Contact Electrification Induced Multicolor Self‐Recoverable Mechanoluminescent Elastomer for Wearable Smart Light‐Emitting Devices

Wearable smart light‐emitting devices whose luminescence can respond to human motions have attracted extensive attention. However, the present electroluminescence‐based devices always require power supply and electronic sensors, which makes them inconvenient to use. In this work, the contact electri...

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Bibliographic Details
Published in:Advanced optical materials 2023-06, Vol.11 (12), p.n/a
Main Authors: Wang, Jia, Yao, Kaiwen, Cui, Ketian, Zhang, Jiachi, Gu, Yan, Wang, Wenxiang, Jin, Xianfeng, Zhou, Jinyu
Format: Article
Language:English
Subjects:
contact electrification
Devices
Elastomers
Electrification
Gadolinium-gallium garnet
Human motion
luminescence
Materials science
Mechanics (physics)
mechanoluminescence
Optics
Phosphors
Piezoelectricity
Polydimethylsiloxane
wearable smart light‐emitting devices
Wearable technology
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Summary:Wearable smart light‐emitting devices whose luminescence can respond to human motions have attracted extensive attention. However, the present electroluminescence‐based devices always require power supply and electronic sensors, which makes them inconvenient to use. In this work, the contact electrification induced multicolor mechanoluminescent (ML) Gd3Ga5O12:A (A = Eu3+, Tb3+, Bi3+)/polydimethylsiloxane (PDMS) elastomers are presented. It is revealed that the contact electrification arising from interaction between phosphor and PDMS polymer under mechanics directly excites emission levels, resulting in the self‐recoverable ML not requiring pre‐irradiation and the ultrastrong ML much stronger than that of piezoelectric sulfides. The unique ML mechanism of the elastomers can be understood well according to a proposed electron‐cloud model. Based on the fabric threads processed by the multicolor ML elastomers, some typical wearable smart light‐emitting devices with unique feature of mechanics–photon conversion are designed. It is demonstrated that the devices can emit light sensitively in response to human motions for interactive clothing decoration or dynamic anticounterfeiting, and can quantitatively display real‐time or dynamic stress distributions of body or muscle for human motion monitoring. Therefore, the contact electrification induced multicolor non‐preirradiation ML elastomers are significantly promising for applications in wearable smart light‐emitting devices. Contact electrification‐induced multicolor mechanoluminescent (ML) Gd3Ga5O12:A (A=Eu3+, Tb3+, Bi3+)/PDMS elastomers have the ultrastrong and self‐recoverable ML not requiring preirradiation. Based on the fabric threads processed by the multicolor ML elastomers, some typical wearable smart light‐emitting devices with unique features of mechanics–photon conversion are designed for interactive clothing decoration, dynamic anticounterfeiting, and human motion monitoring.
ISSN:2195-1071
2195-1071
DOI:10.1002/adom.202203112