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Test Structure and Experimental Analysis of Emitter-Base Reverse Voltage Stress Degradation in Self-Aligned Bipolar Transistors

Hiromi SHIMAMOTO, Masamichi TANABE, Takahiro ONAI, Katsuyoshi WASHIO, Tohru NAKAMURA

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Summary :

The degradation of I-V characteristics under constant emitter-base reverse voltage stress in advanced self-aligned bipolar transistors was analyzed. Experimental analyses have been taken the stress field effect into account when predicting hot-carrier degradation. These analyses showed that base current starts to increase when the reverse voltage stress is about 3 V. The dependence of the base current change on reverse voltages of more than 3 V was also investigated experimentally, and equations expressing hot-carrier degradation in terms of the exponential dependence of excess base current on both reverse stress voltage and stress-enhancing voltage related to emitter-base breakdown voltage were derived.

Publication
IEICE TRANSACTIONS on Electronics Vol.E79-C No.2 pp.211-218
Publication Date
1996/02/25
Publicized
Online ISSN
DOI
Type of Manuscript
Special Section PAPER (Special Issue on Microelectronic Test Structures)
Category
Reliability Analysis

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