[Ronja] Faster switching of the LED

[Deepak Mishra]

Hi !

I was looking around the internet, when I found this -
http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6TY5-3YRWB18-P&_user=10&_rdoc=1&_fmt=&_orig=search&_sort=d&view=c&_acct=C000050221&_version=1&_urlVersion=0&_userid=10&md5=d0e66d4c232994d25c2a4c54ca295e33
It is a research paper published by Wayne State University, USA

Abstract

We have proposed a method of increasing the switching speed of a
light-emitting diode by controlling the voltage across the device rather
than the current through it. While the speed of conventional current-control
methods is limited by the recombination processes in the active region, with
their characteristic time being of the order of several nanoseconds, we have
shown both analytically and numerically, that the characteristic time of the
voltage-control method can be two orders of magnitude smaller. Such a speed
is provided by a large pulsed current that rapidly removes excessive
carriers from the active region if the device is being switched off, and
injects them into the active region if the device is being switched on.
I dont think RONJA already uses this.
Could this be a final step towards a speed > 10mbps , may be 20 mbps if not
100 mbps
I dont have access to this paper, could some one download and send it to the
mailing list ?

Regards,
Deepak
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