首页 | 本学科首页   官方微博 | 高级检索  
     

集电极偏置电流对硅npn晶体管γ辐照效应的影响
引用本文:程兴华,王健安,龚敏,石瑞英,蒲林,刘伦才,郭丰,杨晨. 集电极偏置电流对硅npn晶体管γ辐照效应的影响[J]. 半导体学报, 2007, 28(8): 1248-1251
作者姓名:程兴华  王健安  龚敏  石瑞英  蒲林  刘伦才  郭丰  杨晨
作者单位:四川大学物理科学与技术学院 微电子学系,成都 610064;模拟集成电路国家重点实验室,重庆 400060;四川大学物理科学与技术学院 微电子学系,成都 610064;微电子技术四川省重点实验室,成都 610064;四川大学物理科学与技术学院 微电子学系,成都 610064;微电子技术四川省重点实验室,成都 610064;模拟集成电路国家重点实验室,重庆 400060;模拟集成电路国家重点实验室,重庆 400060;四川大学物理科学与技术学院 微电子学系,成都 610064;四川大学物理科学与技术学院 微电子学系,成都 610064
摘    要:
对硅npn双极晶体管(C2060)室温下不同集电极偏置电流条件下γ辐照的总剂量效应进行了研究.结果表明,npn晶体管的辐照损伤程度随着辐照总剂量的增加而增加;尤其是实验中发现:在相同的辐照总剂量下随着辐照时集电极偏置电流的增加,晶体管的辐照损伤程度却在减轻.空间电荷模型的观点并不能很好地解释辐照损伤与辐照集电极偏置电流的关系.文章对空间电荷模型进行了修正,认为除氧化物俘获电荷和界面俘获电荷外,还会在外基区Si-SiO2界面附近形成电中性的电偶极子.利用修正后的理论可以很好地解释所有的实验结果.

关 键 词:集电极偏置电流  总剂量效应  电偶极子  空间电荷模型
文章编号:0253-4177(2007)08-1248-04
修稿时间:2007-04-11

Effects of Different Collector Current Biases on γ Radiation Response of npn-BJT
Cheng Xinghu,Wang Jian''an,Gong Min,Shi Ruiying,Pu Lin,Liu Luncai,Guo Feng and Yang Chen. Effects of Different Collector Current Biases on γ Radiation Response of npn-BJT[J]. Chinese Journal of Semiconductors, 2007, 28(8): 1248-1251
Authors:Cheng Xinghu  Wang Jian''an  Gong Min  Shi Ruiying  Pu Lin  Liu Luncai  Guo Feng  Yang Chen
Affiliation:Department of Microelectronics,Sichuan University,Chengdu 610064,China;National Laboratory of Analog Integrated Circuits,Chongqing 400060,China;Department of Microelectronics,Sichuan University,Chengdu 610064,China;Key Laboratory of Microelectronic Technology of Sichuan Province,Chengdu 610064,China;Department of Microelectronics,Sichuan University,Chengdu 610064,China;Key Laboratory of Microelectronic Technology of Sichuan Province,Chengdu 610064,China;National Laboratory of Analog Integrated Circuits,Chongqing 400060,China;National Laboratory of Analog Integrated Circuits,Chongqing 400060,China;Department of Microelectronics,Sichuan University,Chengdu 610064,China;Department of Microelectronics,Sichuan University,Chengdu 610064,China
Abstract:
The total dose effect of y irradiation at different biased collector currents on Si npn-BJTs was investigated. The experimental results show that the irradiation-induced degradation of an npn-BJT increases with the total dose; however,it decreases with the increase of the collector current at the same total dose. This phenomenon cannot be well explained by the recent space charge model. In this paper,a revised model is presented,in which there are electrically neutral dipoles near the Si-SiO2 interface of the extrinsic base region. By using the new model,all the experimental results have been well interpreted.
Keywords:collector current bias  total dose effect  electrically neutral dipoles  space charge model
本文献已被 CNKI 维普 万方数据 等数据库收录!
点击此处可从《半导体学报》浏览原始摘要信息
点击此处可从《半导体学报》下载全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号