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High performance SAW devices with other element doped AlN films / layered structure substrates

Research Project

Project/Area Number 19K15024
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 21050:Electric and electronic materials-related
Research InstitutionUniversity of Yamanashi

Principal Investigator

Masashi Suzuki  山梨大学, 大学院総合研究部, 助教 (60763852)

Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2021: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2020: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2019: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Keywords弾性表面波 / AlN薄膜 / 層構造基板 / 多層構造基板 / SAWデバイス / 分極制御 / 周波数フィルタ / 窒化アルミニウム / 弾性表面波デバイス / 他元素ドープAlN膜
Outline of Research at the Start

現在,弾性表面波(SAW)デバイスは移動通信機器の周波数フィルタとして実用化されている。さらなる通信の大容量化,高速化に向けて,より高周波帯域の次世代移動通信システムへの移行が検討されているが,現状の圧電単結晶基板単体のデバイス構造では実現困難とされている。そこで本課題では,高周波動作SAWフィルタに要求される「高SAW位相速度, 高結合係数 ,低SAW伝搬減衰,高い温度安定性 」のすべてを満たし,かつスパッタ法での形成も容易な「他元素ドープAlN圧電層/高音速層/高い温度安定性基板」からなる多層構造基板の創成とその基板を用いた縦型漏洩SAWデバイスの開発に挑戦する。

Outline of Final Research Achievements

In theoretical analysis for other metal element doped AlN film SAW devices, we demonstrated that polarity inverted ScAlN films/high-velocity layers/substrates for high order RSAW modes and c-axis parallel ScAlN films/quartz substrates for LLSAW modes had high phase velocities, high coupling factors and low acoustic attenuation.
In film growth for polarity inverted multilayered ScAlN films, we confirmed that Si doping to AlN films led to polarity inversion from Al-polarity to N-polarity. The polarity inverted SiAlN/AlN films could be fabricated. However, polarity inversion of ScAlN films by Si doping were not observed. We will try to control polarity direction of ScAlN films by further optimizing the concentration of Sc and Si doping in AlN films.

Academic Significance and Societal Importance of the Research Achievements

現在,弾性表面波(SAW)デバイスは移動通信機器の周波数フィルタとして実用化されている。今後さらなる通信の大容量化,高速化に向けて,より高周波帯域の次世代移動通信システムへの移行が検討されている。しかし,その高周波動作に対応できるSAWフィルタは現状の圧電単結晶基板単体のデバイス構造では実現困難とされている。そこで本課題では,「高SAW位相速度, 高結合係数,低SAW伝搬減衰」のすべてを満たし,かつ形成も容易な 高結合係数を実現する他元素ドープAlN圧電層/伝搬減衰を抑制する高音速層/高音速基板からなる多層構造基板の創成とその基板を用いたSAWデバイスの開発を行った。

Report

(4 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (33 results)

All 2022 2021 2020 2019 Other

All Journal Article (6 results) (of which Peer Reviewed: 5 results) Presentation (24 results) (of which Int'l Joint Research: 10 results,  Invited: 2 results) Remarks (3 results)

  • [Journal Article] RFマグネトロンスパッタ法によるc軸配向CrAlN膜の形成と圧電特性評価2022

    • Author(s)
      鈴木雅視、髙野佑成、垣尾省司
    • Journal Title

      超音波TECHNO

      Volume: 33

    • Related Report
      2021 Annual Research Report
  • [Journal Article] Enhancement of coupling factor in 0th to 4th mode Rayleigh surface acoustic waves on polarity inverted multilayered ScAlN film/AlN and BN substrates2022

    • Author(s)
      Takano Yusei、Suzuki Masashi、Kakio Shoji
    • Journal Title

      Japanese Journal of Applied Physics

      Volume: 61 Issue: SG Pages: SG1059-SG1059

    • DOI

      10.35848/1347-4065/ac5650

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Analysis of propagation characteristics of Rayleigh surface acoustic waves on Yb0.33Al0.67N piezoelectric films/high-velocity substrates2022

    • Author(s)
      Suzuki Masashi、Kakio Shoji
    • Journal Title

      Japanese Journal of Applied Physics

      Volume: 61 Issue: SG Pages: SG1014-SG1014

    • DOI

      10.35848/1347-4065/ac48d2

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Increase of electromechanical coupling coefficient kt2 in (0001)-oriented AlN films by chromium doping2021

    • Author(s)
      Takano Yusei、Hayakawa Ryusei、Suzuki Masashi、Kakio Shoji
    • Journal Title

      Japanese Journal of Applied Physics

      Volume: 60 Issue: SD Pages: SDDC08-SDDC08

    • DOI

      10.35848/1347-4065/abef0c

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Analysis of leaky surface acoustic wave characteristics propagating on high piezoelectric ScAlN film/high velocity quartz substrate2020

    • Author(s)
      Suzuki Masashi、Kakio Shoji
    • Journal Title

      Japanese Journal of Applied Physics

      Volume: 59 Issue: SK Pages: SKKC07-SKKC07

    • DOI

      10.35848/1347-4065/ab867f

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Electromechanical Coupling Coefficient kt2 of Cr doped AlN Films Grown by Sputtering Deposition2019

    • Author(s)
      Suzuki Masashi、Kakio Shoji
    • Journal Title

      Proceedings of 2019 IEEE Ultrasonics Symposium

      Volume: 1 Pages: 716-719

    • DOI

      10.1109/ultsym.2019.8926302

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Presentation] Sc,Yb ドープ AlN 分極反転薄膜/高音速基板上の高次モード RSAW における結合係数増幅2022

    • Author(s)
      髙野佑成、鈴木雅視、垣尾省司
    • Organizer
      圧電材料・デバイスシンポジウム 2022
    • Related Report
      2021 Annual Research Report
  • [Presentation] 極性反転 SiAlN/AlN 多層膜 HBAR の形成、評価と極性反転 AlNFBAR の共振特性解析2022

    • Author(s)
      関本淳、鈴木雅視、垣尾省司
    • Organizer
      圧電材料・デバイスシンポジウム 2022
    • Related Report
      2021 Annual Research Report
  • [Presentation] GeドープによるAlN膜の極性制御と高次モード薄膜共振子への応用2022

    • Author(s)
      関本淳、鈴木雅視、垣尾省司
    • Organizer
      第68回応用物理学会春季学術講演会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 極性反転ScAlN薄膜/高音速窒化物基板上の2次モードRSAW伝搬特性2021

    • Author(s)
      髙野佑成、鈴木雅視、垣尾省司
    • Organizer
      第82回応用物理学会秋季学術講演会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 極性反転SiAlN/AlN多層膜の形成と高次モード薄膜音響共振子への応用2021

    • Author(s)
      関本淳、鈴木雅視、垣尾省司
    • Organizer
      第82回応用物理学会秋季学術講演会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Analysis of Higher-Order Mode SAW Propagation Characteristics on Polarity Inverted ScAlN Films/High Velocity III-V Nitride Substrate2021

    • Author(s)
      Takano Yusei、Suzuki Masashi、Kakio Shoji
    • Organizer
      IEEE international Ultrasonics Symposium 2021
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Polarity Control of (0001) Oriented AlN Films by Si Doping and Applications to Polarity Inverted SiAlN/AlN Film Bulk Acoustic Wave Resonators2021

    • Author(s)
      Jun Sekimoto、Suzuki Masashi、Kakio Shoji
    • Organizer
      IEEE International Ultrasonics Symposium 2021
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 他元素(Si, Sc, Yb)ドープ AlN 圧電膜を用いた BAW・SAW デバイスの開発2021

    • Author(s)
      鈴木雅視
    • Organizer
      第50回EMシンポジウム
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] Theoretical analysis of Rayleigh SAW propagation characteristics on YbAlN films/ high velocity substrates2021

    • Author(s)
      Masashi Suzuki,Shoji Kakio
    • Organizer
      The 42nd Symposium on Ultrasonic Electronics
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Enhancement of coupling factor K2 in higher-mode RSAW on polarity inverted ScAlN films/high velocity AlN or BN substrates2021

    • Author(s)
      Takano Yusei、Suzuki Masashi、Kakio Shoji
    • Organizer
      The 42nd Symposium on Ultrasonic Electronics
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Growth of polarity inverted SiAlN/AlN multilayered films and applications to high-order mode BAW resonators2021

    • Author(s)
      Jun Sekimoto、Suzuki Masashi、Kakio Shoji
    • Organizer
      The 42nd Symposium on Ultrasonic Electronics
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 次世代情報通信端末向け高周波数弾性表面波(SAW)フィルタの開発2021

    • Author(s)
      鈴木雅視
    • Organizer
      早稲田大学各務記念材料技術研究所 オープンセミナー
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] Si添加による極性制御を用いた2層極性反転SiAlN/AlN膜音響共振子2021

    • Author(s)
      関本淳、鈴木雅視、垣尾省司
    • Organizer
      第68回応用物理学会春季学術講演会
    • Related Report
      2020 Research-status Report
  • [Presentation] Analysis of Leaky Surface Acoustic Wave Propagation Characteristics on Piezoelectric ScAlN Layer / Quartz Substrate2020

    • Author(s)
      Masashi Suzuki, Shoji Kakio
    • Organizer
      2020 IEEE Ultrason Symposium
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] ScAlN圧電層 / LiNbO3圧電基板での縦型リーキーSAW伝搬におけるオイラー角の検討2020

    • Author(s)
      高野 佑成、鈴木 雅視、垣尾 省司
    • Organizer
      第81回応用物理学会秋季学術講演会
    • Related Report
      2020 Research-status Report
  • [Presentation] Cr ドープ c 軸配向 AlN 薄膜の圧電特性2020

    • Author(s)
      高野 佑成、早川竜盛、鈴木 雅視、垣尾 省司
    • Organizer
      第49回EMシンポジウム
    • Related Report
      2020 Research-status Report
  • [Presentation] Increase of electromechanical coupling coefficient in c-axis oriented AlN films by chromium doping at low concentrations2020

    • Author(s)
      Yusei Takano, Ryusei Hayakawa, Masashi Suzuki, Shoji Kakio
    • Organizer
      The 41st Symposium on Ultrasonic Electronics
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] Crドープがc軸配向AlN薄膜の結晶配向性と電気機械結合係数に及ぼす影響2020

    • Author(s)
      高野 佑成、早川 竜盛、鈴木 雅視、垣尾 省司
    • Organizer
      第67回応用物理学会春季学術講演会
    • Related Report
      2019 Research-status Report
  • [Presentation] RFマグネトロンスパッタ法により形成したc軸配向CrAlN膜の電気機械結合係数評価2020

    • Author(s)
      高野 佑成、早川 竜盛、鈴木 雅視、垣尾 省司
    • Organizer
      圧電材料・デバイスシンポジウム2020
    • Related Report
      2019 Research-status Report
  • [Presentation] Theoretical Analysis of Leaky SAW Propagation Characteristics on ScAlN film/Quartz2019

    • Author(s)
      Masashi Suzuki and Shoji Kakio
    • Organizer
      The 40th Symposium on Ultrasonic Electronics
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Piezoelectric Characteristics of c-Axis Oriented CrAlN Films Grown by RF Magnetron Sputtering2019

    • Author(s)
      Yusei Takano, Ryusei Hayakawa, Masashi Suzuki, and Shoji Kakio
    • Organizer
      The 40th Symposium on Ultrasonic Electronics
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Electromechanical Coupling Coefficient Kt2 of Cr Doped AlN Films Grown by Sputtering Deposition2019

    • Author(s)
      Masashi Suzuki and Shoji Kakio
    • Organizer
      2019 IEEE ultrasonics symposium
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] ScAlN薄膜/回転Yカット水晶基板上LSAWにおける最適構造探索2019

    • Author(s)
      鈴木雅視、垣尾省司
    • Organizer
      第80回応用物理学会秋季学術講演会
    • Related Report
      2019 Research-status Report
  • [Presentation] ScAlN 圧電層/水晶基板上を伝搬する SAW 特性理論解析2019

    • Author(s)
      鈴木雅視、垣尾省司
    • Organizer
      第48回EMシンポジウム
    • Related Report
      2019 Research-status Report
  • [Remarks] 研究者総覧

    • URL

      http://nerdb-re.yamanashi.ac.jp/Profiles/338/0033743/profile.html?lang=ja&#ronbun

    • Related Report
      2021 Annual Research Report
  • [Remarks] 研究室HP

    • URL

      https://uoy-suzuki-laboratory.blogspot.com/

    • Related Report
      2021 Annual Research Report 2019 Research-status Report
  • [Remarks] 山梨大学研究者総覧

    • URL

      http://nerdb-re.yamanashi.ac.jp/Profiles/338/0033743/profile.html

    • Related Report
      2020 Research-status Report 2019 Research-status Report

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Published: 2019-04-18   Modified: 2023-01-30  

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