JP7186367B2 - 容量素子及びイメージセンサ - Google Patents
容量素子及びイメージセンサ Download PDFInfo
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- 239000003990 capacitor Substances 0.000 title description 17
- 229910052799 carbon Inorganic materials 0.000 claims description 55
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 54
- NRTOMJZYCJJWKI-UHFFFAOYSA-N Titanium nitride Chemical compound [Ti]#N NRTOMJZYCJJWKI-UHFFFAOYSA-N 0.000 claims description 19
- 238000006243 chemical reaction Methods 0.000 claims description 18
- 239000000758 substrate Substances 0.000 claims description 14
- 229910000449 hafnium oxide Inorganic materials 0.000 claims description 11
- WIHZLLGSGQNAGK-UHFFFAOYSA-N hafnium(4+);oxygen(2-) Chemical compound [O-2].[O-2].[Hf+4] WIHZLLGSGQNAGK-UHFFFAOYSA-N 0.000 claims description 11
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 claims description 10
- MZLGASXMSKOWSE-UHFFFAOYSA-N tantalum nitride Chemical compound [Ta]#N MZLGASXMSKOWSE-UHFFFAOYSA-N 0.000 claims description 10
- 229910001928 zirconium oxide Inorganic materials 0.000 claims description 10
- 239000010408 film Substances 0.000 description 85
- 239000010410 layer Substances 0.000 description 80
- 238000000034 method Methods 0.000 description 38
- 238000009832 plasma treatment Methods 0.000 description 22
- 230000015556 catabolic process Effects 0.000 description 18
- 238000004519 manufacturing process Methods 0.000 description 16
- 239000000463 material Substances 0.000 description 16
- 239000013078 crystal Substances 0.000 description 13
- 238000000231 atomic layer deposition Methods 0.000 description 12
- 229910052751 metal Inorganic materials 0.000 description 10
- 239000002184 metal Substances 0.000 description 10
- 150000004767 nitrides Chemical class 0.000 description 10
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 9
- 239000004020 conductor Substances 0.000 description 8
- 239000002344 surface layer Substances 0.000 description 8
- 230000007547 defect Effects 0.000 description 7
- 229910052814 silicon oxide Inorganic materials 0.000 description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- 239000012298 atmosphere Substances 0.000 description 6
- 238000005229 chemical vapour deposition Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 5
- 238000009413 insulation Methods 0.000 description 5
- 230000004048 modification Effects 0.000 description 5
- 238000012986 modification Methods 0.000 description 5
- 239000012299 nitrogen atmosphere Substances 0.000 description 5
- 239000001301 oxygen Substances 0.000 description 5
- 229910052760 oxygen Inorganic materials 0.000 description 5
- 238000000151 deposition Methods 0.000 description 4
- 239000011368 organic material Substances 0.000 description 4
- 239000004065 semiconductor Substances 0.000 description 4
- 239000010936 titanium Substances 0.000 description 4
- 238000000137 annealing Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 239000000470 constituent Substances 0.000 description 3
- 238000003384 imaging method Methods 0.000 description 3
- 229910044991 metal oxide Inorganic materials 0.000 description 3
- 150000004706 metal oxides Chemical class 0.000 description 3
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 3
- 238000005381 potential energy Methods 0.000 description 3
- 239000002243 precursor Substances 0.000 description 3
- 230000003746 surface roughness Effects 0.000 description 3
- 239000010409 thin film Substances 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 229910004298 SiO 2 Inorganic materials 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- 238000002441 X-ray diffraction Methods 0.000 description 2
- 238000004833 X-ray photoelectron spectroscopy Methods 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 239000007772 electrode material Substances 0.000 description 2
- 238000010894 electron beam technology Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 229910052735 hafnium Inorganic materials 0.000 description 2
- CJNBYAVZURUTKZ-UHFFFAOYSA-N hafnium(IV) oxide Inorganic materials O=[Hf]=O CJNBYAVZURUTKZ-UHFFFAOYSA-N 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 230000015654 memory Effects 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 238000005240 physical vapour deposition Methods 0.000 description 2
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 2
- 238000004544 sputter deposition Methods 0.000 description 2
- MNWRORMXBIWXCI-UHFFFAOYSA-N tetrakis(dimethylamido)titanium Chemical compound CN(C)[Ti](N(C)C)(N(C)C)N(C)C MNWRORMXBIWXCI-UHFFFAOYSA-N 0.000 description 2
- 238000005011 time of flight secondary ion mass spectroscopy Methods 0.000 description 2
- 238000002042 time-of-flight secondary ion mass spectrometry Methods 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 241001465754 Metazoa Species 0.000 description 1
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 1
- 229910003134 ZrOx Inorganic materials 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 229910021417 amorphous silicon Inorganic materials 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 150000001721 carbon Chemical class 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 229910052681 coesite Inorganic materials 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 229910001882 dioxygen Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- VBJZVLUMGGDVMO-UHFFFAOYSA-N hafnium atom Chemical compound [Hf] VBJZVLUMGGDVMO-UHFFFAOYSA-N 0.000 description 1
- -1 hafnium nitride Chemical class 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 229920005591 polysilicon Polymers 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- VSZWPYCFIRKVQL-UHFFFAOYSA-N selanylidenegallium;selenium Chemical compound [Se].[Se]=[Ga].[Se]=[Ga] VSZWPYCFIRKVQL-UHFFFAOYSA-N 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 229910052682 stishovite Inorganic materials 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 1
- 229910052905 tridymite Inorganic materials 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L28/00—Passive two-terminal components without a potential-jump or surface barrier for integrated circuits; Details thereof; Multistep manufacturing processes therefor
- H01L28/40—Capacitors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/14—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation
- H01L27/144—Devices controlled by radiation
- H01L27/146—Imager structures
- H01L27/14601—Structural or functional details thereof
- H01L27/14609—Pixel-elements with integrated switching, control, storage or amplification elements
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L28/00—Passive two-terminal components without a potential-jump or surface barrier for integrated circuits; Details thereof; Multistep manufacturing processes therefor
- H01L28/40—Capacitors
- H01L28/60—Electrodes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L28/00—Passive two-terminal components without a potential-jump or surface barrier for integrated circuits; Details thereof; Multistep manufacturing processes therefor
- H01L28/40—Capacitors
- H01L28/60—Electrodes
- H01L28/75—Electrodes comprising two or more layers, e.g. comprising a barrier layer and a metal layer
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Semiconductor Integrated Circuits (AREA)
- Solid State Image Pick-Up Elements (AREA)
Description
近年、半導体技術における微細加工技術の進歩により、高集積化及び高容量化が急速に進められている。高集積化に伴い、平面視において容量素子が配置される領域の面積であるキャパシタ面積は減少する。ここで、容量素子の容量を低下させることなく、小さなキャパシタ面積を実現しようとすれば、容量素子の絶縁膜を薄くする必要がある。しかしながら、絶縁膜を薄くした場合、容量素子の絶縁破壊が生じやすくなり、ソフトエラーの発生、及び、製品の信頼性が問題になってくる。
図1は、実施の形態に係る容量素子10の例示的な構造を示す断面図である。
以上、1つ又は複数の態様に係る容量素子、イメージセンサ及び容量素子の製造方法について、実施の形態に基づいて説明したが、本開示は、これらの実施の形態に限定されるものではない。本開示の主旨を逸脱しない限り、当業者が思いつく各種変形を本実施の形態に施したもの、及び、異なる実施の形態における構成要素を組み合わせて構築される形態も、本開示の範囲内に含まれる。
11、21 下部電極
11a、11b 最表面層
12、22 誘電体層
13、23 上部電極
100 イメージセンサ
110 基板
120 多層配線構造
130 光電変換素子
131 画素電極
132 光電変換膜
133 透明電極
Claims (7)
- 第1電極と、
前記第1電極に対向して配置された第2電極と、
前記第1電極と前記第2電極との間に位置し、前記第1電極及び前記第2電極の各々に接する誘電体層とを備え、
前記誘電体層の膜厚は、16nm以上であり、
前記第1電極は、炭素を含有し、
前記誘電体層と前記第1電極とが接する界面における炭素の元素比は、30at%以下である、
容量素子。 - 前記誘電体層は、ハフニウムの酸化物及びジルコニウムの酸化物からなる群から選択される少なくとも1つから構成されている、
請求項1に記載の容量素子。 - 前記第1電極は、チタンの窒化物又はタンタルの窒化物からなる群から選択される少なくとも1つから構成されている、
請求項1に記載の容量素子。 - 前記界面は、前記第2電極から前記第1電極に向かう方向に凹んだトレンチ形状を有し、
前記誘電体層は、前記トレンチ形状に沿って設けられている、
請求項1または2に記載の容量素子。 - 光電変換素子及びフォトダイオードからなる群から選択される少なくとも1つと、
容量素子と、を備え、
前記容量素子は、
第1電極と、
前記第1電極に対向して配置された第2電極と、
前記第1電極と前記第2電極との間に位置し、前記第1電極及び前記第2電極の各々に接する誘電体層とを備え、
前記誘電体層の膜厚は、16nm以上であり、
前記第1電極は、炭素を含有し、
前記誘電体層と前記第1電極とが接する界面における炭素の元素比は、30at%以下である、
イメージセンサ。 - 前記第1電極、前記誘電体層および前記第2電極は、基板側からこの順に形成される、
請求項1から4のいずれかに記載の容量素子。 - 前記第1電極、前記誘電体層および前記第2電極は、基板側からこの順に形成される、
請求項5に記載のイメージセンサ。
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JP2017175022 | 2017-09-12 | ||
JP2017175022 | 2017-09-12 |
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JP2019054238A JP2019054238A (ja) | 2019-04-04 |
JP7186367B2 true JP7186367B2 (ja) | 2022-12-09 |
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US (2) | US11114481B2 (ja) |
JP (1) | JP7186367B2 (ja) |
CN (1) | CN109494302B (ja) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
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JP7249552B2 (ja) * | 2017-11-30 | 2023-03-31 | パナソニックIpマネジメント株式会社 | 撮像装置 |
WO2021044762A1 (ja) * | 2019-09-04 | 2021-03-11 | パナソニックIpマネジメント株式会社 | 撮像装置 |
TWI782464B (zh) * | 2021-03-26 | 2022-11-01 | 力晶積成電子製造股份有限公司 | 半導體元件及其製造方法 |
US11792996B2 (en) * | 2021-04-13 | 2023-10-17 | Taiwan Semiconductor Manufacturing Company, Ltd. | Bottom-electrode interface structure for memory |
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US20210366960A1 (en) | 2021-11-25 |
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US12094893B2 (en) | 2024-09-17 |
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US20190081096A1 (en) | 2019-03-14 |
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