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本文利用经适当修改的Ｙｉｈ－ＦｅｎｇＣｈｙａｎ等人的ＰＥＴ大注人模型编制了程序，结合实例模拟了在大注入条件下具有发射区、基区指数掺杂分布的ＰＥＴ的输人特性、输出特性、电流增益和频率特性（ｆｒ和ｆｍａｘ），并对一些特性曲线进行了分析．此程序可用于研究ＰＥＴ特性与器件结构参数之间的关系．
In this paper, a modified program of PET large injection model was developed by Yih-FengChyan et al., Which was modified as appropriate. The input characteristics and output characteristics of PET with emission area and exponential doping distribution under large injection conditions were simulated. Current gain and frequency characteristics (fr and fmax), and some characteristic curves were analyzed. This procedure can be used to study the relationship between PET characteristics and device structure parameters.