华南理工大学学报(自然科学版) ›› 2005, Vol. 33 ›› Issue (12): 92-95,104.

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GaAs MMIC钝化层介质Si3 N4的可靠性评价

李斌1 林丽1 黄云2 钮利荣3   

  1. 1.华南理工大学 物理科学与技术学院,广东 广州 510640;2.电子元器件可靠性物理及其应用技术国家级重点实验室,广东 广州 510610;3.南京电子器件研究所,江苏 南京 210016
  • 收稿日期:2004-11-05 出版日期:2005-12-25 发布日期:2005-12-25
  • 通信作者: 李斌(1967-),女,博士,副教授,主要从事半导体集成传感器,半导体器件与物理、半导体器件建模和可靠性研究 E-mail:llguisu@tom.com
  • 作者简介:李斌(1967-),女,博士,副教授,主要从事半导体集成传感器,半导体器件与物理、半导体器件建模和可靠性研究

Reliability Evaluation of Dielectric Si3 N4 Based on GaAs M M IC

Li Bin1  Lin Li1  Huang Yun2  Niu Li-rong3   

  1. 1.College of Physical Science and Technology,South China Univ.of Tech.,Guangzhou 5 10640,Guangdong,China;2.National Key Laboratory of Reliability Physics of Electronic Product,Guangzhou 510610,Guangdong,China;3.Nanjing Electronics Devices Institute,Nanjing 210016,Jiangsu,China
  • Received:2004-11-05 Online:2005-12-25 Published:2005-12-25
  • Contact: 李斌(1967-),女,博士,副教授,主要从事半导体集成传感器,半导体器件与物理、半导体器件建模和可靠性研究 E-mail:llguisu@tom.com
  • About author:李斌(1967-),女,博士,副教授,主要从事半导体集成传感器,半导体器件与物理、半导体器件建模和可靠性研究

摘要: 在斜坡电压应力条件下对GaAs MMIC介质层Si3 N4 的击穿特性进行了测试,探讨了电容面积、周长以及斜率对与时间有关的介质击穿(TDDB)特性的影响.实验结果表明,电容面积越大,周长越长,介质中的缺陷就越多,其击穿电压也就越低,可靠性越差.根据TDDB线性电场模型,采用不同斜率的斜坡电压应力测试数据预测了正常工作电压下的Si3 N4 寿命.与温度加速实验相比,文中所提方法快速、成本低廉.

关键词: GaAs MMIC, 击穿, 寿命预测, TDDB, 氮化硅

Abstract:

The breakdown characteristics of dielectric Si3 N4 based on GaAs MMIC(Microwave Monolithic Integrat-ed Circuit)were studied by using the ramped voltage-accelerated testing.The effects of the area and perimeter of capacitor,as well as the ramped rate on TDDB(Time Dependent Dielectric Breakdown)characteristics were also investigated.The results indicate that a greater area or a longer perimeter will result in more defects in the dielec-tric,thus causing much lower breakdown voltage and poorer reliability.According to the results of the ramped volt-age-accelerated testing with different ramped rates,the lifetime of silicon nitride capacitor at a normal working volt-age was finally predicted based on the TDDB linear field model.It is concluded that,compared with the tempera-ture-accelerated testing,the proposed method is of much faster speed and lower cost.

Key words: GaAs MMIC, breakdown, lifetime predication, TDDB, silicon nitride