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Future Energy needs met with Quantum Dots

Oldtree · 2006-11-10 18:46:10

Is this a valid notion by prof ted sargent? http://www.ece.utoronto.ca/English/page-1-677-1.html

10-11-2006 6:46pm

#1

Oldtree

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Is this a valid notion by prof ted sargent?

http://www.ece.utoronto.ca/English/page-1-677-1.html

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#2 10-11-2006 9:13pm

Capt'n Midnight

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No.

It's a bit like a photomultiplier tube, in that a high voltage is used to detect a low energy photon by adding energy to any electron it ejects from an atom with.

In this case the bias voltage is 40V.

An electron with 1.8V to 3.8V will eject a photon, there is energy lost in this so the photon of the associated colour will have less energy.
http://www.oksolar.com/led/led_color_chart.htm

BTW with a silicon photocell you get out about 0.4V from electrons ejected by photons. just mentioning it because it's 1% of the energy that electron would have when you apply a field of 40V to it (or whatever the termonology is)

So no it's not fantastic or even break even.

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