| 학회 |
한국화학공학회 |
| 학술대회 |
2019년 가을 (10/23 ~ 10/25, 대전컨벤션센터) |
| 권호 |
25권 2호, p.1248 |
| 발표분야 |
고분자 (Polymer) |
| 제목 |
Breath-figure molding of polymer transistors to implement flexible and high performance NOx sensors |
| 초록 |
Strategically designed polymer semiconductor thin film morphology with both high responsivity to the specific gas analyte and high signal transport efficiency is reported to realize highly selective/sensitive flexible NOx sensors. Breath-Figure (BF) molding of polymer semiconductor enables finely defined degree-of-porosity of film with high reproducibility, while conserving charge transport nature of organic field effect transistor (OFET). The optimized BF-OFET with donor-acceptor copolymer renders the maximum responsivity over 104 %, sensitivity over 774 %/ppm and limit of detection (LOD) of 110 ppb against NO exposure. From wide dynamic range of 0.2-10 ppm NO exposure, the response time was maintained as 100-300 seconds which is fast enough for safety purpose in practical application. Selectivity to NOx analytes is tested by comparing the responsivity of BF-OFET to various gases. Finally, flexible BF-OFET is demonstrated on a plastic substrate which maintains a sensitivity of 500 %/ppm and LOD of 215 ppb after 10,000 bending tests at 1% strain. |
| 저자 |
유성훈1, Henok Getachew Girma2, 심규민1, 윤성원1, 박종목2, 공호열2, 정대성1
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| 소속 |
1대구경북과학기술원, 2한국화학(연) |
| 키워드 |
고분자 |
| E-Mail |
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| 원문파일 |
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