赵宁

Professor   Supervisor of Doctorate Candidates   Supervisor of Master's Candidates

Main positions:材料科学与工程学院副院长

Gender:Male

Alma Mater:Dalian University of Technology

Degree:Doctoral Degree

School/Department:School of Materials Science and Engineering

Discipline:Materials Science

E-Mail:zhaoning@dlut.edu.cn


Paper Publications

A Study on the Bonding Conditions and Nonconductive Filler Contents on Cationic Epoxy-Based Sn-58Bi Solder ACFs Joints for Reliable Flex-on-Board Applications

Hits:

Indexed by:期刊论文

Date of Publication:2017-12-01

Journal:IEEE TRANSACTIONS ON COMPONENTS PACKAGING AND MANUFACTURING TECHNOLOGY

Included Journals:SCIE、Scopus

Volume:7

Issue:12

Page Number:2087-2094

ISSN No.:2156-3950

Key Words:Flex-on-board application; nonconductive filler; solder anisotropic conductive film (ACF); thermal compression bonding

Abstract:Although cationic epoxy is reported as the best adhesive candidate for Sn-58Bi solder anisotropic conductive films (ACFs) reliability, ACFs bonding conditions have not been optimized yet. In this paper, ACFs bonding parameters, such as pressure and time at 200 degrees C, have been optimized to produce flex-on-board (FOB) applications with a higher reliability, using the cationic epoxy-based Sn-58Bi solder ACFs joints with 10-mu m average sizes Al2O3 spacers. It was difficult to achieve above 90% cure degree by less than 20 s at 200 degrees C, and Sn elements started to diffuse from micrometer-sized Sn-58Bi joints after 10 s. Both 80% and 90% cure degree can provide 520-kgf/cm peel adhesion strength. To obtain a larger amount of Sn phase remaining at solder joints for lower contact resistance and higher reliability and adhesion strength, 10 s at 200 degrees C bonding condition was selected. As large amounts of Al2O3 spacers were added into ACFs resin, the reliability of joints became lower. Direct contacts of two electrodes were obtained at 1.5 wt% Al2O3 spacers, however, no direct electrode contact was observed at 3 wt% Al2O3 spacers. As a summary, optimized bonding conditions at 200 degrees C for 10 s at 1-MPa pressure and solder ACFs with 3 wt% 10-mu m diameter Al2O3 spacers were suggested for nondirect contacts of electrodes interconnection and higher reliability of cationic epoxy-based Sn-58Bi solder ACFs joints for FOB applications.

Pre One:Stability of Multilayered Ag/Ag3Sn/Sn Films Non-cyanide Electroplateded for high-reflective back-electrode

Next One:Continuous epitaxial growth of extremely strong Cu6Sn5 textures at liquid-Sn/(111)Cu interface under temperature gradient

Profile

赵宁,工学博士,教授,博士生导师,现任材料科学与工程学院副院长。《Scientific Reports》期刊编委,IEEE会员、IEEE-EPS会员,中国电子学会(电子制造与封装技术分会)、中国材料研究学会、中国机械工程学会高级会员。

2003年本科毕业于东北大学材料物理专业,2008年博士毕业于大连理工大学材料学专业。2009年至2011年在中科院微电子研究所系统封装技术研究室从事博士后研究,2011年加入大连理工大学材料学院,同年评为副教授,2017年评为博士生导师,2018年评为教授。2016年至2017年在美国佐治亚理工学院做访问学者,合作学者为美国工程院院士、中国工程院外籍院士C.P. Wong教授。

主要从事电子封装微互连材料与技术的基础理论及应用研究,重点围绕微互连方法与成型机理,微焊点晶粒生长调控、组织演变、热迁移行为与可靠性测试分析,晶圆级互连技术,无铅焊料及BGA焊球开发与组织控制,低电阻率电镀铜膜/线等方面开展深入研究。

主持国家自然科学基金(4项)、省部级科研项目十余项,参与多项国家科技重大专项等项目。在Acta Mater.、Mater. Des.、J. Mater. Sci. Tech.、Appl. Phys. Lett.、Scripta Mater.、J. Mater. Process. Tech.、Sci. Rep.、J. Alloys Compd.、Appl. Surf. Sci.、Mater. Charact.、Intermetallics、Mater. Res. Bull.、J. Appl. Phys.、Mater. Lett.、Mater. Chem. Phys.、J. Mater. Res.、J. Electron. Mater.、物理学报、金属学报、中国有色金属学报(英文版)、稀有金属材料与工程等期刊上发表学术论文100余篇;在ECTC、ICEPT、CSTIC、EPTC等国际学术会议上发表EI论文60余篇,5次获得最佳论文奖;获中国发明专利授权25项。入选辽宁省“百千万人才工程”、大连市高层次人才计划。

指导学生:

在读硕士生11人,博士生6人。

已毕业博士生3、硕士生15人。

指导研究生多次获得国家奖学金、省优秀毕业生、市三好学生、校优秀博士/硕士研究生、优秀学位论文等荣誉。

 

欢迎有意从事微电子制造、微电子封装行业,具有材料、机械、物理、微电子专业背景,勤奋好学、积极乐观的学子们加入本课题组!