A solar cell (also called a photovoltaic cell) is an electrical device that converts the energy of light directly into electricity by the photovoltaic effect. It is a form of photoelectric cell (in that its electrical characteristicsâe.g. current, voltage, or resistanceâvary when light is incident upon it) which, when exposed to light, can generate and support an electric current without being attached to any external voltage source.
For some years now, scientists have been exploring the use of quantum dots as the basis for a novel type of solar cell. The advantages over conventional solar photovoltaic cells are numerous, minus one aspect: efficiency, which is actually the most important one. A new technique developed at MIT labs that uses quantum dots in [...]
One of the biggest hurdles the solar energy industry currently faces is efficiently transforming the incoming energy from the sun’s rays. Vast fields of solar panels are a common sight, but truth of the matter is their energy output is quite low, which puts them at a technical and economic disadvantage from other renewable solutions [...]
We’ve never shun away from praising the almost miraculous properties of graphene, the wonder material set to become even more paradigm shifting than plastic. Graphene has found been found to have the potential to revolutionize a myriad of scientific fields, from genetics, to electronics, to nanotech, to security, to just about anything you could think of. The energy [...]
While we all have to recognize the huge potential that solar energy brings us, we also have to say that sadly, so far, we’re not very effective at harnessing this energy. The best modern silicon and indium-tin-oxide-based solar cells are approaching the theoretical limit of 33.7% efficiency. A big breakthrough The team led by Stephen [...]
The new architecture, depicted in the picture below can exceed a 40 percent conversion efficiency, and even when irradiated from the side it generates solar conversion efficiencies that rival, and may eventually surpass, even the most ultra-efficient photovolataics. The new cell was developed by researchers working on the David Ben-Gurion National Solar Research Center, and [...]
Scientists at Stanford University have successfully devised the world’s first solar cell made entirely out of carbon. This alternative to typical silicon solar panels is not only a lot cheaper to produce, but also a lot less simpler to use. Such carbon cells can be coated on any surface and turn it into a solar [...]
In a fantastic breakthrough in solar energy, scientists at the U.S. Department of Energy’s National Renewable Energy Laboratory (NREL) have devised solar cells using nanotechnology which have had a recorded efficiency as high as 18.2%. Now, this alone is far from being deemed impressive, considering the current most efficient solar cells are 35% plus. What [...]
One of the cutting edge technologies currently used today in manufacturing allows for printing materials directly onto a surface to create electrically functioning devices which are very thin and flexible. The best example of such an application are organic light-emitting diodes (OLEDs), widely used as displays for most new generation smartphones commercially available now. The [...]
Trees employ a fractal structure of branches to twigs to spread a wide array of leaves for maximized sunlight collection. Similarly, chemists at University of California, Davis developed a set of microscopic “trees” made out of silver, which the researchers claim might well form the basis for a new range of highly efficient solar cells [...]
Researchers have successfully managed to create a “solar paint” made out of quantum dots, which exhibits similar properties to multifilm solar cell architectures. The later are sophisticated, expensive and require a lot of time to deploy; the paint can be easily applied to basically any surface, like a house’s roof, and prepare it to easily generate [...]
Wed, Mar 27, 2013
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