Bonding of LiNbO3and Si wafers at room temperature using Si nanolayers

Kaname Watanabe, Jun Utsumi, Ryo Takigawa

研究成果: Contribution to journalArticle査読

抄録

We report the room temperature bonding of LiNbO3 and Si wafers based on the use of Si nanolayers. The proposed method employs physical sputtering, which simultaneously activates the surface of an etched Si wafer and forms a Si nanolayer on the surface of a LiNbO3 wafer. Following sputtering, both wafers are immediately brought into contact and the newly formed Si nanolayer acts as a nanoadhesive. The data presented herein demonstrate that this technique is more effective at directly bonding LiNbO3 and Si than the conventional surface-Activated bonding method. Following activation, the bonded surface energy, which reflects the bond strength, was estimated to be approximately 2.2 J m-2. This result indicates that the bonding was strong enough to withstand the processes associated with the fabrication of microelectronics devices, including wafer thinning.

本文言語英語
論文番号SCCL14
ジャーナルJapanese journal of applied physics
60
DOI
出版ステータス出版済み - 6 2021

All Science Journal Classification (ASJC) codes

  • 工学(全般)
  • 物理学および天文学(全般)

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