Vasileska D., Knezevic I., Akis R., Ferry D.K.
Arizona State University, US
Keywords: asymmetric device structures, MOSFET's, on-state current degradation, space-quantization effect, threshold voltage degradation
We investigate quantum-mechanical space quantization effects in conventional MOSFET devices and asymmetric device structure fabricated via focused ion beam technique (FIBMOS device). We find that the inclusion of the quan-tum-mechanical space-quantization effects along the growth direction gives rise to larger average displacement of the carriers from the semiconductor-oxide interface and reduced sheet electron density. This, in turn, leads to threshold voltage shift on the order of 150 to 200 mV, which affects the magnitude of the on-state current and gives rise to transconductance degradation.
Journal: TechConnect Briefs
Volume: 1, Technical Proceedings of the 2002 International Conference on Modeling and Simulation of Microsystems
Published: April 22, 2002
Pages: 556 - 559
Industry sector: Sensors, MEMS, Electronics
Topic: Modeling & Simulation of Microsystems
ISBN: 0-9708275-7-1