• 한국전기화학회:학술대회논문집
• /
• 한국전기화학회 2000년도 추계총회 및 학술발표회
• /
• pp.49-49
• /
• 2000

• 한국전기화학회:학술대회논문집
• /
• 한국전기화학회 2003년도 추계총회 및 학술발표회
• /
• pp.61-61
• /
• 2003

• 한국에너지공학회:학술대회논문집
• /
• 한국에너지공학회 1998년도 추계 학술발표회 논문집
• /
• pp.297-300
• /
• 1998

• 한국분말야금학회:학술대회논문집
• /
• 한국분말야금학회 1996년도 추계학술강연 및 발표대회 강연 및 발표논문 초록집
• /
• pp.15-16
• /
• 1996

• 한국재료학회:학술대회논문집
• /
• 한국재료학회 1996년도 재료학회 춘계학술발표회
• /
• pp.148-148
• /
• 1996

• 한국전기화학회:학술대회논문집
• /
• 한국전기화학회 2003년도 연료전지심포지움 2003논문집
• /
• pp.63-68
• /
• 2003

• 대한용접접합학회:학술대회논문집
• /
• 대한용접접합학회 1990년도 특별강연 및 추계학술발표 개요집
• /
• pp.45-49
• /
• 1990

• Transactions on Electrical and Electronic Materials
• /
• 제11권6호
• /
• pp.257-260
• /
• 2010

Zinc oxide (ZnO) bottom-contact thin-film transistors (TFTs) were prepared by the use of injector type atomic layer deposition. Two hybrid gate oxide systems of different polarity polymers with silicon oxide were examined with the aim of improving the properties of the transistors. The mobility and threshold voltage of a ZnO TFT with a poly(4-dimethylsilyl styrene) (Si-PS)/silicon oxide hybrid gate dielectric had values of 0.41 $cm^2/Vs$ and 24.4 V, and for polyimide/silicon oxide these values were 0.41 $cm^2/Vs$ and 24.4 V, respectively. The good hysteresis property was obtained with the dielectric of hydrophobicity. The solid output saturation behavior of ZnO TFTs was demonstrated with a $10^6$ on-off ratio.

• 전기화학회지
• /
• 제21권4호
• /
• pp.80-87
• /
• 2018

웨어러블 디바이스, 전기자동차와 에너지저장시스템에 대한 전력 수요가 증가함에 따라 리튬이온 전지에 있어서 안전성은 가장 중요한 요소가 되었다. 이러한 문제를 해결하기 위해 가연성의 유기 액체전해질이 불연성의 고체전해질로 대체된 전고체 전지를 제조하려는 연구들이 진행되고 있다. 그러나 고체전해질은 자체 이온전도도가 상대적으로 낮고 전극/전해질 계면에서 높은 저항이 발생하므로 실질적인 활용에 제약이 있었다. 이에 유무기 소재로 구성된 복합전해질은 고체전해질의 단점을 극복할 수 있는 대안으로 떠오르고 있다. 본 연구에서는 PEO 전해질과 LLZO 고체전해질을 복합화하여 전해질을 제조하였고, LLZO 고체전해질 함량에 따라 결정성, 형상 및 전기화학 성능 분석을 진행하였다. 결과로부터 PEO 전해질 내에 LLZO 고체전해질의 최적 함량 및 균일한 분포가 전체 복합전해질의 이온전도도 향상에 중요한 요소임을 확인하였다.

• Corrosion Science and Technology
• /
• 제7권3호
• /
• pp.145-151
• /
• 2008

Material degradation such as high temperature oxidation of metallic material is a severe problem in energy generation systems or manufacturing industries. The metallic materials are oxidized to form oxide films in high temperature environments. The oxide films act as diffusion barriers of oxygen and metal ions and thereafter decrease oxidation rates of metals. The metal oxidation is, however, accelerated by mechanical fracture and spalling of the oxide films caused by thermal stresses by repetition of temperature change, vibration and by the impact of solid particles. It is therefore very important to investigate mechanical properties and adhesion of oxide films in high temperature environments, as well as the properties in a room temperature environment. The oxidation tests were conducted for Ni and Ni-Co alloy under high temperature corrosive environments. The hardness distributions against the indentation depth from the top surface were examined at room temperature. Dynamic indentation tests were performed on Ni oxide films formed on Ni surfaces at room and high temperature to observe fractures or cracks generated around impact craters. As a result, it was found that the mechanical property as hardness of the oxide films were different between Ni and Ni-Co alloy, and between room and high temperatures, and that the adhesion of Ni oxide films was relatively stronger than that of Co oxide films.