Journal
MATERIALS & DESIGN
Volume 224, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.matdes.2022.111407
Keywords
Near -infrared mechanoluminescence; Piezoelectricity; Pulsed laser deposition; Clusters; Self-recovery
Categories
Funding
- National Natural Science Foundation [11874230, 12074044, 12274243, 52233014]
- Fund of State Key Laboratory of Information Photonics and Optical Communications (BUPT)
- Fundamental Research Funds for the Central Universities
- Natural Science Foundation of Tianjin [18JCYBJC41500]
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Near-infrared (NIR)-emitting mechanoluminescence (ML) materials are highly desirable for deep imaging inside biological tissues. This study reports sustainable and self-recoverable NIR ML emission in pulsed laser deposition (PLD) grown ZnS:Mn films.
Near-infrared (NIR)-emitting mechanoluminescence (ML) materials are highly desirable since they are biological transparency and suitable for deep-imaging inside biological tissues. So far, NIR emission can be found in very limited number ML materials. Moreover, reported NIR ML materials suffer from limitations associated with the incompetence in self-reproducibility. Herein, we observe sustainable and self-recoverable NIR ML emission in pulsed laser deposition (PLD) method grown ZnS:Mn film, for the first time. ML emission in ZnS:Mn can be explained by the piezoelectricity-induced detrapping model. Broad ML emission covering both red and NIR ranges arises from the presence of (Mn)(n) clusters, which facilitates the energy transfer from excited Mn2+ ions to them. During the PLD growth, high laser fluence and deposition rate contribute to the formation of (Mn)n clusters, which was verified by electron param-agnetic resonance EPR and X-ray photoelectron spectroscopy XPS analysis. The device exhibits durable NIR ML over 105 repeated mechanical stresses, suggesting new possibilities aiming for constructing self-recoverable NIR ML materials.@ 2022 Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license (http:// creativecommons.org/licenses/by-nc-nd/4.0/).
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