Optimizing activation process for strong direct bonding between diamond and Si substrates

S. Okita, T. Matsumae, Y. Kurashima, H. Takagi, H. Umezawa, M. Hayase

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

Abstract

We optimized process parameters to form strong bonding between diamond and Si substrates. Our previous study revealed that a diamond (100) substrate cleaned with a mixture of ammonia and hydrogen peroxide solutions can be bonded with a plasma-activated semiconductor substrate. In this study, when an oxygen plasma activation time was optimized, the shear strength of the bonded diamond and Si substrates satisfied a military standard for electronics. We believe that the semiconductor device strongly bonded on the diamond heat spreader can contribute to future high-power and high-frequency devices.

Original languageEnglish
Title of host publication2023 International Conference on Electronics Packaging, ICEP 2023
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages261-262
Number of pages2
ISBN (Electronic)9784991191152
DOIs
Publication statusPublished - 2023
Event22nd International Conference on Electronics Packaging, ICEP 2023 - Kumamoto, Japan
Duration: 19 Apr 202322 Apr 2023

Publication series

Name2023 International Conference on Electronics Packaging, ICEP 2023

Conference

Conference22nd International Conference on Electronics Packaging, ICEP 2023
Country/TerritoryJapan
CityKumamoto
Period19/04/2322/04/23

Keywords

  • diamond
  • direct bonding
  • hydrophilic bonding
  • plasma activation

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