The most expensive, carefully designed, and complicated solar panels in the world operate at about 40% efficiency. That means that, for every bit of sunlight that hits the panel, only 40% of it is turned into electricity.
Scientists think that this is just about as good as silicon panels can do and are now looking at ways to make it cheaper, instead of making them more efficient. But suddenly, from nowhere, comes Steven Novack of the Idaho National Laboratories with an inexpensive, foldable solar panel that may turn out to be up to 80% efficient.
The trick is nanotechnology. The surface of the material is printed with miniscule nano-antennae that capture infra-red radiation, the kind that the sun puts out in abundance, and is even available at night. Television antennas absorbe large wavelength energy, so in order to absorb ultra-small wavelength energy (photons) they had to create ultra-small antennas.
The material is fairly simple to create, and scientists are confidient that it would scale easily out of the laboratory. But there is a bit of a hitch: There's currently no way to capture the energy being created.
So while there are electrons pouring out of the nano-antennas when exposed to the sun, there is no way to capture those electrons. But don't worry, those geniuses in Idaho are working on that already. By putting a tiny capacitor, or AC/DC converter in the center of every tiny tiny antenna, they think they could make this new kind of solar panel export all that energy it's created without raising the price, or lowering the efficiency too much.
Source: Idaho National Labs via Groovy Green

written by Reinhold Ziegler, January 31, 2008
Good Work!
written by Ken Roberts, January 31, 2008
Efficiency of a device includes the efficiency at which the energy is captured and transformed into electrical current. Without this part of the process, you cannot compare such panels to traditional silicon panels. If capturing the energy turns out to be a lossy endeavor, you may end up with a system that is even less efficient than the 40% from traditional silicon.
Cool concept though.
written by William, January 31, 2008
written by SamW, January 31, 2008
written by Angelie, January 31, 2008
written by Frannyy, January 31, 2008
Scientists have been doing nanotechnology for decades, even centuries; it's called chemistry.
You'll be surprised to know that shampoos and even deodorants, the face-packs in cosmetics, paint etc all work on "nanotechnology".
On the point of their use in pursuit of environmental protection I can point to the example where colloids are used to reduce the rate of evaporation from water reservoirs. Even the standard solar panels are made using nanotechnology. The list is actually impossibly long.
written by Troy, January 31, 2008
written by Shayne, January 31, 2008
This is a bad approach - using technology at this high level to find ways of mitigating our energy and climate problems is missing the point - using nanotechnology for solar is complicated, expensive and unrealistic in our economy. We need to scale solar implementation up and it's cost down, and technology like this simply aids the coal and oil companies. Using holistic approaches to our scientific exploration of solar like new cogeneration systems and resource effective technology like thermal capturing systems is the wave of the future, if we want a future.
written by Djarada, January 31, 2008
written by colecoman1982, January 31, 2008
My understanding was that it wasn't the antenna that researchers were having a problems developing, but a diode that could respond fast enough for, high frequency, visible light waves. As far as I know, this is a non-story.
written by Tony, January 31, 2008
Good luck to them though it's an interesting development.
written by gliem, January 31, 2008
http://sattlerclothing.com/blog/2007/10/30/green-ipod-charger/
written by anti-bot, February 01, 2008
written by Steve, February 01, 2008
Despite this, energy is inversely proportional to wavelength so the larger the wavelength, the lower the energy of the photon. IR photons are much lower energy than visible light.
To be 80% efficient solar cells, it MUST capture, convert, and be able to produce power form more than just the IR spectrum of AM1.5. I have a feeling this device can report a 80% internal efficiency (it converts 80% of the light it is theoretically able to convert), but if it can't produce power, it has 0% efficiency.
As far as the concerns over nanotechnology, it is everywhere, and is really just a catch-all phrase for advancing technology these days. It's a phrase that is on par with "government systems" or "manufacturing". You can't really say "government systems" are inherently good or bad, you have to look at the specific one you're talking about.
written by dandermouse, February 01, 2008
written by Brad, February 01, 2008
written by doctorscn, February 01, 2008
infrared radiation is popularly known as "heat" or sometimes "heat radiation", since many people attribute all radiant heating to infrared light and/or to all infrared radiation to being a result of heating. This is a widespread misconception, since light and electromagnetic waves of any frequency will heat surfaces that absorb them. Infrared light from the Sun only accounts for 49%[8] of the heating of the Earth, the rest being caused by visible light that is absorbed then re-radiated at longer wavelengths. Visible light or ultraviolet-emitting lasers can char paper and incandescently hot objects emit visible radiation. It is true that objects at room temperature will emit radiation mostly concentrated in the 8 to 12 micrometer band, but this is not distinct from the emission of visible light by incandescent objects and ultraviolet by even hotter objects (see black body and Wien's displacement law).[9]
Heat is energy in transient form that flows due to temperature difference. Unlike heat transmitted by thermal conduction or thermal convection, radiation can propagate through a vacuum.
The concept of emissivity is important in understanding the infrared emissions of objects. This is a property of a surface which describes how its thermal emissions deviate from the ideal of a black body. To further explain, two objects at the same physical temperature will not 'appear' the same temperature in an infrared image if they have differing emissivities.
written by Morgan Sam, February 01, 2008
written by Cale, February 01, 2008
written by citizenkay, February 01, 2008
written by Dustin, February 01, 2008
written by CC, February 01, 2008
written by Nick, February 01, 2008
written by Chris, February 01, 2008
written by Brian, February 01, 2008
written by salsa, February 01, 2008
Just like a glowing hot body will heat you-- the sun during the day, for instance-- the blackness of space is so so so cold, IR energy from the earth radiates out to space, cooling the earth.
This temperature differential between a cooled object and the ambient temperature can be used to generate electricity.
written by Bob, February 01, 2008
There is no claim of converting 80% of solar radiation to electrical energy. The claim is that they can absorb 80%. I can absorb 80% with a black wool coat, but I can't convert it to electrical power. Competing solar cells convert electricity in the range of 5% to 20% (commercial), and 40% in very controlled lab experiments. Every increment of efficiency (depending on cost, every fraction of a percent is worth a lot) is highly dependent on the technology of conversion. There is no cause to celebrate 80% until a way to convert the energy is developed. OK, they are further along than my fur coat, but without a strategy to make it happen.
written by epic, February 01, 2008
written by Travis Miller, February 01, 2008
written by Travis, February 01, 2008
written by indatube, February 02, 2008
In PhotoVoltaic or Charge integrating light detectors, the amount of electrical energy is related to the amount of photons converted to charges = Quantum Efficiency.
written by Brilliant, February 02, 2008
OMG what is it with you retarded, undereducated, armchair physicists?
written by pubed, February 02, 2008
written by ghh, February 02, 2008
written by Jay, February 02, 2008
written by Moe, February 02, 2008
80% efficiency are realistic, if the problems with different frequencies and collecting the power could be solved
written by Thom Bouis, CSP, February 02, 2008
written by Gabe O'Leary, February 02, 2008
The atmosphere reflects more ultraviolet light than infrared, and infrared's wavelength is shorter than micro and radio waves. In addition, at night time there is lots of infrared light being reflected off the moon from the sun. Ever heard of night vision? That is the principle that night vision relies upon, not thermal radiation from the earth. In fact heat is a small portion of the infrared spectrum, and I'm sure it's not what these panels are capturing.
written by bennythewop, February 02, 2008
Material that absorbs at ANY wavelength could theoretically be used to generate electricity, so long as a material could be found that responds accordingly. What's innovative here is that the material absorbs light in the infrared and thus can access blackbody radiation at night.
Chill out, I'm sure they're working mighty hard to generate large scale currents. One step at a time.
written by Temporalmaniac, February 02, 2008
Not true, just because u cant see it, does not means it lesser then when u can see. In fact, Earth is heated by the IR ray that the Sun emits. If the atmosphere is good at reflecting IR light, Earth will be a cold place. Our atmosphere trap Heat energy well, not reflect them well. -.-
Second, IR is a long-wavelength form of radiation, not an ultra-short one as the article purports. It's longer than radio and microwave, sure, but it's longer than visible light.
OMG? IR is right after RED dude... When did IR turn longer then radio and microwave? This are stuff even Asian kids knew when there are 9? Plz go read the EM chart.
Third, how can it be a solar panel if it works at night? If it truly collects IR, then it's probably collecting it from the earth's thermal radiation or the atmospheric reflexions thereof.
There are still some SUNLIGHT reflected to earth at night. The Moon is a great example. But ok, i believe if it still work, it would most likely NOT to be solar energy. But, why cant it work at night? The only thing skeptical about this project is, how can it be 80% when u cant convert it to any other energy? To me, its the same as saying, my new invention convert solar energy at 100%. My secert? A Black paper! It converts visible light energy at 100%. Just that i have a problem now, it cant output to electricity or any other form of energy yet.
written by Temporalmaniac, February 02, 2008
Oops it spelt Correcting. try to get the facts right next time. Its bad and irratiting. Its like crying "Iraq have WMD" when they have none.
written by Steve, February 03, 2008
I don't know about everyone else, but Nano-technology should be taken a lot more seriously. I mean, what if the nanobots become self-aware, and start reproducing? Nobody ever considers the tragedies these inventions could cause... Don't come crying to me when you get infected, ass holes.
Good for a morning laugh, thanks people.
written by johan, February 05, 2008
But regardless, this hyped and buzz-word filled article is straight off their own press! Don't believe what a salesman tells you.
written by Bill Brasky, February 06, 2008
written by Morgan Freeman, February 06, 2008
/me comes walking out in a new line of Victoriath Thecret Lingerie, spasticly convulsing and in a state of ectasy, due to the electricity flowing through his inner child. OH LORD IN HEAVEN, WE HAVE THE TECHNOLOGY TO FREE OURSELVES FRO*dead*
written by NanooGeek, February 06, 2008
written by Eon, February 07, 2008
If this could truly produce usable energy from a room temperature environment then this would be man's greatest invention yet.
written by Jerome, February 07, 2008
written by Brian, February 10, 2008
They are not converting the IR energy into heat like a black object would, they are converting it directly into energy electricity.
Anyone who is confused about how this technology works, the original article does a much better job explaining.
written by newbie, February 11, 2008
The original source article by the Idaho National Laboratoryexplains that the reason for the difficulty in using energy captured by the nano antennas is AC current switching at 10 terahertz. It need to be dropped to 60 hertz or to DC.
Any technology that involves printing on plastic has to be way cheaper than poly silicon
http://www.inl.gov/featurestories/2007-12-17.shtml
written by Jaime Soto Figueroa, February 12, 2008
Jaime Soto Figueroa
written by Birdman, February 13, 2008
written by Silent Pickle, March 07, 2008
written by solar energy, March 21, 2008
written by boxa888, April 07, 2008
written by Methusullah, April 07, 2008
written by blank, April 28, 2008
Just one question, though:
How much energy is used to makethis solar panel?
written by cameron belt, May 24, 2008
written by brian, May 29, 2008
and other forms of creating hydrogen are using fosal fuels and therefor creating carbon emisions which is what the world goverments and enviromentalists are trying to reduce so I Hope this guy can work out a way to use this energy sourse / that way we maybe able to become fosil fuel free
written by yop, June 03, 2008
it can be the begining of the end....half century from now....I don't know but yet, who does?
written by Jim, June 09, 2008
written by jason, June 17, 2008
written by jay draiman, June 22, 2008
I think if corporate America is serious about energy conservation; it must start with people at the top and roll down from there to the rest of the executives and employees.
In order to accomplish such an important mission as energy conservation every executive and employee has to believe that what he is doing is the right thing.
They must practice the same attitude at home and implement energy conservation at home. This attitude will carry on to the workplace.
First thing that must be done is, each employee should be asked what has he/she done in their own lives to conserve energy, and than if the answer is positive advance the initiative from there, if not an education process must be implemented to drive the process home once this process has been achieved, it will be easier to get everyone to participate in energy conservation.
The motive and behavior has to come from within each individual person – it must become part of a routine practice – it must become a way of life – reducing waste in any form.
In today’s rising cost of energy – conservation must become a national theme.
Jay Draiman, Energy Analyst
written by solarup, June 27, 2008
There is more detail provided, which some will find useful.
Interestingly, Idaho National Labs is under the Department of Energy. For the sceptics out there, it's unlikely that a government lab would be chasing some pie-in-the-sky idea. I hope they make the breakthroughs they're looking for!
If we can make computer chips half as small every 18 months for the last several decades (Moore's Law), surely we can crack the solar problem and, in time, develop highly efficient solar systems.
Surely we can also create batteries that are significantly more efficient and powerful than today's batteries. Soon, we'll all be driving plug-in cars, powered by our ultra-efficient solar panels.
written by scott williams, July 04, 2008
written by Alex, July 15, 2008
I intend to change the power supply in my home, so I am interested in this matter.
Which type is more efficient (polychristaline, amorphous, etc.) and why. It can be affected by weather condition (by procent)? If yes, how can be avoided?
Should I install an "stand alone" or "on grid"?
Can anyone advise about the best supplier?
Thanks
written by dquest, July 25, 2008
thnks
written by Dx, July 28, 2008
pls, my question is a bit diff. is this statement true? "100watt solar panel translates to 100watt of power fed into the batteries in every hr"
Not true,for 100watt solar panel 100w is maximum power it can provide under ideal sunlight conditions.
under real life conditions it will make about 40-50% of rated power in average.
-------------------------
So these clowns made small antennas, and now the only very small problem is to make several trillions of "super mega ultra" high frequency diodes (one for every antenna) that can rectify at least few THz frequencies. just about few times more than fastest ones today.
even if this miracle will happen and someone invents a way to manufacture such diodes at moderate prices, efficiency will be not very good, because diodes have quite significant voltage drop.
written by Mankottil, August 06, 2008
written by Homercles of Edinburgh, August 12, 2008
written by BigD, August 13, 2008
written by arian, August 24, 2008
We are Iranian students. We have met your website. It was excellent. congragulations. After having met, we became
interested in the sunny lamps. We have plan to search about them. Would you mind sending us some information about its making and using?
With the best regards
F.Dehghan , R.Arian and L.Khosravani
written by Deet, August 29, 2008
Not taking anything away from these guys, I suspect many ideas have been mentioned in passing in some mag or other.
written by shirley, September 03, 2008
written by sagar, October 15, 2008
written by Ray The Money Man, October 31, 2008
Great post!
written by Rob, November 06, 2008
written by Har!, November 09, 2008
written by Luke, December 07, 2008
The great thing about IR is that it travels easily through most solid objects, and so the panels would not necessarily have to face the light or heat source. Imagine a roof during the day with heat sunlight striking it. The IR hits the roof and converts to heat, conducting through the roof. When it hits the air space below, IR is then emitted into the space. About 93% of all the heat entering a home through the roof will be IR in that space. A single conductor on the roof would both collect the IR during the day from the sun and the heat from the home that would typically be wasted at night.
This revolutionizes insulation. Since even the best insulation envelope cannot hold 100% of the heat indefinantely (most just delay the heat loss), this allows any heat that does escape to be converted into usable energy, and this is energy that we would not have at all with solar pannels.
written by david, February 14, 2009
www.dmsolar.com
written by Rob, February 22, 2009
In this website send me the link to get one of these and how much?
written by Nicholas Dykema, March 21, 2009
written by watever, April 16, 2009
The size of one of these solar panels?
The watts per meter squared they produce?
The time they have before their efficiency goes down?
thank you
written by dirk, April 20, 2009
written by Joe , April 08, 2009
I Like Men :)
hEY!!
So do I!
NOT!!
written by Van Covington, July 02, 2009
| < Prev | Next > |
|---|
Recent Comment
Share
:-
First off, I'm fairly certain that most of the Sun's rays hitting the earth come in visible light, as our atmosphere is rather adept at reflecting IR.
Second, IR is a long-wavelength form of radiation, not an ultra-short one as the article purports. It's longer than radio and microwave, sure, but it's longer than visible light.
Third, how can it be a solar panel if it works at night? If it truly collects IR, then it's probably collecting it from the earth's thermal radiation or the atmospheric reflexions thereof.
These are the issues I and my scientific education have with this article. If anyone more knowledgeable can shed some light on this, that would be great.