Sandwich-structure transferable free-form OLEDs for wearable and disposable skin wound photomedicine

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Free-form optoelectronic devices can provide hyper-connectivity over space and time. However, most conformable optoelectronic devices can only be fabricated on flat polymeric materials using low-temperature processes, limiting their application and forms. This paper presents free-form optoelectronic devices that are not dependent on the shape or material. For medical applications, the transferable OLED (10 mu m) is formed in a sandwich structure with an ultra-thin transferable barrier (4.8 mu m). The results showed that the fabricated sandwich-structure transferable OLED (STOLED) exhibit the same high-efficiency performance on cylindrical-shaped materials and on materials such as textile and paper. Because the neutral axis is freely adjustable using the sandwich structure, the textile-based OLED achieved both folding reliability and washing reliability, as well as a long operating life (>150 h). When keratinocytes were irradiated with red STOLED light, cell proliferation and cell migration increased by 26 and 32%, respectively. In the skin equivalent model, the epidermis thickness was increased by 39%; additionally, in organ culture, not only was the skin area increased by 14%, but also, re-epithelialization was highly induced. Based on the results, the STOLED is expected to be applicable in various wearable and disposable photomedical devices.
Publisher
NATURE PUBLISHING GROUP
Issue Date
2019-12
Language
English
Article Type
Article
Citation

LIGHT-SCIENCE & APPLICATIONS, v.8

ISSN
2047-7538
DOI
10.1038/s41377-019-0221-3
URI
http://hdl.handle.net/10203/270954
Appears in Collection
EE-Journal Papers(저널논문)
Files in This Item
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