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

• 来源期刊: 光：科学与应用（英文版）
• 年，卷（期）: 2019,（6）
• 页码范围: 1111-1125
• 页数: 15页
• 语种: 英文

摘要

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 cylindricalshaped 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,reepithelialization was highly induced.Based on the results,the STOLED is expected to be applicable in various wearable and disposable photomedical devices.