AUTHOR=Dai Chenyi , Wang Yong , Lin Pengrong , Hao Zilin , Wang Chaoyang , Feng Xiaocheng , Liu Xueming TITLE=Achieving high-quality silver sintered joint for highly-reliable schottky barrier diodes via pressureless method JOURNAL=Frontiers in Materials VOLUME=10 YEAR=2023 URL=https://www.frontiersin.org/journals/materials/articles/10.3389/fmats.2023.1297827 DOI=10.3389/fmats.2023.1297827 ISSN=2296-8016 ABSTRACT=

The fabrication of silver joints was done using the pressureless sintering technology to suit the demand of high-reliability schottky barrier diodes (SBD). Porosity of 10.6% and shear strength of 39.6 MPa were reached under the optimized parameters of 290°C sintering temperature and 40 min residence time. The sintered joint demonstrated good mechanical/thermal/electrical performance in the ultimate reliability assessment testing, including the temperature cycling test, second sintering test, steady-state lifetime test, and intermittent lifetime test. This study demonstrated the viability of pressureless sintering of silver joints with good high-temperature reliability, which has significant application potential for aeronautical high-reliability power electronics.