KR101664979B1 - 환원된 그래핀 옥사이드 필름의 제조방법, 상기 방법에 의해 제조되는 환원된 그래핀 옥사이드 필름, 및 상기 환원된 그래핀 옥사이드 필름을 포함하는 그래핀 전극 - Google Patents
환원된 그래핀 옥사이드 필름의 제조방법, 상기 방법에 의해 제조되는 환원된 그래핀 옥사이드 필름, 및 상기 환원된 그래핀 옥사이드 필름을 포함하는 그래핀 전극 Download PDFInfo
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Abstract
Description
도 2a 는, 본원의 일 실시예에 따른 CRGO 필름의 SEM 이미지이다.
도 2b는, 본원의 일 실시예에 따른 TRGO 필름의 SEM 이미지이다.
도 2c는, 본원의 일 실시예에 따른 PRGO 필름의 SEM 이미지이다.
도 2d는, 본원의 일 실시예에 따른 CRGO 필름의 AFM 이미지이다.
도 2e는, 본원의 일 실시예에 따른 TRGO 필름의 AFM 이미지이다.
도 2f는, 본원의 일 실시예에 따른 PRGO 필름의 AFM 이미지이다.
도 3은, 본원의 일 구현예에 따른 TRGO 및 PRGO 필름의 제조공정의 열 흐름을 비교하는 모식도이다.
도 4a는, 본원의 일 실시예에 따른 CRGO 필름의 XPS 스펙트럼을 나타낸다.
도 4b는, 본원의 일 실시예에 따른 CRGO 필름의 XPS C1 스펙트럼을 나타낸다.
도 4c는, 본원의 일 실시예에 따른 TRGO 필름의 XPS 스펙트럼을 나타낸다.
도 4d는, 본원의 일 실시예에 따른 TRGO 필름의 XPS C1 스펙트럼을 나타낸다.
도 4e는, 본원의 일 실시예에 따른 PRGO 필름의 XPS 스펙트럼을 나타낸다.
도 4f는, 본원의 일 실시예에 따른 PRGO 필름의 XPS C1 스펙트럼을 나타낸다.
도 5는, 본원의 일 실시예에 따른 CRGO, TRGO 및 PRGO 필름의 XRD분석 스펙트럼이다.
도 6은, 본원의 일 실시예에 따른 CRGO, TRGO 및 PRGO 필름의 투과도를 나타내는 그래프이다.
도 7은, 본원의 일 실시예에 따른 a) CRGO, TRGO 및 PRGO 필름의 압력에 따른 시트 저항, 및 b) PRGO의 벤딩 수에 따른 시트저항 변화를 나타내는 그래프이다.
도 8a는, 본원의 일 실시예에 따른 유기 박막 트랜지스터의 사진이다.
도 8b는, 본원의 일 실시예에 따른 유기 박막 트랜지스터의 드레인 전류-드레인 전압을 나타내는 그래프이다.
도 8c는, 본원의 일 실시예에 따른 유기 박막 트랜지스터의 드레인 전류-게이트 전압을 나타내는 그래프이다.
Claims (9)
- 투명하고 유연한 플라스틱 기재 상에 그래핀 옥사이드 분산 용액을 코팅하여 그래핀 옥사이드 박막을 형성하고;
상기 그래핀 옥사이드 박막을 화학적 환원법 및 압력-보조식 열 환원법을 각각 이용하여 순차적으로 환원시켜 투명하고 유연한 환원된 그래핀 옥사이드(reduced graphene oxide : rGO) 필름을 형성하는 단계
를 포함하며,
상기 화학적 환원법은 70℃ 내지 200℃의 온도 범위에서 수행되는 것이며,
상기 압력-보조식 열 환원법은 상기 그래핀 옥사이드 박막이 형성된 투명하고 유연한 플라스틱 기재의 상부면 및 하부면에 1 kgf/cm2 내지 2,000 kgf/cm2 범위의 압력 및 70℃ 내지 200℃의 온도 범위의 열을 가하여 상기 그래핀 옥사이드 박막을 환원시키는 것인,
플라스틱 기재 상에 형성된 투명하고 유연한 환원된 그래핀 옥사이드 필름의 제조방법.
- 제 1 항에 있어서,
상기 투명하고 유연한 플라스틱 기재는 폴리에테르설폰, 폴리이미드, 폴리카보네이트, 폴리에틸렌나프탈레이트, 및 폴리에틸렌테레프탈레이트로 이루어진 군으로부터 선택되는 것을 포함하는 것인, 플라스틱 기재 상에 형성된 투명하고 유연한 환원된 그래핀 옥사이드 필름의 제조방법.
- 제 1 항에 있어서,
상기 투명하고 유연한 플라스틱 기재는 산소 또는 질소 플라즈마 처리에 의하여 개질되는 것을 포함하는 것인, 플라스틱 기재 상에 형성된 투명하고 유연한 환원된 그래핀 옥사이드 필름의 제조방법.
- 제 1 항에 있어서,
상기 화학적 환원법은 히드라진, 소듐보로하이드레이트, 및 황산으로 이루어진 군으로부터 선택되는 환원제를 이용하는 것인, 플라스틱 기재 상에 형성된 투명하고 유연한 환원된 그래핀 옥사이드 필름의 제조방법.
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KR102161769B1 (ko) * | 2019-02-11 | 2020-10-06 | 한국화학연구원 | 핫 프레스를 이용한 향상된 전기적 특성을 갖는 박리흑연 전극을 포함하는 전자 소자의 제조방법 |
KR102413334B1 (ko) * | 2021-08-04 | 2022-06-27 | 동의대학교 산학협력단 | 팽창성 흑연(expandable graphite)을 사용한 전도성 박막의 제조방법 |
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