Sandwich-structure transferable free-form OLEDs for wearable and disposable skin wound photomedicine
- Authors
- Jeon, Yongmin; Choi, Hye-Ryung; Kwon, Jeong Hyun; Choi, Seungyeop; Nam, Kyung Mi; Park, Kyoung-Chan; Choi, Kyung Cheol
- Issue Date
- Dec-2019
- Publisher
- SPRINGERNATURE
- Citation
- LIGHT-SCIENCE & APPLICATIONS, v.8, no.1
- Journal Title
- LIGHT-SCIENCE & APPLICATIONS
- Volume
- 8
- Number
- 1
- URI
- https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/84343
- DOI
- 10.1038/s41377-019-0221-3
- ISSN
- 2047-7538
- Abstract
- 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.
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