Effect of Sintering Temperature on Electrical Characteristics of Screen-Printed Ag Nanopaste on FR4 Substrate

被引:7
|
作者
Lee, Young-Chul [1 ]
Ahn, Jee-Hyuk [1 ]
Kim, Kwang-Seok [1 ]
Yoon, Jeong-Won [1 ]
Kim, Jong-Woong [2 ]
Kim, Yongil [1 ]
Jung, Seung-Boo [1 ]
机构
[1] Sungkyunkwan Univ, Sch Adv Mat Sci & Engn, Suwon 440746, South Korea
[2] Korea Elect Technol Inst, Display Components & Mat Res Ctr, Songnam 463816, South Korea
关键词
High Frequency; Screen Printing; Ag Nanopaste; Sintering Temperature; Direct Printing; SILVER NANOPARTICLES; EPOXY-RESIN;
D O I
10.1166/jnn.2011.4367
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
We investigated the feasibility of a printing technology for Ag circuit formation on a FR4 substrate. A conductive paste containing Ag nanoparticles (73 wt%) of 20-50 nm diameter was screen printed on an FR4 substrate and sintered under a sintering temperature ranging from 100 degrees C to 200 degrees C for 30 min. We carried out the thermal analysis of the Ag nanopaste to confirm the suitability of the set-up conditions. To investigate the sintering degree with various temperatures, fractured cross-sections were observed by field emission scanning electron microscopy (FESEM). For electrical characterization of the printed Ag circuit, a four-point probe method was used to measure the direct current (DC) resistivity, while a network analyzer and Cascade's probe system in the frequency range from 10 MHz to 20 GHz were used to measure the scattering parameters (S-parameter) of the sintered Ag conducting patterns. The resistivity under the application of a DC signal decreased as the temperature increased. The measured S-parameters indicated that the electrical losses decreased as the sintering temperature increased due to the interparticle neck formation after heat treatment at high temperatures.
引用
收藏
页码:5915 / 5920
页数:6
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