The Role of the Quantization Effects on the Operation of 50 nm MOSFET and 250 nm FIBMOS Devices

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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.

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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