NDLI: Uncooled THz/sub-THz Rectifying Detectors: FET vs. SBD

Content Provider	Springer Nature Link
Author	Sakh, M. Sizov, F. Golenkov, A.
Copyright Year	2013
Abstract	The parameters (responsivity R and noise equivalent power (NEP)) of long channel unbiased (zero drain-source bias (V $_{DS}$ = 0)) silicon field effect transistors (FET) as THz/sub-THz detectors with account of some parasitics were considered. These parameters and their radiation frequency ν dependences are compared with those of contemporary Schottky barrier diode (SBD) THz/sub-THz detectors. To describe and compare the known experimental data for both of detectors similar models, taking into account the parasitics (some FET or SBD resistances and capacities), were used. It is shown that taking into account the parasitics and detector-antenna impedance matching one can describe Si FET detector parameters and estimate the performance limits of such detectors. The R and NEP radiation frequency ν dependences are similar for FET and SBD detectors and are proportional to ν $^{-2}$ or to ν $^{-4}$. The model used for SBD detectors describes well the known experimental data for optical NEP $^{opt}$ but for Si FET ones the sufficient scatter in experimental data is observed. The reason of it seems is mainly due to non-optimized technologies for FETs as detectors for THz/sub-THz radiation.
Starting Page	798
Ending Page	814
Page Count	17
File Format	PDF
ISSN	18666892
Journal	International Journal of Infrared and Millimeter Waves
Volume Number	34
Issue Number	12
e-ISSN	18666906
Language	English
Publisher	Springer US
Publisher Date	2013-09-08
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	THz/sub-THz FET and SBD detectors Parasitics and performance limits Electrical Engineering Electronics and Microelectronics, Instrumentation Optics and Electrodynamics
Content Type	Text
Resource Type	Article
Subject	Instrumentation Condensed Matter Physics Electrical and Electronic Engineering Radiation

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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