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Print-On Polymer Multiplies Solar Output

Photovoltaic cells output boosted with carbon
1/22/2015 09:30 AM EST
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R_Colin_Johnson
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Re: Two Electrons per Photon ... long term results
R_Colin_Johnson   2/6/2015 11:50:24 PM
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Dr. Quine, well we will find out soon--sometimem in 2015--when they promise to release the results if their longevity studies. 

DrQuine
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Re: Two Electrons per Photon ... long term results
DrQuine   2/6/2015 5:29:52 PM
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The longevity issues obviously are critical since the solar panel systems have pay off schedules measured in years. If any rework or maintenance of the surface is required up on the rooftops (or the panel efficiency drops), that will have very a serious impact on the economic viability of the systems.

R_Colin_Johnson
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Re: Two Electrons per Photon ... long term results
R_Colin_Johnson   2/3/2015 4:42:10 PM
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Dr.Quine: measuring the longevity and coming up ways to maximize it is the researchers next task, which they promise to report on within 2015.

DrQuine
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Re: Two Electrons per Photon ... long term results
DrQuine   2/3/2015 4:29:05 PM
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Doubling output per solar cell (and reducing heat load) sounds like a wonderful accomplishment for an applied coating. These multiplier effects are obviously much more valuable than the incremental increases in output that tweaking of the technology might provide. That said, for how long does this coating work? At what point do pollution, environment abrasion, hazing of the surface, wear and tear convert this miracle layer into a light barrier that reduces solar cell productivity?

R_Colin_Johnson
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Re: Life of the material
R_Colin_Johnson   1/25/2015 2:47:02 PM
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Sanjib.A: What is the lifetime of commercial PV cells
They all say 25 years, but most the best warranty available--SunPower--states in the fine print that its guarantee is that you will only loose --.4% a year in output current, except the first year where you loose 8% and my the end of the warranty you loose 35% by year 25. Most of the others don't give such detailed specs and only warantee for 10 years.

Sanjib.A
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Re: Life of the material
Sanjib.A   1/24/2015 10:30:02 PM
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Okay. What is the life of the commercially available PV cells at present? 10-15 years?

R_Colin_Johnson
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Re: Life of the material
R_Colin_Johnson   1/24/2015 12:27:48 PM
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Sanjib.A: The lifetime of the materiall is one of the hurdles that need to be cleared before commercialization. The researcher's plan is to match its lifetime to that of the underlying solar cell before commercialization.

Sanjib.A
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Life of the material
Sanjib.A   1/24/2015 6:56:49 AM
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"...But Sfeir claims their material is almost as good, and more importantly, easier to apply onto existing solar cells."
It might be early to ask this question: What would be the life of this material once applied or how requently this coating needs to be applied to gain efficiency out of the existing solar cells?

R_Colin_Johnson
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Two Electrons per Photon
R_Colin_Johnson   1/22/2015 3:02:22 PM
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Using this revolutionary print or paint-on polymer not only doubles the number of electrons prouced but increases the efficiency of any solar cell. Right now its boasting 44% efficiency that rivals the efficiency of expensive multi-junction cells made from III-V materials like gallium arsenide (GaAs) and they havn't even started optimizing yet. Solar is looking very bright for the future.

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