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Room-temperature Si-SiN wafer bonding by nano-adhesion layer method

  • Ryuichi Kondou*
  • , Chenxi Wang
  • , Tadatomo Suga
  • *Corresponding author for this work
  • The University of Tokyo
  • Japan Science and Technology Agency

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Nano-Adhesion layer bonding method is proposed for heterogeneous wafer bonding at room temperature. The wafer surface is smooth, clean, and activated by nano-adhesion layer method which sputter cleaning and deposition Fe simultaneously. Si-Si and Si-SiN wafers were directly bonded at room temperature and the bonding strength was increased by optimizing Fe composition ratio on the Si surfaces. We analyzed atomic structure and bonding states at bonding interface by using cross-sectional HRTEM, STEM and EELS and discussed nano-adhesion layer formation, bonding interface structure, and bonding mechanisms. Our results show that bonding interfaces are composed of Si/FeSi/Si and Si/FeSi/FeSiN/SiN of Si-Si and Si-SiN, respectively.

Original languageEnglish
Title of host publication2010 Proceedings 60th Electronic Components and Technology Conference, ECTC 2010
Pages357-362
Number of pages6
DOIs
StatePublished - 2010
Externally publishedYes
Event60th Electronic Components and Technology Conference, ECTC 2010 - Las Vegas, NV, United States
Duration: 1 Jun 20104 Jun 2010

Publication series

NameProceedings - Electronic Components and Technology Conference
ISSN (Print)0569-5503

Conference

Conference60th Electronic Components and Technology Conference, ECTC 2010
Country/TerritoryUnited States
CityLas Vegas, NV
Period1/06/104/06/10

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