polymer , nanoscopic scale , ultraviolet , nanotechnology , solid state , layer (electronics) , optoelectronics , active matrix , electrode , composite material , engineering physics , thin film transistor , medicine , alternative medicine , engineering , chemistry , pathology
In this work, the performance of surface‐confined molecular assemblies, combined with a solid‐state electrolyte, as multicolor displays is reported. An ultraviolet (UV) crosslinked polymer is used as a matrix for the electrolyte. No dedicated ion storage layer is required to operate the laminated devices; up to 4500 redox cycles are demonstrated at a low voltage. The intense coloration and switching properties ( t = 0.4–2.8 s) are retained even after thermally treating these devices at 100 °C for 24 h in air. The versatility of this approach is demonstrated by the use of spray‐coated bimolecular assemblies for multicolor display fabrication. The molecular assemblies have coloration efficiencies as high as 338 cm 2 C −1 .