Thermal Profiles Within the Channel of Planar Gunn Diodes Using Micro-Particle Sensors

James Glover; Ata Khalid; David Cumming; Geoffrey M. Dunn; Martin Kuball; Miguel Montes Bajo; Chris H. Oxley

doi:10.1109/LED.2017.2731961

Thermal Profiles Within the Channel of Planar Gunn Diodes Using Micro-Particle Sensors

James Glover^*, Ata Khalid, David Cumming, Geoffrey M. Dunn, Martin Kuball, Miguel Montes Bajo, Chris H. Oxley

^*Corresponding author for this work

School of Physics

Research output: Contribution to journal › Article (Academic Journal) › peer-review

4 Citations (Scopus)

Abstract

This letter describes the use of a novel micro-particle sensor (∼3μm diameter) and infra-red microscopy to measure the temperature profile within the active channel (typically 3-μm length and 120-μm width) of planar Gunn diodes. The method has enabled detailed temperature measurements showing an asymmetrical temperature profile along the active width of these devices. The asymmetrical temperature profile suggests a similar behavior in the channel current density, which may contribute to the lower than expected RF output power.

Original language	English
Article number	7993046
Pages (from-to)	1325-1327
Number of pages	3
Journal	IEEE Electron Device Letters
Volume	38
Issue number	9
Early online date	26 Jul 2017
DOIs	https://doi.org/10.1109/LED.2017.2731961
Publication status	Published - 1 Sep 2017

Structured keywords

CDTR

Keywords

gunn devices
Infrared measurements
planar objects
temperature measurement

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10.1109/LED.2017.2731961

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Cite this

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title = "Thermal Profiles Within the Channel of Planar Gunn Diodes Using Micro-Particle Sensors",

abstract = "This letter describes the use of a novel micro-particle sensor (∼3μm diameter) and infra-red microscopy to measure the temperature profile within the active channel (typically 3-μm length and 120-μm width) of planar Gunn diodes. The method has enabled detailed temperature measurements showing an asymmetrical temperature profile along the active width of these devices. The asymmetrical temperature profile suggests a similar behavior in the channel current density, which may contribute to the lower than expected RF output power.",

keywords = "gunn devices, Infrared measurements, planar objects, temperature measurement",

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Thermal Profiles Within the Channel of Planar Gunn Diodes Using Micro-Particle Sensors. / Glover, James; Khalid, Ata; Cumming, David; Dunn, Geoffrey M.; Kuball, Martin; Montes Bajo, Miguel; Oxley, Chris H.

In: IEEE Electron Device Letters, Vol. 38, No. 9, 7993046, 01.09.2017, p. 1325-1327.

Research output: Contribution to journal › Article (Academic Journal) › peer-review

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