플래시광 열처리를 통한 압전 고분자의 결정성 향상 연구Enhanced Crystallinity of Piezoelectric Polymer via Flash Lamp Annealing
- Other Titles
- Enhanced Crystallinity of Piezoelectric Polymer via Flash Lamp Annealing
- Authors
- 이동훈; 정성민; 장학수; 하동주; 현동열; 우유미; 백창연; 이민구; 이경자; 박정환; 박귀일
- Issue Date
- Jul-2024
- Publisher
- 한국전기전자재료학회
- Keywords
- Piezoelectric; PVDF; Flash lamp annealing; Energy harvester
- Citation
- 전기전자재료학회논문지, v.37, no.4, pp 427 - 432
- Pages
- 6
- Journal Title
- 전기전자재료학회논문지
- Volume
- 37
- Number
- 4
- Start Page
- 427
- End Page
- 432
- URI
- https://scholarworks.bwise.kr/kumoh/handle/2020.sw.kumoh/28744
- ISSN
- 1226-7945
2288-3258
- Abstract
- The polymer crystallization process, promoting the formation of ferroelectric β-phase, is essential for developing polyvinylidene fluoride (PVDF)-based high-performance piezoelectric energy harvesters. However, traditional high-temperature annealing is unsuitable for the manufacture of flexible piezoelectric devices due to the thermal damage to plastic components that occurs during the long processing times. In this study, we investigated the feasibility of introducing a flash lamp annealing that can rapidly induce the β-phase in the PVDF layer while avoiding device damage through selective heating. The flash lightirradiated PVDF films achieved a maximum β-phase content of 76.52% under an applied voltage of 300 V and an on-time of 1.5 ms, a higher fraction than that obtained through thermal annealing. The PVDF-based piezoelectric energy harvester with the optimized irradiation condition generates a stable output voltage of 0.23 V and a current of 102 nA under repeated bendings. These results demonstrate that flash lamp annealing can be an effective process for realizing the mass production of PVDF-based flexible electronics.
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Collections - School of Mechanical System Engineering > 1. Journal Articles
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