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Chin. Phys. B, 2019, Vol. 28(6): 068503    DOI: 10.1088/1674-1056/28/6/068503

Research on SEE mitigation techniques using back junction and p+ buffer layer in domestic non-DTI SiGe HBTs by TCAD

Jia-Nan Wei(魏佳男), Chao-Hui He(贺朝会), Pei Li(李培), Yong-Hong Li(李永宏)
School of Nuclear Science and Technology, Xi'an Jiaotong University, Xi'an 710049, China

In this paper we investigate two techniques for single event effect (SEE) mitigation by using back junction and p+ buffer layer in non-deep trench isolation (DTI) domestic silicon-germanium heterojunction bipolar transistors (SiGe HBTs) based on technology computer aided design (TCAD) simulation. The effectiveness of the two mitigation techniques and the influence of various structure parameters are investigated. Simulation results indicate that the two techniques are more effective in reducing collector charge collection induced by heavy ions striking at positions outside the collector-substrate (C-S) junction where charge collection is dominated by diffusion. By properly adjusting the parameters, charge collection of events outside the C-S junction can be reduced by more than an order of magnitude, while charge collection of events in the device center is halved without affecting the direct current (DC) and alternating current (AC) characteristics of the SiGe HBTs.

Keywords:  silicon-germanium HBT      single event effect      mitigation technique      TCAD simulation  
Received:  06 March 2019      Revised:  01 April 2019      Accepted manuscript online: 
PACS:  85.30.Pq (Bipolar transistors)  
  61.80.Jh (Ion radiation effects)  
  61.80.Az (Theory and models of radiation effects)  

Project supported by the National Natural Science Foundation of China (Grant Nos. 11775167, 11575138, and 11835006).

Corresponding Authors:  Chao-Hui He     E-mail:

Cite this article: 

Jia-Nan Wei(魏佳男), Chao-Hui He(贺朝会), Pei Li(李培), Yong-Hong Li(李永宏) Research on SEE mitigation techniques using back junction and p+ buffer layer in domestic non-DTI SiGe HBTs by TCAD 2019 Chin. Phys. B 28 068503

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