Thermal profiles within the channel of planar gunn diodes using micro-particle sensors

Glover, J., Khalid, A. , Cumming, D. , Dunn, G. M., Kuball, M., Bajo, M. M. and Oxley, C. H. (2017) Thermal profiles within the channel of planar gunn diodes using micro-particle sensors. IEEE Electron Device Letters, 38(9), pp. 1325-1327. (doi:10.1109/LED.2017.2731961)

Glover, J., Khalid, A. , Cumming, D. , Dunn, G. M., Kuball, M., Bajo, M. M. and Oxley, C. H. (2017) Thermal profiles within the channel of planar gunn diodes using micro-particle sensors. IEEE Electron Device Letters, 38(9), pp. 1325-1327. (doi:10.1109/LED.2017.2731961)

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Abstract

The paper describes the use of a novel microparticle sensor (~3 μm diameter) and infra-red (IR) 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 behaviour in the channel current density, which may contribute to the lower than expected RF output power.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Cumming, Professor David and Khalid, Dr Ata-ul-Habib
Authors: Glover, J., Khalid, A., Cumming, D., Dunn, G. M., Kuball, M., Bajo, M. M., and Oxley, C. H.
College/School:College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering
Journal Name:IEEE Electron Device Letters
Publisher:Institute of Electrical and Electronics Engineers
ISSN:0741-3106
ISSN (Online):1558-0563
Published Online:26 July 2017
Copyright Holders:Copyright © 2017 IEEE
First Published:First published in IEEE Electron Device Letters 38(9):1325-1327
Publisher Policy:Reproduced in accordance with the copyright policy of the publisher

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