期刊文献+

BST薄膜的反应离子刻蚀研究

Characteristics of Reactive Ion Etching of BST Thin Film
在线阅读 下载PDF
导出
摘要 钙钛矿结构的钛酸锶钡(BST)薄膜作为优良的介电、铁电材料在新一代的微机械系统(MEMS)、动态存储器(DRAM)及其他器件上的广泛应用,使得BST薄膜的刻蚀特性越来越重要。该文利用反应离子刻蚀装置,研究了溶胶-凝胶工艺制备的钛酸锶钡薄膜在CHF3/Ar等离子气体中的刻蚀情况。通过分析刻蚀速率及薄膜刻蚀前后表面形貌的变化,结果表明,刻蚀过程是离子轰击、离子辅助化学反应和化学反应刻蚀共同作用的结果。刻蚀速率为5.1 nm/min。Sr元素较难去除,成为阻碍刻蚀的重要因素。 Perovskite (Ba,Sr)TiO3 (B ST) thin film is prepared via Sol-Gel methods. The etching characteristics of Sol-Gel-derived BST films were investigated in a reactive ion etching (RIE) setup using CHF3/At plasma. The morphology and etching rate were measured by X-ray diffraction (XRD) and atomic force microscopy (AFM). The properties of the micropattern after etching were measured by SEM and EDS system. The etching mechanism of BST thin film in RIE was the cooperation of ion bambardment, ions assist chemical reaction and reaction etching effects. The Sr atoms were hard to remove off than any other atoms. The higher etching rate can be up to 5.1 nm/ rain.
作者 史鹏 姚熹
出处 《压电与声光》 CAS CSCD 北大核心 2006年第1期64-66,共3页 Piezoelectrics & Acoustooptics
基金 国家科技部"九七三"计划基金资助项目(2002CB613305) 中国-以色列国际合作基金资助项目
关键词 钛酸锶钡(BST) 薄膜 反应离子刻蚀 CHF3 BST thin film RIE CHF3
作者简介 史鹏(1973-),男,陕西西安人,讲师,博士,主要从事薄膜的制备和器件化研究。
  • 相关文献

参考文献9

  • 1HIRATA G A,L6PEZ L L,SIQUEIROS J M,et al.Ferroelectric Ba1-xSrxTiO3 thin films for DRAM's applications[J]. Superficiesy Vacio, 1999, 9 (2) : 147-149.
  • 2DEORNELLAS S,RAJORA P,COFER A. Challenges for plasma etch integration of ferroelectric capacitors in FeRAM's and DRAM's[J]. Integrated Ferroelectrics,1997,17(1-4) : 395-402.
  • 3齐兵,何夕云,丁爱丽,仇萍荪,陈先同,罗维根.水基溶胶-凝胶法制备Ba_(0.5)Sr_(0.5)TiO_3薄膜及其介电性能研究[J].无机材料学报,1998,13(3):389-395. 被引量:15
  • 4SHIN J C,PARK J H, HWANG C S,et al. Dielectric and electrical properties of sputter grown (Ba,Sr)TiO3 thin films[J]. J Appl Phys, 1999, 86(1): 506-513.
  • 5CHUNG H J,CHOI J H,LEE J Y,et al. Preparation and electrical properties of (Ba,Sr)TiO3 thin films deposited by liquid source misted chemical deposition[J].Thin Solid Films, 2001, 382(1-2): 106-112.
  • 6YOO C Y, PARK H B, HWANG D S, et al. Integration issues of (Ba,Sr)TiO3 thin films in high density DRAM devices [C]. In MRS symposium proceeding of Ferroelectrie Thin Films Ⅷ, 2000, 596(1) : 11-23.
  • 7GIRIDHARAN N V , VARATHARAJAN R ,JAYAVEL R , et al . Fabrication and characterisation of ( Ba ,Sr) TiO3 thin films by Sol-Gel technique through organic precursor route[J]. Materials Chemistry and Physics, 2000,65(3): 261-265.
  • 8WUU D S, LIN C C, HORNG R H,et al. Etching characteristics and plasma-induced damage of high-kBa0.5Sr0.5TiO3 thin-film capacitors [J]. Journal of Vacuum Science & Technology B (Microelectronics and Nanometer Structures), 2001, 19(6) : 2 231-2 236.
  • 9CHRISTOPHOROUS L G, OLTHOFF J K, RAO MV V S. Electron interactions with CHF3 [J]. J Phys Chem Ref Data, 1997, 26(1) : 1-15.

二级参考文献3

  • 1Tu L Y,J Mater Res,1996年,11卷,10期,2556页
  • 2Yi Guanghua,J Sol-Gel Tech,1996年,6卷,65页
  • 3Robert Tsu,Mater Res Soc Symp Proc,1995年,361页

共引文献14

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部