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Aluminum-based contacts for use in GaSb-based diode lasers

Tran, Thanh-Nam; Patra, Saroj Kumar; Breivik, Magnus; Fimland, Bjørn-Ove
Journal article, Peer reviewed
Accepted version
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URI
http://hdl.handle.net/11250/2464186
Date
2016
Metadata
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Original version
Journal of Vacuum Science and Technology B:Nanotechnology and Microelectronics. 2016, 34 (6), .   10.1116/1.4967300
Abstract
Aluminum-based contacts could be a good alternative to conventional gold-based contacts for a number of GaSb-based devices. In this study, the use of some Al-based contacts in GaSb-based diode lasers was investigated via the measurement of specific contact resistivity and laser output characteristics. The Al-based contacts to p-type GaSb(001) exhibited lower specific contact resistivities than the conventional Au-based contacts, whereas the opposite was the case for contacts to n-type GaSb(001). The good performance of GaSb-based laser diodes using Al-based contacts shows the applicability of this type of contact in GaSb-based devices. The contact between Al only and p-type GaSb(001), however, could suffer from a reliability problem when used in diode lasers, due to interdiffusion, in which case a diffusion barrier should be included.
Publisher
AIP Publishing
Journal
Journal of Vacuum Science and Technology B:Nanotechnology and Microelectronics

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