摘要
本文对SIMOX/SOI全耗尽N沟MOSFET中单晶体管Latch状态对器件性能的影响进行了实验研究.实验结果表明,短时间的Latch条件下的电应力冲击便可使全耗尽器件特性产生明显蜕变.蜕变原因主要是Latch期间大量热电子注入到背栅氧化层中形成了电子陷阱电荷(主要分布在漏端附近)所致.文章还对经过Latch应力后,全耗尽SOI器件在其他应力条件下的蜕变特性进行了分析.
Abstract An experimental investigation on the influence of single transistor Latch phenomenon on fully-depleted SIMOX/SOI MOSFET's is presented.The experimental results show that the degradation of device is enhanced under short time Latch stess condition. The degradation results from electron trap charges in back gate oxide located around drain formed by injection of hot electron in latch condition.The degradation of device is very easy after the Latch stress,which is different from bulk device and normal SOl device.