KR101094376B1 - 반도체장치의 매립워드라인 형성 방법 - Google Patents
반도체장치의 매립워드라인 형성 방법 Download PDFInfo
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- KR101094376B1 KR101094376B1 KR1020090070990A KR20090070990A KR101094376B1 KR 101094376 B1 KR101094376 B1 KR 101094376B1 KR 1020090070990 A KR1020090070990 A KR 1020090070990A KR 20090070990 A KR20090070990 A KR 20090070990A KR 101094376 B1 KR101094376 B1 KR 101094376B1
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- 238000000034 method Methods 0.000 title claims abstract description 73
- 239000004065 semiconductor Substances 0.000 title claims abstract description 19
- NRTOMJZYCJJWKI-UHFFFAOYSA-N Titanium nitride Chemical compound [Ti]#N NRTOMJZYCJJWKI-UHFFFAOYSA-N 0.000 claims abstract description 60
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims abstract description 45
- 229910052721 tungsten Inorganic materials 0.000 claims abstract description 45
- 239000010937 tungsten Substances 0.000 claims abstract description 45
- 238000000137 annealing Methods 0.000 claims abstract description 42
- 239000007789 gas Substances 0.000 claims abstract description 30
- 230000008021 deposition Effects 0.000 claims abstract description 21
- 238000005530 etching Methods 0.000 claims abstract description 20
- 239000000758 substrate Substances 0.000 claims abstract description 19
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 claims abstract description 10
- 230000004888 barrier function Effects 0.000 claims abstract description 6
- 230000008569 process Effects 0.000 claims description 30
- 239000011261 inert gas Substances 0.000 claims description 5
- 238000002156 mixing Methods 0.000 claims description 3
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 2
- 150000004767 nitrides Chemical class 0.000 abstract description 41
- 239000012535 impurity Substances 0.000 abstract description 18
- 239000010936 titanium Substances 0.000 abstract description 6
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 abstract 1
- 229910052719 titanium Inorganic materials 0.000 abstract 1
- 238000007789 sealing Methods 0.000 description 28
- 238000002955 isolation Methods 0.000 description 24
- 238000000151 deposition Methods 0.000 description 20
- 238000011049 filling Methods 0.000 description 14
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 13
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 13
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 13
- 229910052799 carbon Inorganic materials 0.000 description 13
- 229910052801 chlorine Inorganic materials 0.000 description 13
- 239000000460 chlorine Substances 0.000 description 13
- 229910052731 fluorine Inorganic materials 0.000 description 13
- 239000011737 fluorine Substances 0.000 description 13
- 229920003209 poly(hydridosilsesquioxane) Polymers 0.000 description 12
- 229910052751 metal Inorganic materials 0.000 description 10
- 239000002184 metal Substances 0.000 description 10
- 230000007423 decrease Effects 0.000 description 6
- 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 5
- 230000003647 oxidation Effects 0.000 description 4
- 238000007254 oxidation reaction Methods 0.000 description 4
- 229920002120 photoresistant polymer Polymers 0.000 description 4
- 238000005498 polishing Methods 0.000 description 4
- 230000002265 prevention Effects 0.000 description 4
- 238000000926 separation method Methods 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 241001455214 Acinonyx jubatus Species 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10B—ELECTRONIC MEMORY DEVICES
- H10B99/00—Subject matter not provided for in other groups of this subclass
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/70—Manufacture or treatment of devices consisting of a plurality of solid state components formed in or on a common substrate or of parts thereof; Manufacture of integrated circuit devices or of parts thereof
- H01L21/71—Manufacture of specific parts of devices defined in group H01L21/70
- H01L21/74—Making of localized buried regions, e.g. buried collector layers, internal connections substrate contacts
- H01L21/743—Making of internal connections, substrate contacts
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10B—ELECTRONIC MEMORY DEVICES
- H10B12/00—Dynamic random access memory [DRAM] devices
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10B—ELECTRONIC MEMORY DEVICES
- H10B12/00—Dynamic random access memory [DRAM] devices
- H10B12/01—Manufacture or treatment
- H10B12/02—Manufacture or treatment for one transistor one-capacitor [1T-1C] memory cells
- H10B12/05—Making the transistor
- H10B12/053—Making the transistor the transistor being at least partially in a trench in the substrate
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10B—ELECTRONIC MEMORY DEVICES
- H10B12/00—Dynamic random access memory [DRAM] devices
- H10B12/30—DRAM devices comprising one-transistor - one-capacitor [1T-1C] memory cells
- H10B12/48—Data lines or contacts therefor
- H10B12/488—Word lines
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Semiconductor Memories (AREA)
Abstract
Description
Claims (14)
- 패드막을 식각장벽으로 기판을 식각하여 트렌치를 형성하는 단계;상기 트렌치를 매립하도록 전면에 도전막을 형성하는 증착 단계;상기 패드막이 노출될때까지 상기 도전막을 평탄화하는 평탄화 단계;상기 평탄화된 도전막을 에치백하는 에치백 단계; 및상기 증착단계, 평탄화단계 또는 에치백 단계 중 적어도 어느 하나의 단계 이후에 질소함유가스 분위기에서 어닐링하는 단계를 포함하는 반도체장치의 매립워드라인 형성 방법.
- 제1항에 있어서,상기 어닐링하는 단계에서,상기 질소함유 가스는 NH3 가스를 포함하는 반도체장치의 매립워드라인 형성 방법.
- 제2항에 있어서,상기 어닐링하는 단계는,상기 NH3 가스에 비활성 가스를 혼합하여 진행하는 반도체장치의 매립워드라인 형성 방법.
- 제3항에 있어서,상기 비활성가스는 Ar, He 또는 N2를 포함하는 반도체장치의 매립워드라인 형성 방법.
- 제1항에 있어서,상기 어닐링하는 단계는,급속열처리(Rapid Thermal Process; RTP] 형태로 진행하거나, 퍼니스형태(Furnace type)로 진행하는 반도체장치의 매립워드라인 형성 방법.
- 제1항에 있어서,상기 어닐링하는 단계는,어닐온도는 300∼1100℃의 범위로 하고, 공정 압력은 0.001∼1000torr의 범위에서 진행하며, 어닐 시간은 1∼10000초의 범위로 하는 반도체장치의 매립워드라 인 형성 방법.
- 제1항에 있어서,상기 도전막은 티타늄질화막을 단독으로 형성하거나 또는 티타늄질화막과 텅스텐막을 적층하여 형성하는 반도체장치의 매립워드라인 형성 방법.
- 패드막을 식각장벽으로 기판을 식각하여 트렌치를 형성하는 단계;상기 트렌치를 매립하도록 전면에 도전막을 형성하는 증착 단계;상기 패드막이 노출될때까지 상기 도전막을 평탄화하는 평탄화 단계;상기 평탄화된 도전막을 에치백하는 에치백 단계; 및상기 증착단계 이후, 평탄화단계 이후 및 에치백 단계 이후에 각각 질소함유가스 분위기에서 어닐링하는 단계를 포함하는 반도체장치의 매립워드라인 형성 방법.
- 제8항에 있어서,상기 어닐링하는 단계에서,상기 질소함유 가스는 NH3 가스를 포함하는 반도체장치의 매립워드라인 형성 방법.
- 제9항에 있어서,상기 어닐링하는 단계는,상기 NH3 가스에 비활성 가스를 혼합하여 진행하는 반도체장치의 매립워드라인 형성 방법.
- 제10항에 있어서,상기 비활성가스는 Ar, He 또는 N2를 포함하는 반도체장치의 매립워드라인 형성 방법.
- 제8항에 있어서,상기 어닐링하는 단계는,급속열처리(RTP) 형태로 진행하거나, 퍼니스형태(Furnace type)로 진행하는 반도체장치의 매립워드라인 형성 방법.
- 제8항에 있어서,상기 어닐링하는 단계는,어닐온도는 300∼1100℃의 범위로 하고, 공정 압력은 0.001∼1000torr의 범위에서 진행하며, 어닐 시간은 1∼10000초의 범위로 하는 반도체장치의 매립워드라인 형성 방법.
- 제8항에 있어서,상기 도전막은 티타늄질화막을 단독으로 형성하거나 또는 티타늄질화막과 텅스텐막을 적층하여 형성하는 반도체장치의 매립워드라인 형성 방법.
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KR1020090070990A KR101094376B1 (ko) | 2009-07-31 | 2009-07-31 | 반도체장치의 매립워드라인 형성 방법 |
US12/646,478 US8309448B2 (en) | 2009-07-31 | 2009-12-23 | Method for forming buried word line in semiconductor device |
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KR1020090070990A KR101094376B1 (ko) | 2009-07-31 | 2009-07-31 | 반도체장치의 매립워드라인 형성 방법 |
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Families Citing this family (22)
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KR101094373B1 (ko) * | 2009-07-03 | 2011-12-15 | 주식회사 하이닉스반도체 | 랜딩플러그 전치 구조를 이용한 매립게이트 제조 방법 |
KR101749055B1 (ko) * | 2010-10-06 | 2017-06-20 | 삼성전자주식회사 | 반도체 장치 및 반도체 장치의 형성 방법 |
US8609457B2 (en) | 2011-05-03 | 2013-12-17 | Globalfoundries Inc. | Semiconductor device with DRAM bit lines made from same material as gate electrodes in non-memory regions of the device, and methods of making same |
US20130140682A1 (en) * | 2011-12-01 | 2013-06-06 | Chi-Wen Huang | Buried word line and method for forming buried word line in semiconductor device |
US20150087144A1 (en) * | 2013-09-26 | 2015-03-26 | Taiwan Semiconductor Manufacturing Company Ltd. | Apparatus and method of manufacturing metal gate semiconductor device |
CN105668540B (zh) * | 2014-11-19 | 2017-11-14 | 清华大学 | 一种纳米线阵列的制备方法 |
KR102268073B1 (ko) | 2014-11-24 | 2021-06-22 | 삼성전자주식회사 | 매립 게이트를 포함하는 메모리 소자 및 그 제조방법 |
CN108695235B (zh) * | 2017-04-05 | 2019-08-13 | 联华电子股份有限公司 | 改善钨金属层蚀刻微负载的方法 |
CN109559984B (zh) * | 2017-08-21 | 2020-11-13 | 中芯国际集成电路制造(上海)有限公司 | 半导体装置的制造方法 |
US10249629B1 (en) * | 2018-01-22 | 2019-04-02 | United Microelectronics Corp. | Method for forming buried word lines |
CN110890367B (zh) * | 2018-09-07 | 2024-12-10 | 长鑫存储技术有限公司 | 存储器及其形成方法 |
US11322502B2 (en) | 2019-07-08 | 2022-05-03 | Micron Technology, Inc. | Apparatus including barrier materials within access line structures, and related methods and electronic systems |
CN113539971B (zh) * | 2020-04-10 | 2022-12-02 | 长鑫存储技术有限公司 | 半导体结构及其形成方法 |
EP3955296B1 (en) * | 2020-05-18 | 2024-10-09 | Changxin Memory Technologies, Inc. | Semiconductor structure and method for forming same |
US12327763B2 (en) | 2020-10-01 | 2025-06-10 | Applied Materials, Inc. | Treatment methods for titanium nitride films |
US11882693B2 (en) | 2020-09-07 | 2024-01-23 | Changxin Memory Technologies, Inc. | Method for manufacturing semiconductor device |
CN114156235B (zh) * | 2020-09-07 | 2024-10-29 | 长鑫存储技术有限公司 | 存储器的制造方法 |
CN114156234B (zh) * | 2020-09-07 | 2024-09-17 | 长鑫存储技术有限公司 | 半导体器件的制备方法 |
US12114488B2 (en) | 2021-05-05 | 2024-10-08 | Applied Materials, Inc. | Enhancing gapfill performance of dram word line |
US12262529B2 (en) | 2021-08-16 | 2025-03-25 | Changxin Memory Technologies, Inc. | Semiconductor device, manufacturing method of semiconductor device, and semiconductor memory device |
CN115942740A (zh) * | 2021-08-16 | 2023-04-07 | 长鑫存储技术有限公司 | 半导体器件、其制备方法及半导体存储装置 |
US12322602B2 (en) | 2021-09-13 | 2025-06-03 | Applied Materials, Inc. | Recessed metal etching methods |
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KR100300150B1 (ko) * | 1997-10-21 | 2001-09-06 | 포만 제프리 엘 | 반도체디바이스제조방법 |
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US20110027988A1 (en) | 2011-02-03 |
US8309448B2 (en) | 2012-11-13 |
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