| 학회 |
한국재료학회 |
| 학술대회 |
2014년 가을 (11/27 ~ 11/28, 대전컨벤션센터) |
| 권호 |
20권 2호 |
| 발표분야 |
C. 에너지/환경 재료(Energy and Environmental Materials) |
| 제목 |
Self-Powered All-Flexible Light Emitting Systems Enabled by Flexible Piezoelectric Generator |
| 초록 |
Energy harvesting technology utilizing mechanical energy sources is a promising approach for the sustainable, independent, and permanent operation of a variety of flexible electronics. A new concept of fully-flexible light-emitting system self-powered by high-performance piezoelectric thin film energy harvester has been first established by manipulating highly-robust flexible vertical-structured light emitting diodes (f-VLEDs). The f-VLEDs fabricated by anisotropic conductive film bonding and entire wafer etching show stable and durable performance during periodic mechanical deformations. A high-output energy harvester capable of generating up to 140 V and 10 μA can be flexible via laser lift-off (LLO) process widely used in industries in a safe and robust manner. In particular, this LLO process is of great benefit to fabrication of mechanically stable flexible piezoelectric devices, not causing any degradation of piezoelectric properties. In this self-powered all-flexible electronic system with light-emitting can be spontaneously achieved by the produced electricity from the flexible thin film generator by slight biomechanical energy with no externally applied energy storage. This conceptual technology of self-powering based on conversion of mechanical energy to electrical energy can open a facile and robust avenue to diverse self-powered bio-implantable applications as well as commercial display applications. |
| 저자 |
정창규, 이건재
|
| 소속 |
한국과학기술원 (KAIST) |
| 키워드 |
energy harvesting; piezoelectric; self-powered; LED
|
| E-Mail |
|
