은 나노입자의 합성과 이를 활용한 도전성 페이스트의 제조

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Recently, metal nanoparticles have an attractive attention because they have superior properties to other nano-sized particles, such as their electrical conductivities, optical properties, catalytic activity, and magnetic properties. Above all things, silver particles are an important substance of conductive inks, pastes and adhesives for various electronic devices. Therefore, it is necessary to develop a simple and effective synthesis method of nano-sized silver particles on a large scale.
Recently, one-dimensional (1D) silver nanostructures have been extensively studied because the rod-like silver particles have an dvantage for adhesive strength on a substrate in silver electrode. It is also possible to reduce the temperature for heat treatment by application of nano-sized silver particles.
In this work, nano-sized silver particles were prepared by the chemical reduction method using surfactants. The effect of surfactants on the morphology of the prepared silver nanoparticles was investigated and we intended to synthesize a rod-like silver particle with high aspect ratio using nano-sized silver seeds prepared by the chemical reduction method. The molar ratio of surfactants and silver nitrate was controlled to prepare the rod-like silver particles. lastly, silver paste using nano-sized silver particles were prepared. Microstructures and related specific resistance of metallized silver thick films with sintering temperatures were investigated.
As a result, this study demonstrated that the morphology of silver nanoparticles was changed with various experimental conditions, i.e, kind of surfactants, For example, the shape and size distribution of silver nanoparticles are strongly dependent on the molar ratio of PVP/AgNO3 and SDS/AgNO3.
Rod-like silver particles were also prepared by using a nano-sized silver seeds. When the molar ratio of silver nitrate and CTAB was 0.5, the rod-like silver particles were obtained. In addition, When the molar ratio of silver nitrate and SDS was 0.1, rod-like particles were formed with a mean aspect ratio of from 5 to 12.
Lastly, silver paste prepared from nano-sized silver particles showed the low electrical resistance and sintering temperature.
Alternative Title
Synthesis of Silver Nanoparticles and Their Applications for Conductive Paste
Alternative Author(s)
Park, Keun-Ju
조선대학교 대학원
일반대학원 첨단소재공학과
Awarded Date
Table Of Contents
List of Tables = Ⅲ
List of Figures = Ⅳ
제 1 장. 서론 = 1
제 2 장. 이론적 배경 = 4
제 1 절. Silver 나노입자 = 4
제 2 절. 전극재료 = 7
1. Silver 페이스트의 활용 = 7
2. PDP 전극 = 8
제 3 절. Silver 나노입자 제조 = 13
제 4 절. 계면활성제의 역할 = 16
제 3 장. 반응조건에 따른 silver 나노입자의 미세구조의 변화 = 24
제 1 절. 서론 = 24
제 2 절. 실험방법 = 26
제 3 절. 결과 및 고찰 = 30
1. 계면활성제 종류 및 농도에 따른 silver 입자의 특성 변화 = 30
2. 종자결정을 이용한 막대상 silver 입자의 제조 = 38
제 4 절. 결론 = 48
제 4 장. silver 나노입자로부터 저온소성 silver paste의 제조 및 그 특성 = 49
제 1 절. 서론 = 49
제 2 절. 실험방법 = 51
제 3 절. 결과 및 고찰 = 53
제 4 절. 결론 = 64
제 5 장. 종합 결론 = 65
조선대학교 대학원
박근주. (2006). 은 나노입자의 합성과 이를 활용한 도전성 페이스트의 제조.
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