Fatigue-free, electrically reliable copper electrode with nanohole array
- Fatigue-free, electrically reliable copper electrode with nanohole array
- 김병준; 조이길; 정민석; 신해아슬; 문명운; 한흥남; 남기태; 주영창; 최인석
- Issue Date
- VOL 8, NO 21, 3300-3306
- Design and fabrication of reliable electrodes is one of the most important challenges
in fl exible devices, which undergo repeated deformation. In conventional approaches,
mechanical and electrical properties of continuous metal fi lms degrade gradually
because of the fatigue damage. The designed incorporation of nanoholes into Cu
electrodes can enhance the reliability. In this study, the electrode shows extremely low
electrical resistance change during bending fatigue because the nanoholes suppress
crack initiation by preventing protrusion formation and damage propagation by
crack tip blunting. This concept provides a key guideline for developing fatigue-free
fl exible electrodes.
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