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Reality check needed: New technology doubles solar conversion efficiency

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p_g
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re: Reality check needed: New technology doubles solar conversion efficiency
p_g   10/1/2010 1:36:53 AM
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No direct benefit but this will help them reduce power consumption.. may be reduce electricity price :)

MikeLC
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re: Reality check needed: New technology doubles solar conversion efficiency
MikeLC   8/30/2010 5:50:07 PM
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That's tough! How about just on their roofs? :-)

Kevin.Jackson
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re: Reality check needed: New technology doubles solar conversion efficiency
Kevin.Jackson   8/20/2010 1:02:58 PM
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I've been hearing about a new breakthrough in solar technology every month or so for 20 years. In the 80's TI announced they would product solar cells dirt cheap in a continuous strip process. I'll believe it's real when I see it at Walmart!

portapull
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re: Reality check needed: New technology doubles solar conversion efficiency
portapull   8/14/2010 2:11:36 PM
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is it a break through?

sierra tango
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re: Reality check needed: New technology doubles solar conversion efficiency
sierra tango   8/12/2010 9:56:52 PM
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The long-term solution to PV efficiencies may lie with a discovery probably covered here a few years ago, "black silicon" from SiOnyx, when finally brought to production it should yield significant improvements

jg_
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re: Reality check needed: New technology doubles solar conversion efficiency
jg_   8/12/2010 9:23:08 PM
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NO information of actual conversion numbers, so that makes it horizon stuff. PETE reminds me of the Quantum Dot Solar Enhancement claims - impressive claims, but sparse on REAL data points. Still, PETE could be a natural complement to conventional Concentrating Solar. ["...the PETE device doesn't hit peak efficiency until it is well over 200 degrees C."]

pixies
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re: Reality check needed: New technology doubles solar conversion efficiency
pixies   8/11/2010 8:13:17 PM
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Cesium will get oxidized over time, the device have to operate in vacuum. If this is used on a large scale, Cesium price will go up significantly and the cost will go up dramatically.

SallyF
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re: Reality check needed: New technology doubles solar conversion efficiency
SallyF   8/11/2010 6:57:00 PM
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The assistant professor said "And the materials needed to build a device to make the process work are cheap and easily available, meaning the power that comes from it will be affordable." That is exactly the same thing that was said of silicon solar cells - its cheap and abundant as sand on the beach. University researchers sometimes don't understand product manufacturing issues. Also, the article described the device "glowing white in a vacuum". Its getting more complex and expensive already. Obviously not enough information was provided to base an analysis on. Of course we would all love to see solar power become less expensive. But even "twice as efficient", isn't enough to meet the extravagant expectations of the public, even if it is cheap. Achieving the theoretical efficiency of solar cells or PETE devices would make application more widespread, but even that wouldn't replace coal, oil, hydro and nuclear.

prabhakar_deosthali
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re: Reality check needed: New technology doubles solar conversion efficiency
prabhakar_deosthali   8/11/2010 7:12:53 AM
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As per my understanding Sterling Engine technology which is age old and proven could use the Heat Energy from solar concentrators in a more efficient and simple way than this new concept. And the Stirling Engine based power plants can use alternate fuel also during the sun-down period such as the monsoon months in India

chrisnfolsom
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re: Reality check needed: New technology doubles solar conversion efficiency
chrisnfolsom   8/10/2010 11:13:33 PM
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As always there are many holes in the examples and logic used - a six inch wafer is used as an example, but for what ultimate power output, and what square footage of light would need to be reflected to utilize such a device? As always a health dose of skepticism is needed, but it does seem like a very promising start!

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