JP5071981B2 - 半導体メモリ - Google Patents
半導体メモリ Download PDFInfo
- Publication number
- JP5071981B2 JP5071981B2 JP2008054258A JP2008054258A JP5071981B2 JP 5071981 B2 JP5071981 B2 JP 5071981B2 JP 2008054258 A JP2008054258 A JP 2008054258A JP 2008054258 A JP2008054258 A JP 2008054258A JP 5071981 B2 JP5071981 B2 JP 5071981B2
- Authority
- JP
- Japan
- Prior art keywords
- charge storage
- storage layer
- layer
- atoms
- semiconductor memory
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- 239000004065 semiconductor Substances 0.000 title claims description 41
- 238000003860 storage Methods 0.000 claims description 70
- 125000004429 atom Chemical group 0.000 claims description 43
- 230000004888 barrier function Effects 0.000 claims description 43
- 239000000758 substrate Substances 0.000 claims description 12
- 229910052782 aluminium Inorganic materials 0.000 claims description 8
- 125000004437 phosphorous atom Chemical group 0.000 claims description 7
- 229910052710 silicon Inorganic materials 0.000 claims description 6
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 19
- 238000010586 diagram Methods 0.000 description 14
- 229910052751 metal Inorganic materials 0.000 description 13
- 239000002184 metal Substances 0.000 description 13
- 229910004298 SiO 2 Inorganic materials 0.000 description 10
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 8
- 229910052760 oxygen Inorganic materials 0.000 description 8
- 239000001301 oxygen Substances 0.000 description 8
- 229910052814 silicon oxide Inorganic materials 0.000 description 7
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 5
- 230000014759 maintenance of location Effects 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000010703 silicon Substances 0.000 description 4
- 238000004544 sputter deposition Methods 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 229910052691 Erbium Inorganic materials 0.000 description 2
- 229910052581 Si3N4 Inorganic materials 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 239000013307 optical fiber Substances 0.000 description 2
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 2
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 2
- 229920005591 polysilicon Polymers 0.000 description 2
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 2
- 229910052779 Neodymium Inorganic materials 0.000 description 1
- 229910004541 SiN Inorganic materials 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 229910052681 coesite Inorganic materials 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- UYAHIZSMUZPPFV-UHFFFAOYSA-N erbium Chemical compound [Er] UYAHIZSMUZPPFV-UHFFFAOYSA-N 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 229910052735 hafnium Inorganic materials 0.000 description 1
- VBJZVLUMGGDVMO-UHFFFAOYSA-N hafnium atom Chemical compound [Hf] VBJZVLUMGGDVMO-UHFFFAOYSA-N 0.000 description 1
- 229910000449 hafnium oxide Inorganic materials 0.000 description 1
- WIHZLLGSGQNAGK-UHFFFAOYSA-N hafnium(4+);oxygen(2-) Chemical compound [O-2].[O-2].[Hf+4] WIHZLLGSGQNAGK-UHFFFAOYSA-N 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000006386 memory function Effects 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 229910052682 stishovite Inorganic materials 0.000 description 1
- 229910052905 tridymite Inorganic materials 0.000 description 1
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- Semiconductor Memories (AREA)
- Non-Volatile Memory (AREA)
Description
11:基板、12:トンネル障壁層、13:絶縁層、14:ブロック障壁層、15:浮遊ゲート層、16:ゲート電極
21:基板、22:第1の障壁層、23:電荷蓄積層、24:第2の障壁層、25:ゲート電極
31:基板、32:ウエル、33:ソース、34:ドレイン、35:第1の障壁層、36:電荷蓄積層、37:第2の障壁層、38:ゲート電極
41:基板、42:第1の障壁層、43:電荷蓄積層、44:第2の障壁層、45:ゲート電極
Claims (1)
- 半導体基板に対して、第1の障壁層、電荷蓄積層、第2の障壁層、およびゲート電極が順次積層された構造を有し、前記第1および第2の障壁層はA1 2 O 3 からなり、前記電荷蓄積層はAl原子を過剰に含有するA1 2 O 3 からなり、前記電荷蓄積層が該Al原子を過剰に含有することで前記電荷蓄積層に局在準位を生成し該局在準位に電子を蓄積させるようにした半導体メモリであって、
前記電荷蓄積層は、P原子、Si原子又はGe原子がドーピングされていることを特徴とする半導体メモリ。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2008054258A JP5071981B2 (ja) | 2008-03-05 | 2008-03-05 | 半導体メモリ |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2008054258A JP5071981B2 (ja) | 2008-03-05 | 2008-03-05 | 半導体メモリ |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2009212321A JP2009212321A (ja) | 2009-09-17 |
JP5071981B2 true JP5071981B2 (ja) | 2012-11-14 |
Family
ID=41185179
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2008054258A Expired - Fee Related JP5071981B2 (ja) | 2008-03-05 | 2008-03-05 | 半導体メモリ |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP5071981B2 (ja) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20120054660A (ko) * | 2009-11-04 | 2012-05-30 | 가부시끼가이샤 도시바 | 불휘발성 반도체 기억 장치 |
JP2017168708A (ja) | 2016-03-17 | 2017-09-21 | 東芝メモリ株式会社 | 半導体記憶装置 |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4492930B2 (ja) * | 2004-02-10 | 2010-06-30 | 日本電信電話株式会社 | 電荷蓄積型メモリ及びその製造方法 |
KR20080010623A (ko) * | 2006-07-27 | 2008-01-31 | 삼성전자주식회사 | 비휘발성 반도체 메모리 소자 및 그 제조방법 |
JP4282702B2 (ja) * | 2006-09-22 | 2009-06-24 | 株式会社東芝 | 不揮発性半導体記憶装置 |
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2008
- 2008-03-05 JP JP2008054258A patent/JP5071981B2/ja not_active Expired - Fee Related
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Publication number | Publication date |
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JP2009212321A (ja) | 2009-09-17 |
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