JP6123019B2 - 窒化アルミニウム圧電薄膜、圧電材、圧電部品及び窒化アルミニウム圧電薄膜の製造方法 - Google Patents
窒化アルミニウム圧電薄膜、圧電材、圧電部品及び窒化アルミニウム圧電薄膜の製造方法 Download PDFInfo
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- 239000010409 thin film Substances 0.000 title claims description 106
- PMHQVHHXPFUNSP-UHFFFAOYSA-M copper(1+);methylsulfanylmethane;bromide Chemical compound Br[Cu].CSC PMHQVHHXPFUNSP-UHFFFAOYSA-M 0.000 title claims description 76
- 238000004519 manufacturing process Methods 0.000 title claims description 23
- 239000000463 material Substances 0.000 title claims description 21
- 230000010287 polarization Effects 0.000 claims description 34
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 20
- 239000000758 substrate Substances 0.000 claims description 17
- 229910052732 germanium Inorganic materials 0.000 claims description 16
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 claims description 13
- 229910052757 nitrogen Inorganic materials 0.000 claims description 13
- 238000004544 sputter deposition Methods 0.000 claims description 11
- 229910052782 aluminium Inorganic materials 0.000 claims description 9
- 239000000956 alloy Substances 0.000 claims description 7
- 229910045601 alloy Inorganic materials 0.000 claims description 7
- 239000010408 film Substances 0.000 claims description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 6
- 238000000151 deposition Methods 0.000 claims description 2
- 229910001873 dinitrogen Inorganic materials 0.000 claims description 2
- 239000007789 gas Substances 0.000 description 8
- 238000000034 method Methods 0.000 description 8
- 238000010438 heat treatment Methods 0.000 description 7
- 150000002500 ions Chemical class 0.000 description 7
- 238000005001 rutherford backscattering spectroscopy Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- 239000000203 mixture Substances 0.000 description 4
- 238000004458 analytical method Methods 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 229910052706 scandium Inorganic materials 0.000 description 3
- SIXSYDAISGFNSX-UHFFFAOYSA-N scandium atom Chemical compound [Sc] SIXSYDAISGFNSX-UHFFFAOYSA-N 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000008188 pellet Substances 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- GYHNNYVSQQEPJS-UHFFFAOYSA-N Gallium Chemical compound [Ga] GYHNNYVSQQEPJS-UHFFFAOYSA-N 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 229910052733 gallium Inorganic materials 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 229910052741 iridium Inorganic materials 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 238000005546 reactive sputtering Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 229910052703 rhodium Inorganic materials 0.000 description 1
- 229910052707 ruthenium Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
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Description
Ar:N2の流量比=7:3
ガス圧=0.18Pa
目標組成:Ge0.1Al0.9N
2…基材
3…Ge含有窒化アルミニウム圧電薄膜
4…電極
12…基材
21…製造装置
22…チャンバー
24…加熱装置
25,26…高周波電力源
27…Alターゲット
28…Geターゲット
29…バルブ
31〜33…シャッター
41…製造装置
42…GeAl合金ターゲット
43…チャンバー
44…高周波電力源
45,46…加熱装置
47…シャッター
48…バルブ
51…圧電薄膜フィルタ
52…基板
52a…空洞部
53…支持膜
54,55…第1,第2の圧電薄膜
56…下部電極
57…上部電極
58…電極
61…音響素子
62…ケース
62a…放音孔
63…ベースプレート
64,65…支持部
70…積層圧電素子
71…電極
72,77…振動膜
73,76…圧電層
74,75,78…電極
103…窒化アルミニウム圧電薄膜
Claims (8)
- ゲルマニウムを含有し、分極方向が窒素極性であり、かつ前記分極方向が薄膜成長方向と逆方向であることを特徴とする窒化アルミニウム圧電薄膜。
- 前記ゲルマニウムと、アルミニウムの濃度の合計を100原子%としたとき、ゲルマニウムの濃度が3〜28原子%の範囲にある、請求項1に記載の窒化アルミニウム圧電薄膜。
- 前記ゲルマニウムの濃度が、4〜21原子%の範囲にある、請求項2に記載の窒化アルミニウム圧電薄膜。
- 前記ゲルマニウムの濃度が、5〜16原子%の範囲にある、請求項3に記載の窒化アルミニウム圧電薄膜。
- 基材と、前記基材上に堆積法により形成された窒化アルミニウム圧電薄膜とを備え、該窒化アルミニウム圧電薄膜が、請求項1〜4のいずれか1項に記載の窒化アルミニウム圧電薄膜である、圧電材。
- 請求項1〜4のいずれか1項に記載の窒化アルミニウム圧電薄膜を備える圧電部品。
- 請求項1〜4のいずれか1項に記載の窒化アルミニウム圧電薄膜の製造方法であって、基材上において、スパッタリングにより前記窒化アルミニウム圧電薄膜を成長させる、窒化アルミニウム圧電薄膜の製造方法。
- Alからなるターゲット及びGeからなるターゲット、またはAlGe合金ターゲットを用い、窒素ガスを供給しつつスパッタリングする、請求項7に記載の窒化アルミニウム圧電薄膜の製造方法。
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US20170288121A1 (en) * | 2016-03-31 | 2017-10-05 | Avago Technologies General Ip (Singapore) Pte. Ltd | Acoustic resonator including composite polarity piezoelectric layer having opposite polarities |
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