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==Why Nano Gallium Arsenide Solar Cells?==
 
==Why Nano Gallium Arsenide Solar Cells?==
The base function of the GaAs solar cell is to convert the radiant light energy of the sun into electricity.  This is an interesting objective because the sun's rays turn into heat energy more easily than electricity.   
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The base function of the GaAs solar cell is to convert the radiant light energy of the sun into electricity.  Why use gallium arsenide if other materials that exist can produce a higher efficiency?  Well there are a few factors that need to be taken into account.  [[Gallium]] is even more rare than [[gold]].  Cost can be a bit of a detriment.  However even in spite of this, [[gallium arsenide]] [[solar cells]] can produce efficiency levels in the range on 25-30%.  This is in the zone that is needed for practical use.  [[Gallium arsenide]] [[solar cells]] can have roughly 25% efficiency rating with only one junctionThis makes them a good candidate for a stacked type of solar panels used for collecting light from all across the spectrum.
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In a recent article in the magazine ''Electronic News'' [[gallium arsenide]] was tested on a [[germanium]] [[substrate]].  The resulting efficiency level was 24.9% for a single junction.  This although not amazingly impressive, is high enough to warrant more investigation for full spectrum light capture.  The test cell, which was .25 centimeters<sup>2</sup>, had an open circuit voltage of 999mV, a short circuit current of 29.7 square mA/cm, and a fill factor of 83.2%.
    
==Future Development==
 
==Future Development==

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