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NTIS 바로가기공업화학 = Applied chemistry for engineering, v.29 no.6, 2018년, pp.782 - 788
심상보 (창성나노텍(주)) , 한종대 (창원대학교 공과대학 토목환경화공융합공학부)
Submicron copper-silver core-shell (Cu@Ag) particles were synthesized using the sonochemical combined transmetallation reaction and the application to printed electronics as a low cost conductive paste was evaluated.
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핵심어 | 질문 | 논문에서 추출한 답변 |
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전도성 페이스트란 무엇인가? | 가격 경쟁력을 고려한 저가형 유연 기판(PET, PEN 등)에 적용하기 위해서는 추가적으로 저온 소결 공정이 필요하며 공정에 적합한 재료 개발이 필요하다. 일반적으로, 전도성 페이스트는 전도성을 갖는 금속 충전제, 유동성을 갖는 유기용액 및 다른 첨가제로 구성된 복합 화합물이다. 그중에서도 금속 충전제는 입자 사이의 접촉에 의한 전기적 특성을 결정하기 때문에 가장 중요한 요소이며 대부분을 차지한다[1-5]. | |
인쇄용 전자부품 산업에서 많이 사용되는 공정은 무엇인가? | 지난 10년 동안 인쇄용 전자부품 분야, 즉 전자부품을 제조하기 위한 고체 및 연성 기판상에 인쇄기술의 적용은 엄청난 관심을 받아왔다. 현재 인쇄용 전자부품 산업은 전도성 페이스트 또는 잉크를 사용한 포토 리소그래피(photolithography) 및 스크린 프린팅(screen printing) 공정을 가장 많이 사용한다. 포토 리소그래피 공정은 나노미터수준까지 패턴을 적용할 수 있지만, 증착, 코팅, 경화, 에칭 및 세정과 같은 많은 단계의 공정이 필요하여 시간과 비용이 많이 든다. | |
Ag 나노입자의 문제점은 무엇인가? | Ag 나노입자(Ag nanoparticles, NPs)는 높은 전기 전도성, 열 전도성 및 산화 안정성 때문에 전도성 페이스트 및 잉크의 금속 충전제로 가장 일반적으로 사용된다[6,7]. 그러나 Ag의 매우 높은 원가로 광범위한 산업 응용이 제한된다. Cu는 Ag를 대체할 잠재적인 재료 중 하나이다. |
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