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

Yongmin Jeon, Hye Ryung Choi, Jeong Hyun Kwon, Seungyeop Choi, Kyung Mi Nam, Kyoung Chan Park, Kyung Cheol Choi

Research output: Contribution to journalArticle

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 μm) is formed in a sandwich structure with an ultra-thin transferable barrier (4.8 μm). 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.

Original languageEnglish
Article number114
JournalLight: Science and Applications
Volume8
Issue number1
DOIs
StatePublished - 1 Dec 2019
Externally publishedYes

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Sandwich structures
sandwich structures
Organic light emitting diodes (OLED)
optoelectronic devices
Skin
textiles
Optoelectronic devices
epidermis
washing
Textiles
organs
folding
Cell proliferation
Medical applications
Washing
cells
Polymers
Temperature

Cite this

Jeon, Yongmin ; Choi, Hye Ryung ; Kwon, Jeong Hyun ; Choi, Seungyeop ; Nam, Kyung Mi ; Park, Kyoung Chan ; Choi, Kyung Cheol. / Sandwich-structure transferable free-form OLEDs for wearable and disposable skin wound photomedicine. In: Light: Science and Applications. 2019 ; Vol. 8, No. 1.
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Sandwich-structure transferable free-form OLEDs for wearable and disposable skin wound photomedicine. / Jeon, Yongmin; Choi, Hye Ryung; Kwon, Jeong Hyun; Choi, Seungyeop; Nam, Kyung Mi; Park, Kyoung Chan; Choi, Kyung Cheol.

In: Light: Science and Applications, Vol. 8, No. 1, 114, 01.12.2019.

Research output: Contribution to journalArticle

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