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Relationship between capacitance and conductance in MOS capacitors

  • University of Udine
  • University of Modena and Reggio Emilia

Research output: Chapter in Book/Report/Conference proceedingsConference proceedingpeer-review

Abstract

In this work, we describe how the frequency dependence of conductance (G) and capacitance (C) of a generic MOS capacitor results in peaks of the functions G/ω and - ωdC/dω. By means of TCAD simulations, we show that G/ω and -ωdC/dω peak at the same value and at the same frequency for every bias point from accumulation to inversion. We illustrate how the properties of the peaks change with the semiconductor doping (ND), oxide capacitance (COX), minority carrier lifetime (τg), interface defect parameters (NIT, σ) and majority carrier dielectric relaxation time (τr). Finally, we demonstrate how these insights on G/ω and -ωdC/dω can be used to extract COX, ND and τg from InGaAs MOSCAP measurements.

Original languageEnglish
Title of host publicationProceedings of 2019 International Conference on Simulation of Semiconductor Processes and Devices, SISPAD 2019
EditorsFrancesco Driussi
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781728109404
DOIs
Publication statusPublished - Sept 2019
Event24th International Conference on Simulation of Semiconductor Processes and Devices, SISPAD 2019 - Udine, Italy
Duration: 4 Sept 20196 Sept 2019

Publication series

NameInternational Conference on Simulation of Semiconductor Processes and Devices, SISPAD
Volume2019-September

Conference

Conference24th International Conference on Simulation of Semiconductor Processes and Devices, SISPAD 2019
Country/TerritoryItaly
CityUdine
Period4/09/196/09/19

Keywords

  • C-V
  • Characterization
  • doping
  • extraction technique
  • G-V
  • minority carrier lifetime
  • MOS
  • multi-frequency
  • oxide capacitance

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