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Is there a future for semiconducting silicides? (invited)

✍ Scribed by Karen J Reeson; Jane Sharpe; Milton Harry; Daniel Leong; Colin McKinty; Adrian Kewell; Manon Lourenço; Yan Ling Chen; G Shao; Kevin P Homewood

Publisher
Elsevier Science
Year
2000
Tongue
English
Weight
468 KB
Volume
50
Category
Article
ISSN
0167-9317

No coin nor oath required. For personal study only.

✦ Synopsis

Silicon is commercially by far the most important semiconductor, however, because silicon has an indirect band gap it would initially appear to be unsuitable for optoelectronic applications. A major research challenge is, therefore, to achieve high intensity light emission from silicon and to engineer active and passive optical structures within it. This paper examines the potential of semiconducting silicides (principally, bFeSi and Ru Si ) for silicon-based optoelectronic applications. It 2 2 3 traces the history of the subject from the first photoluminescence spectrum from bFeSi to a working LED which uses 2 bFeSi precipitates as a route for fast radiative recombination. Recent results on semiconducting Ru Si are also reported, 2 2 3

which show, for the first time, that this material can be fabricated by high dose ion implantation. They also reveal a direct band gap of 0.91 eV. The future for semiconducting silicides is examined and, although there are still barriers to overcomethe future looks bright.

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