Self-healable electroluminescent devices
Research output: Journal Publications and Reviews (RGC: 21, 22, 62) › 21_Publication in refereed journal › peer-review
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Original language | English |
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Article number | 102 |
Journal / Publication | Light: Science and Applications |
Volume | 7 |
Issue number | 1 |
Online published | 5 Dec 2018 |
Publication status | Online published - 5 Dec 2018 |
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DOI | DOI |
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Link to Scopus | https://www.scopus.com/record/display.uri?eid=2-s2.0-85057998933&origin=recordpage |
Permanent Link | https://scholars.cityu.edu.hk/en/publications/publication(db87db58-5d7c-4cfa-a304-cdfeb7ffeb72).html |
Abstract
Electroluminescent (EL) devices have been extensively integrated into multi-functionalized electronic systems in the role of the vitally constituent light-emitting part. However, the lifetime and reliability of EL devices are often severely restricted by concomitant damage, especially when the strain exceeds the mechanical withstanding limit. We report a self-healable EL device by adopting a modified self-healable polyacrylic acid hydrogel as the electrode and a self-healable polyurethane as a phosphor host to realize the first omni-layer-healable light-emitting device. The physicochemical properties of each functionalized layer can be efficiently restored after experiencing substantial catastrophic damage. As a result, the luminescent performance of the self-healable EL devices is well recovered with a high healing efficiency (83.2% for 10 healing cycles at unfixed spots, and 57.7% for 20 healing cycles at a fixed spot). In addition, inter-device healing has also been developed to realize a conceptual “LEGO”-like assembly process at the device level for light-emitting devices. The design and realization of the self-healable EL devices may revive their performance and expand their lifetime even after undergoing a deadly cut. Our self-healable EL devices may serve as model systems for electroluminescent applications of the recently developed ionically conductive healable hydrogels and dielectric polymers.
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Citation Format(s)
Self-healable electroluminescent devices. / Liang, Guojin; Liu, Zhuoxin; Mo, Funian et al.
In: Light: Science and Applications, Vol. 7, No. 1, 102, 05.12.2018.Research output: Journal Publications and Reviews (RGC: 21, 22, 62) › 21_Publication in refereed journal › peer-review
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