Highly reliable and stretchable OLEDs based on facile patterning method: toward stretchable organic optoelectronic devices

IF 12.3 1区 材料科学 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC npj Flexible Electronics Pub Date : 2024-03-09 DOI:10.1038/s41528-024-00303-5
Minwoo Nam, Jaehyeock Chang, Hagseon Kim, Young Hyun Son, Yongmin Jeon, Jeong Hyun Kwon, Kyung Cheol Choi
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Abstract

Stretchable displays attract significant attention because of their potential applications in wearable electronics, smart textiles, and human-conformable devices. This paper introduces an electrically stable, mechanically ultra-robust, and water-resistant stretchable OLED display (SOLED) mounted on a stress-relief pillar platform. The SOLED is fabricated on a thin, transparent polyethylene terephthalate (PET) film using conventional vacuum evaporation, organic-inorganic hybrid thin film encapsulation (TFE), and a nonselective laser patterning process. This simple and efficient process yields an OLED display with exceptional stretchability, reaching up to 95% strain and outstanding durability, enduring 100,000 stretch-release cycles at 50% strain. Operational lifetime and water-resistant storage lifetime measurements confirm that the TFE provides effective protection even after the nonselective laser patterning process. A 3 × 3 array SOLED display module mounted on a stress-relief pillar platform is successfully implemented, marking the first case of water-resistant display array operation in the field of SOLEDs. This work aims to develop practical stretchable displays by offering a reliable fabrication method and device design for creating mechanically robust and adaptable displays, potentially paving the way for future advances in human-conformable electronics and other innovative applications.

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基于简易图案化方法的高可靠性和可拉伸有机发光二极管:走向可拉伸有机光电器件
可拉伸显示器因其在可穿戴电子设备、智能纺织品和人体适形设备中的潜在应用而备受关注。本文介绍了一种安装在应力消除支柱平台上的电气稳定、机械超坚固且防水的可拉伸有机发光二极管显示器(SOLED)。该 SOLED 采用传统的真空蒸发、有机-无机混合薄膜封装 (TFE) 和非选择性激光图案化工艺,在透明的聚对苯二甲酸乙二醇酯 (PET) 薄膜上制造而成。这种简单而高效的工艺生产出的 OLED 显示屏具有卓越的拉伸性,应变高达 95%,并且具有出色的耐用性,在应变为 50%的情况下可经受 100,000 次拉伸释放循环。工作寿命和防水存储寿命测量证实,即使在非选择性激光图案化工艺之后,TFE 仍能提供有效的保护。安装在应力消除支柱平台上的 3 × 3 阵列 SOLED 显示模块已成功实现,这标志着 SOLED 领域首个防水显示阵列的运行案例。这项工作旨在开发实用的可拉伸显示器,提供可靠的制造方法和器件设计,以制造机械坚固、适应性强的显示器,为未来可适应人体的电子产品和其他创新应用的发展铺平道路。
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来源期刊
CiteScore
17.10
自引率
4.80%
发文量
91
审稿时长
6 weeks
期刊介绍: npj Flexible Electronics is an online-only and open access journal, which publishes high-quality papers related to flexible electronic systems, including plastic electronics and emerging materials, new device design and fabrication technologies, and applications.
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