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原子层沉积系统设计的研究 被引量:9

Preliminary Results in Design of Atomic Layer Deposition Setup
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摘要 本文介绍作者自行设计的原子层沉积(ALD)实验系统和所沉积薄膜的检测结果。为了研究ALD技术,作者设计了一套试验性的ALD沉积系统。该系统主要由反应腔、前驱体容器、真空泵、控制系统等部件构成。两个前驱体容器带有加热装置,支持气体或液体前驱体。前驱体、反应腔的温度,沉积过程中气体的交替,以及各种参数都可以设定,并由控制系统自动控制。在系统测试中,使用Al2(CH3)3和H2O作为前驱体,在含有Si-H键的Si基片上沉积Al2O3高k介质薄膜。使用电子探针分析仪分析薄膜成分后,证实了所沉积的薄膜是Al2O3。使用XPS分析薄膜表面时只检测到Al,O元素,没有检测到Si元素,说明Al2O3薄膜是连续的,完整地覆盖了Si表面。使用X射线光电子谱检测元素面分布的结果显示,Al,O在Si上的分布具有较好均一性,表明Al2O3薄膜的均匀性良好。使用电子束照射已沉积Al2O3的Si基片时,发现有大量电子累积在薄膜表面,说明所沉积的Al2O3具有良好的介电性。 A prototyped atomic layer deposition setup was designed,constructed,and tested in the growth of Al2O3 atomic layers.The set-up consists of a reactor chamber,two precursor chambers with accessories,including resistive heaters and inlets of supporting gas and/or liquid,pumping system,and an automatic control unit.The control unit automatically regulates the temperatures in the reactor and precursor chambers,and other parameters of interest.High k Al2O3 layers were deposited on hydrogen-terminated Si substrates with Al2(CH3)3 and H2O as the two precursors.The microstructures and electronic properties of the layers were characterized with electron probe micro-analyzer and X-ray photoelectron spectroscopy.The preliminary results confirm that the setup is capable of depositing high quality atomic layers.
出处 《真空科学与技术学报》 EI CAS CSCD 北大核心 2011年第1期57-60,共4页 Chinese Journal of Vacuum Science and Technology
关键词 原子层沉积 前驱体 高k介质薄膜 表面分析 Atomic layer deposition Precursor High k thin film Surface analysis
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参考文献6

  • 1Markku Leskel,Mikko Ritala.Atomic Layer Deposition Chemistry:Recent Developments and Future Challenges[J].Angewandte Chemie International Edition,2003,42(45):5548-5554. 被引量:1
  • 2Kim H.Atomic Layer Deposition of Metal and Nitride Thin Films:Current Research E fforts and Applications for Semiconductor Device Processing[J].Journal of Vacuum Science & Technology B,2003,21(6):2231-2261. 被引量:1
  • 3Lim B S,Rahtu A,Gordon R G.Atomic Layer Deposition of Transition Metals[J].Nature Materials,2003,2(11):749-754. 被引量:1
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  • 5Schumacher M,Baumann P K,Seidel T.AVD and ALD as Two Complementary Technology Solutions for Next Generation Dielectric and Conductive Thin-Film Processing[J],2006,12(2-3):99-108. 被引量:1
  • 6刘雄英,黄光周,范艺,于继荣.原子层沉积技术及应用发展概况[J].真空科学与技术学报,2006,26(z1):146-153. 被引量:12

二级参考文献61

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