Effect of Carboxylic Acid on Sintering of Inkjet-Printed Copper Nanoparticulate Films

被引：117

作者：

Woo, Kyoohee ^{[1
]}

Kim, Youngwoo ^{[1
]}

Lee, Byungyoon ^{[2
]}

Kim, Jonghee ^{[3
]}

Moon, Jooho ^{[1
]}

机构：

[1] Yonsei Univ, Dept Mat Sci & Engn, Seoul 120749, South Korea

[2] Chang Sung Co Ltd, R&D Ctr, Inchon 405100, South Korea

[3] Korea Inst Ceram Engn & Technol, Future Convergence Ceram Div, Seoul 153801, South Korea

来源：

ACS APPLIED MATERIALS & INTERFACES | 2011年 / 3卷 / 07期

关键词：

copper nanoparticles; inkjet printing; copper oxide reduction; carboxylic acid; conductivity; TRANSISTORS;

D O I：

10.1021/am2002907

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The reduction effect of various carboxylic acids on inkjet-printed, copper film was investigated. Carboxylic acids were exposed to the film by nitrogen gas that was bubbled through the liquid acids during the annealing process. It was observed that in the case of saturated monocarboxylic acid (formic, acetic, propionic, butyric), the acids with shorter hydrocarbon chains perform better in reducing the surface copper oxides in the printed copper conductive film. The printed films exposed to formic acid vapor exhibited the lowest resistivity (3.10 and 2.30 mu Omega cm when annealed at 200 and 250 degrees C, respectively). In addition, the oxalic acid more effectively reduces copper oxide than formic acid and its usage can shorten the annealing time for highly conductive printed copper film. This reductive annealing process allows fabrication of copper patterns with low resistivity, (3.82 mu Omega cm annealed at 250 degrees C) comparable to the resistivity of bulk copper.

引用

页码：2377 / 2382

页数：6

共 20 条

[1] Printable ion-gel gate dielectrics for low-voltage polymer thin-film transistors on plastic [J].