期刊
IEEE TRANSACTIONS ON ELECTRON DEVICES
卷 55, 期 2, 页码 547-556出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TED.2007.912365
关键词
III-V; alternative substrates; conductance method; electrical characterization; Ge MOSFET; interface trap density extraction; Nicollian-Goetzberger
Conventional techniques and related capacitance-voltage characteristic interpretation were established to evaluate interface trap density on Si substrates. We show that blindly applying these techniques on alternative substrates can lead to incorrect conclusions. It is possible to both under- and overestimate the interface trap density by more than an order of magnitude. Pitfalls jeopardizing capacitance- and conductance-voltage characteristic interpretation for alternative semiconductor MOS are elaborated. We show how the conductance method, the most reliable and widely used interface trap density extraction method for Si, can be adapted and made reliable for alternative semiconductors while maintaining its simplicity.
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