Minimum detectable strain improvement in junctionless nanowire FET sensors

Pushpapraj Singh, Jianmin Miao, Woo Tae Park, Dim Lee Kwong

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

2 Scopus citations

Abstract

We present the piezoresistive and noise measurement results on junctionless nanowire field-effect transistor (JL-NWFET). Results reveal the channel doping and gate bias impacts on the piezoresistance, threshold voltage and low frequency noise (LFN). In JL-NWFET, at a doping level of 6.7×10 18 cm -3, we found 91% increment in the piezoresistive effect compared to device with a doping level 6.7×10 19 cm -3. The JL-NWFET shows ∼5 orders of magnitude lower spectral noise than the inversion mode FETs, and LFN is found less sensitive to gate bias voltage. Channel doping shows a wide tunability of threshold voltage without any influence on LFN. The picoampere drain current noise helps achieve a superior resolution (minimum detectable strain) and formulate JL-NWFET as an ultrasensitive sensing element for the nanoelectromechanical sensors.

Original languageEnglish
Title of host publication2012 IEEE 25th International Conference on Micro Electro Mechanical Systems, MEMS 2012
Pages1328-1331
Number of pages4
DOIs
StatePublished - 2012
Event2012 IEEE 25th International Conference on Micro Electro Mechanical Systems, MEMS 2012 - Paris, France
Duration: 29 Jan 20122 Feb 2012

Publication series

NameProceedings of the IEEE International Conference on Micro Electro Mechanical Systems (MEMS)
ISSN (Print)1084-6999

Conference

Conference2012 IEEE 25th International Conference on Micro Electro Mechanical Systems, MEMS 2012
Country/TerritoryFrance
CityParis
Period29/01/122/02/12

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