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<H1><A href="http://www.sciencedaily.com/images/2010/08/100802101813-large.jpg"
rel=thumbnail><IMG style="WIDTH: 381px; HEIGHT: 243px" height=189 alt=""
src="http://www.sciencedaily.com/images/2010/08/100802101813.jpg" width=300
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<DIV id=caption
style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; PADDING-BOTTOM: 10px; PADDING-TOP: 5px"><EM><FONT
size=2>A small PETE device made with cesium-coated gallium nitride
</FONT></EM><EM><FONT size=2>glows while being tested inside an ultra-high
vacuum chamber. </FONT></EM><EM><FONT size=2>The tests proved that the process
simultaneously converted light and heat energy into electrical current. (Credit:
Courtesy of Nick Melosh</FONT>)</EM></DIV></H1>
<H1>High efficiency solar cells</H1>
<P><FONT face=Tahoma><EM>Science Daily</EM> reports that a new process could
double the efficiency of existing solar cell technology.</FONT></P>
<P><FONT face=Tahoma>A new process that simultaneously combines the light and
heat of solar radiation to generate electricity could offer more than double the
efficiency of existing solar cell technology, say the Stanford engineers who
discovered it and proved that it works.</FONT></P>
<P><FONT face=Tahoma>Called "Photon Enhanced Thermionic Emission, or PETE, the
process promises to surpass the efficiency of existing photovoltaic and thermal
conversion technologies.</FONT></P>
<P><FONT face=Tahoma>"This is really a conceptual breakthrough, a new energy
conversion process, not just a new material or a slightly different tweak," said
Nick Melosh, an assistant professor of materials science and engineering, who
led the research group. "It is actually something fundamentally different about
how you can harvest energy."</FONT></P>
<P><FONT face=Tahoma>Read the full Science Daily story <EM>New Solar Energy
Conversion Process Could Double Solar Efficiency of Solar Cells </EM>at
<BR></FONT><A
href="http://www.sciencedaily.com/releases/2010/08/100802101813.htm"
target=_blank><FONT
face=Tahoma>http://www.sciencedaily.com/releases/2010/08/100802101813.htm</FONT></A></P>
<P><FONT face=Tahoma> </FONT></P><FONT face=Tahoma><FONT size=1><FONT
size=3>Fonte:<STRONG>George Boorer ZL3PN</STRONG></FONT>
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