1.中国计量大学计量测试与仪器学院,浙江杭州 310018
2.北京大学电子学院纳米器件物理与化学教育部重点实验室碳基电子学研究中心,北京 100871
[ "谢雨农 女,1994年10月出生于浙江省温岭市.博士,就职于中国计量大学.主要研究方向为新型半导体材料单片三维集成技术.E-mail: rowenia@163.com" ]
[ "张志勇 男,1977年9月出生于湖北省应城市.博士,北京大学博雅特聘教授,博士生导师,纳米器件物理与化学教育部重点实验室主任,碳基电子学研究中心副主任.主要研究方向为碳基纳米电子学.E-mail: zyzhang@pku.edu.cn" ]
收稿:2025-09-05,
录用:2025-12-11,
纸质出版:2025-12-25
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谢雨农, 张志勇. 氧化物半导体薄膜晶体管的栅工程:材料、结构、界面与性能调控[J]. 电子学报, 2025, 53(12): 4541-4559.
XIE Yu-nong, ZHANG Zhi-yong. Gate Engineering of Oxide Semiconductor Thin-Film Transistors: Materials, Structures, Interfaces, and Performance Modulation[J]. Acta Electronica Sinica, 2025, 53(12): 4541-4559.
谢雨农, 张志勇. 氧化物半导体薄膜晶体管的栅工程:材料、结构、界面与性能调控[J]. 电子学报, 2025, 53(12): 4541-4559. DOI:10.12263/DZXB.20250771
XIE Yu-nong, ZHANG Zhi-yong. Gate Engineering of Oxide Semiconductor Thin-Film Transistors: Materials, Structures, Interfaces, and Performance Modulation[J]. Acta Electronica Sinica, 2025, 53(12): 4541-4559. DOI:10.12263/DZXB.20250771
氧化物半导体(Oxide Semiconductor,OS),特别是非晶氧化物半导体(Amorphous Oxide Semicondutor,AOS),因其适中的迁移率、极低的关态电流、优异的大面积均匀性以及与传统互补金属氧化物半导体(Complementary Metal Oxide Semiconductor,CMOS)工艺兼容的低温制备工艺,已成为突破硅基器件尺寸微缩物理极限的重要候选材料.近年来,AOS不仅在高端液晶显示(Liquid Crystal Display,LCD)与有机发光二极管(Organic Light-Emitting Diode,OLED)显示背板中实现了规模化应用,还在低功耗逻辑器件、高密度存储以及单片三维集成电路(Monolithic Three-Dimensional,M3D)等先进集成架构中展现出广阔的应用前景.尤其在M3D技术所要求的低热预算(
<
400 ℃)制造条件下,氧化物半导体在功耗、性能、面积与成本(Power-Performance-Area-Cost,PPAC)综合优化方面具备显著优势.在器件尺寸持续微缩的背景下,如何维持对沟道载流子的有效静电控制、抑制短沟道效应并保障器件长期可靠性,已成为制约氧化物半导体薄膜晶体管(Thin Film Transistors,TFTs)进一步发展的核心问题.其中,栅工程作为决定晶体管电学性能的关键环节,直接影响器件的阈值电压、亚阈值摆幅、漏电流以及偏置稳定性等重要指标.本文围绕氧化物半导体TFT的栅工程展开系统综述,重点从栅介质材料、栅结构设计以及栅-沟道界面工程三个方面总结近年来的研究进展与技术趋势.在栅介质层面,通过引入高介电常数(high-
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1.60866666
2.28600001
)材料及其复合结构,可在降低等效氧化层厚度的同时增强栅控能力、降低工作电压并有效抑制栅漏电流;在栅结构层面,采用鳍式晶体管、纳米线及全环绕栅(Gate-All-Aroud,GAA)等三维非平面结构,能够显著增强栅极对沟道的包裹性,从而缓解短沟道效应并提升器件在极限尺寸下的性能;在界面工程方面,通过界面钝化、能带调控及缺陷态调节等策略,可有效降低界面态密度,改善载流子输运特性,并显著提升器件的稳定性与可靠性.尽管氧化物半导体栅工程已取得显著进展,但仍面临若干关键挑战,包括器件可靠性机制的复杂性、现有界面优化策略在短沟道器件中的适用性,以及缺乏与n型氧化物半导体性能匹配且兼容后端工艺(Back End Of Line,BEOL)的高性能p型氧化物半导体材料.这些问题在一定程度上限制了互补电路及高密度集成应用的发展.总体而言,氧化物半导体作为后摩尔时代的重要技术路线,其发展潜力已得到学术界与产业界的广泛认可.随着栅工程相关材料、结构与界面调控技术的持续突破,氧化物半导体有望在未来高性能、低功耗电子器件与三维集成系统中发挥更加关键的作用.
Oxide semiconductors (OS)
particularly amorphous oxide semiconductors (AOS)
have emerged as important candidates for overcoming the physical scaling limits of si
licon-based devices
owing to their moderate carrier mobility
extremely low off-state current
excellent large-area uniformity
and low-temperature fabrication processes compatible with conventional complementary metal-oxide-semiconductor (CMOS) technology. In recent years
AOS have not only achieved large-scale commercial applications in high-end liquid crystal display (LCD) and organic light-emitting diode (OLED) display backplanes
but have also demonstrated great potential in low-power logic devices
high-density memory
and advanced integration architectures such as monolithic three-dimensional integrated circuits (M3D). In particular
under the stringent low thermal budget (
<
400 °C) required for M3D fabrication
oxide semiconductors exhibit significant advantages in the comprehensive optimization of power
performance
area
and cost (PPAC).As device dimensions continue to scale down
maintaining effective electrostatic control over channel carriers
suppressing short-channel effects
and ensuring long-term device reliability have become critical challenges limiting the further development of oxide semiconductor thin-film transistors (TFTs). Among various design strategies
gate engineering plays a pivotal role in determining transistor electrical characteristics
directly affecting key performance metrics such as threshold voltage
subthreshold swing
leakage current
and bias stability. This paper presents a systematic review of gate engineering in oxide semiconductor TFTs
with a focus on recent advances and technological trends in gate dielectric materials
gate structure design
and gate-channel interface engineering. At the gate dielectric level
the introduction of high-permittivity (high-
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1.60866666
2.28600001
) materials and their composite structures enables enhanced gate controllability
reduced operating voltage
and effective suppression of gate leakage current by scaling down the equivalent oxide thickness. At the gate structure level
three-dimensional non-planar architectures—including FinFETs
nanowire transistors
and gate-all-around (GAA) structures—significantly improve gate-to-channel coupling
thereby alleviating short-channel effects and enhancing device performance at aggressive scaling limits. At the interface engineering level
strategies such as interface passivation
band alignment optimization
and defect state modulation effectively reduce interface trap density
improve carrier transport properties
and markedly enhance device stability and reliability.Despite the substantial progress achieved in gate engineering of oxide semiconductor devices
several critical challenges remain
including the complexity of reliability degradation mechanisms
the applicability of existing interface optimization strategies to short-channel devices
and the lack of high-performance p-type oxide semiconductor materials that are both compatible with back-end-of-line (BEOL) processes and performance-matched to n-type oxide semiconductors. These limitations hinder the development of complementary circuits and high-density integrated systems. Overall
oxide semiconductors are widely recognized as a key technological pathway in the post-Moore era
and with continued breakthroughs in gate-related materials
device structures
and interface control technologies
they are expected to play an increasingly important role in future high-performance
low-power electronic devices and three-dimensional integrated systems.
DATTA S , DUTTA S , GRISAFE B , et al . Back-end-of-line compatible transistors for monolithic 3-D integration [J ] . IEEE Micro , 2019 , 39 ( 6 ): 8 - 15 .
BOESEN G F , JACOBS J E . ZnO field-effect transistor [J ] . Proceedings of the IEEE , 1968 , 56 ( 11 ): 2094 - 2095 .
KLASENS H A , KOELMANS H . A tin oxide field-effect transistor [J ] . Solid-State Electronics , 1964 , 7 ( 9 ): 701 - 702 .
HOSONO H , YASUKAWA M , KAWAZOE H . Novel oxide amorphous semiconductors: Transparent conducting amorphous oxides [J ] . Journal of Non-Crystalline Solids , 1996 , 203 : 334 - 344 .
NOMURA K , OHTA H , TAKAGI A , et al . Room-temperature fabrication of transparent flexible thin-film transistors using amorphous oxide semiconductors [J ] . Nature , 2004 , 432 ( 7016 ): 488 - 492 .
HOSONO H . How we made the IGZO transistor [J ] . Nature Electronics , 2018 , 1 ( 7 ): 428 .
KAMIYA T , HOSONO H . Material characteristics and applications of transparent amorphous oxide semiconductors [J ] . NPG Asia Materials , 2010 , 2 ( 1 ): 15 - 22 .
HOSONO H . Ionic amorphous oxide semiconductors: Material design, carrier transport, and device application [J ] . Journal of Non-Crystalline Solids , 2006 , 352 ( 9-20 ): 851 - 858 .
WU Y C , JHAN Y R . 3D TCAD Simulation for CMOS Nanoeletronic Devices [M ] . Singapore : Springer Singapore , 2018 .
XU L Q , XU L Q , LAN J , et al . Sub-5 nm ultrathin In 2 O 3 transistors for high-performance and low-power electronic applications [J ] . ACS Applied Materials & Interfaces , 2024 : acsami. 4 c 01353 .
SI M W , HU Y Q , LIN Z H , et al . Why In 2 O 3 can make 0.7 nm atomic layer thin transistors [J ] . Nano Letters , 2021 , 21 ( 1 ): 500 - 506 .
SHEN Y X , ZHANG M , HE S Y , et al . Reliability issues of amorphous oxide semiconductor-based thin film transistors [J ] . Journal of Materials Chemistry C , 2024 , 12 ( 35 ): 13707 - 13726 .
MOHAMMADIAN N , KUMAR D , FUGIKAWA-SANTOS L , et al . Bias and temperature stress effects in IGZO TFTs and the application of step-stress testing to increase reliability test throughput [J ] . IEEE Transactions on Electron Devices , 2024 , 71 ( 11 ): 6756 - 6763 .
SI M W , LIN Z H , CHEN Z Z , et al . Scaled indium oxide transistors fabricated using atomic layer deposition [J ] . Nature Electronics , 2022 , 5 ( 3 ): 164 - 170 .
NOMURA K , KAMIYA T , KIKUCHI Y , et al . Comprehensive studies on the stabilities of a-In-Ga-Zn-O based thin film transistor by constant current stress [J ] . Thin Solid Films , 2010 , 518 ( 11 ): 3012 - 3016 .
LEE J M , CHO I T , LEE J H , et al . Bias-stress-induced stretched-exponential time dependence of threshold voltage shift in InGaZnO thin film transistors [J ] . Applied Physics Letters , 2008 , 93 ( 9 ): 093504 .
MA P F , SUN J M , LIANG G D , et al . Half-volt operation of IGZO thin-film transistors enabled by ultrathin HfO 2 gate dielectric [J ] . Applied Physics Letters , 2018 , 113 ( 6 ): 063501 .
SHAO Y , XIAO X , HE X , et al . Low-voltage a-InGaZnO thin-film transistors with anodized thin HfO 2 gate dielectric [J ] . IEEE Electron Device Letters , 2015 , 36 ( 6 ): 573 - 575 .
YU M C , RUAN D B , LIU P T , et al . High performance transparent a-IGZO thin film transistors with ALD-HfO 2 gate insulator on colorless polyimide aubstrate [J ] . IEEE Transactions on Nanotechnology , 2020 , 19 : 481 - 485 .
ZHU L , HE G , LV J G , et al . Fully solution-induced high performance indium oxide thin film transistors with ZrO x high- k gate dielectrics [J ] . RSC Advances , 2018 , 8 ( 30 ): 16788 - 16799 .
ZHU C D , LIU A , LIU G X , et al . Low-temperature, nontoxic water-induced high- k zirconium oxide dielectrics for low-voltage, high-performance oxide thin-film transistors [J ] . Journal of Materials Chemistry C , 2016 , 4 ( 45 ): 10715 - 10721 .
YU M J , LIN R P , CHANG Y H , et al . High-voltage amorphous InGaZnO TFT with Al 2 O 3 high- k dielectric for low-temperature monolithic 3-D integration [J ] . IEEE Transactions on Electron Devices , 2016 , 63 ( 10 ): 3944 - 3949 .
SCHEIDELER W , MCPHAIL M , KUMAR R , et al . Scalable, high-performance printed InO x transistors enabled by ultraviolet-annealed printed high- k AlO x gate dielectrics [J ] . ACS Applied Materials & Interfaces , 2018 , 10 ( 43 ): 37277 - 37286 .
MA P F , DU L L , WANG Y M , et al . Song.Low voltage operation of IGZO thin film transistors enabled by ultrathin Al2O3 gate dielectric [J ] . Applied Physics Letters , 2018 , 112 ( 2 ): 023501 .
SHIM J H , CHOI H J , KIM Y , et al . Process-property relationship in high-k ALD SrTiO 3 and BaTiO 3 : A review [J ] . Journal of Materials Chemistry C , 2017 , 5 ( 32 ): 8000 - 8013 .
KIM Y , LEE K H , MUN G , et al . Outstanding performance as Cu top gate IGZO TFT with large trans-conductance coefficient by adopting double-layered Al 2 O 3 /SiN x gate insulator [J ] . Physica Status Solidi (a) , 2017 , 214 ( 12 ): 1700183 .
MA P F , SUN J M , ZHANG G Q , et al . Low-temperature fabrication of HfAlO alloy dielectric using atomic-layer deposition and its application in a low-power device [J ] . Journal of Alloys and Compounds , 2019 , 792 : 543 - 549 .
HUANG T , ZHANG Y , LIU H , et al . Interface scattering dominated carrier transport in hysteresis-free amorphous InGaZnO thin film transistors with high- k HfAlO gate dielectrics by atom layer deposition [J ] . Semiconductor Science and Technology , 2022 , 37 ( 2 ): 025005 .
LI Y L , CHANG-LIAO K S , LI C C , et al . Electrical and reliability characteristics of FinFETs with high- k gate stack and plasma treatments [J ] . IEEE Transactions on Electron Devices , 2021 , 68 ( 1 ): 4 - 9 .
LIU Y , DUAN X D , SHIN H J , et al . Promises and prospects of two-dimensional transistors [J ] . Nature , 2021 , 591 ( 7848 ): 43 - 53 .
SALAHUDDIN S , NI K , DATTA S . The era of hyper-scaling in electronics [J ] . Nature Electronics , 2018 , 1 ( 8 ): 442 - 450 .
SAMANTA S , HAN K Z , SUN C , et al . Amorphous InGaZnO thin-film transistors with sub-10-nm channel thickness and ultrascaled channel length [J ] . IEEE Transactions on Electron Devices , 2021 , 68 ( 3 ): 1050 - 1056 .
JI K H , KIM J I , MO Y G , et al . Comparative study on light-induced bias stress instability of IGZO transistors with SiN x and SiO 2 gate dielectrics [J ] . IEEE Electron Device Letters , 2010 , 31 ( 12 ): 1404 - 1406 .
LEE J , PARK J S , PYO Y S , et al . The influence of the gate dielectrics on threshold voltage instability in amorphous indium-gallium-zinc oxide thin film transistors [J ] . Applied Physics Letters , 2009 , 95 ( 12 ): 123502 .
LEE J S , CHANG S , KOO S M , et al . High-performance a-IGZO TFT with Z r O 2 gate dielectric fabricated at room temperature [J ] . IEEE Electron Device Letters , 2010 , 31 ( 3 ): 225 - 227 .
CHO Y J , SHIN J H , BOBADE S M , et al . Evaluation of Y 2 O 3 gate insulators for a-IGZO thin film transistors [J ] . Thin Solid Films , 2009 , 517 ( 14 ): 4115 - 4118 .
KIM J B , FUENTES-HERNANDEZ C , Jr POTSCAVAGE W J , et al . Low-voltage InGaZnO thin-film transistors with Al 2 O 3 gate insulator grown by atomic layer deposition [J ] . Applied Physics Letters , 2009 , 94 ( 14 ): 142107 .
ILLIBERI A , COBB B , SHARMA A , et al . Spatial atmospheric atomic layer deposition of In x GayZn z O for thin film transistors [J ] . ACS Applied Materials & Interfaces , 2015 , 7 ( 6 ): 3671 - 3675 .
CHIU C J , CHANG S P , CHANG S J . High-performance amorphous indium-gallium-zinc oxide thin-film transistors with polymer gate dielectric [J ] . Thin Solid Films , 2012 , 520 ( 16 ): 5455 - 5458 .
MISTRY K , CHAU R , CHOI C H , et al . A 45nm logic technology with high- k +Metal gate transistors, strained silicon, 9 Cu interconnect layers, 193nm dry patterning, and 100% Pb-free packaging [C ] // 2007 IEEE International Electron Devices Meeting . Piscataway : IEEE , 2008 : 247 - 250 .
AUTH C , ALLEN C , BLATTNER A , et al . A 22nm high performance and low-power CMOS technology featuring fully-depleted tri-gate transistors, self-aligned contacts and high density MIM capacitors [C ] // 2012 Symposium on VLSI Technology . Piscataway : IEEE , 2012 : 131 - 132 .
JAMES D . Intel Ivy Bridge unveiled: The first commercial tri-gate, high- k , metal-gate CPU [C ] // Proceedings of the IEEE 2012 Custom Integrated Circuits Conference . Piscataway : IEEE , 2012 : 1 - 4 .
LIU J C , MUKHOPADHYAY S , KUNDU A , et al . A reliability enhanced 5nm CMOS technology featuring 5 th generation FinFET with fully-developed EUV and high mobility channel for mobile SoC and high performance computing application [C ] // 2020 IEEE International Electron Devices Meeting . Piscataway : IEEE , 2020 : 9372009 .
RAZAVIEH A , ZEITZOFF P , NOWAK E J . Challenges and limitations of CMOS scaling for FinFET and beyond architectures [J ] . IEEE Transactions on Nanotechnology , 2019 , 18 : 999 - 1004 .
ZHANG Q Z , ZHANG Y K , LUO Y N , et al . New structure transistors for advanced technology node CMOS ICs [J ] . National Science Review , 2024 , 11 ( 3 ): nwae008 .
BAE G , BAE D I , KANG M , et al . 3nm GAA technology featuring multi-bridge-channel FET for low power and high performance applications [C ] // 2018 IEEE International Electron Devices Meeting . Piscataway : IEEE , 2019 : 8614629 .
KUNITAKE H , ARASAWA R , SEKI T , et al . A: Axis-aligned crystalline In-Ga-Zn oxide FET with a gate length of 21 nm suitable for memory applications [J ] . IEEE Journal of the Electron Devices Society , 2019 , 7 : 495 - 502 .
SI M W , LIN Z H , CHEN Z Z , et al . High-performance atomic-layer-deposited indium oxide 3-D transistors and integrated circuits for monolithic 3-D integration [J ] . IEEE Transactions on Electron Devices , 2021 , 68 ( 12 ): 6605 - 6609 .
HAN K Z , KONG Q W , KANG Y Y , et al . Indium-gallium-zinc-oxide (IGZO) nanowire transistors [J ] . IEEE Transactions on Electron Devices , 2021 , 68 ( 12 ): 6610 - 6616 .
FUJIWARA H , SATO Y , SAITO N , et al . Surrounding gate vertical-channel FET with a gate length of 40 nm using BEOL-compatible high-thermal-tolerance In-Al-Zn oxide channel [J ] . IEEE Transactions on Electron Devices , 2020 , 67 ( 12 ): 5329 - 5335 .
LI Q J , ZHAO W J , HU Q L , et al . First demonstration of sequential integration for stacked gate-all-around a-IGZO nanosheet transistors with record id = 2.05 mA/µm, gm = 1.13 mS/µm and Ultralow SS = 66 mV/dec [C ] // 2023 International Electron Devices Meeting . Piscataway : IEEE , 2024 : 1 - 4 .
CHEN Y X , LI F J , WANG Y L , et al . Effect of electrical performance and reliability by adjustment of the sequence and concentration of HfAlO x on IWO thin-film transistors [J ] . IEEE Transactions on Nanotechnology , 2024 , 23 : 422 - 426 .
HAYS D C , GILA B P , PEARTON S J , et al . Energy band offsets of dielectrics on InGaZnO 4 [J ] . Applied Physics Reviews , 2017 , 4 ( 2 ): 021301 .
YAMAMOTO Y , KITA K , KYUNO K , et al . Structural and electrical properties of HfLaO x films for an amorphous high- k gate insulator [J ] . Applied Physics Letters , 2006 , 89 ( 3 ): 032903 .
CHOWDHURY M D H , MATIVENGA M , UM J G , et al . Effect of SiO 2 and SiO 2 /SiNx passivation on the stability of amorphous indium-gallium zinc-oxide thin-film transistors under high humidity [J ] . IEEE Transactions on Electron Devices , 2015 , 62 ( 3 ): 869 - 874 .
HAN Y B , CUI C , YANG J W , et al . H 2 O induced hump phenomenon in capacitance-voltage measurements of a-IGZO thin-film transistors [J ] . IEEE Transactions on Device and Materials Reliability , 2016 , 16 ( 1 ): 20 - 24 .
CHOI C H , KIM T , UEDA S , et al . High-performance indium gallium tin oxide transistors with an Al 2 O 3 gate insulator deposited by atomic layer deposition at a low temperature of 150 ℃: Roles of hydrogen and excess oxygen in the Al 2 O 3 dielectric film [J ] . ACS Applied Materials & Interfaces , 2021 , 13 ( 24 ): 28451 - 28461 .
D’ACUNTO G , JONES R , PÉREZ RAMÍREZ L , et al . Role of temperature, pressure, and surface oxygen migration in the initial atomic layer deposition of HfO 2 on anatase TiO 2 (101) [J ] . The Journal of Physical Chemistry C , 2022 , 126 ( 29 ): 12210 - 12221 .
UNIYAL S , YADAV N , UMA S , et al . Polyaminocarboxylate promoted synthesis of Hafnium/Zirconium substituted anion excess In 2 O 3 : Structure, optical and electrical conductivity properties [J ] . Ceramics International , 2022 , 48 ( 5 ): 6707 - 6715 .
HIKAKE K , LI Z , HAO J X , et al . A nanosheet oxide semiconductor FET using ALD InGaO x channel for 3-D integrated devices [J ] . IEEE Transactions on Electron Devices , 2024 , 71 ( 4 ): 2373 - 2379 .
IDE K , NOMURA K , HOSONO H , et al . Electronic defects in amorphous oxide semiconductors: A review [J ] . Physica Status Solidi (a) , 2019 , 216 ( 5 ): 1800372 .
ISLAM M M , SAHA J K , HASAN M M , et al . Spray-pyrolyzed high- k zirconium-aluminum-oxide dielectric for high performance metal-oxide thin-film transistors for low power displays [J ] . Advanced Materials Interfaces , 2021 , 8 ( 16 ): 2100600 .
GUAN Y H , ZHANG Y Q , LI J X , et al . Ultra-thin top-gate insulator of atomic-layer-deposited HfOx for amorphous InGaZnO thin-film transistors [J ] . Applied Surface Science , 2023 , 625 : 157177 .
CHO M H , CHOI C H , SEUL H J , et al . Achieving a low-voltage, high-mobility IGZO transistor through an ALD-derived bilayer channel and a hafnia-based gate dielectric stack [J ] . ACS Applied Materials & Interfaces , 2021 , 13 ( 14 ): 16628 - 16640 .
KIM N , JEONG J , LEE J W , et al . Unraveling the role of post-annealing in IGZO transistor for memory applications [J ] . Microelectronic Engineering , 2025 , 298 : 112322 .
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