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Solar Cell

A team of researchers from the University of Notre Dame in Indiana is reporting the creation of a "solar paint" that could mark an important milestone on the road to widespread implementation of renewable energy technology. Although the new material is still a long way off the conversion efficiencies of commercial silicon solar cells, the researchers say it is cheap to make and can be produced in large quantities. Read More
Radio waves are a type of electromagnetic energy, and when they’re picked up by traditional metallic antennas, the electrons that are generated can be converted into an electrical current. Given that optical waves are also a type of electromagnetic energy, a team of scientists from Tel Aviv University wondered if these could also be converted into electricity, via an antenna. It turns out that they can – if the antenna is very, very short. These “nanoantennas” could replace the silicon semiconductors in special solar panels, which could harvest more energy from a wider spectrum of sunlight than is currently possible. Read More
In June of last year we reported on the success by researchers at Duke University in developing a technique capable of producing copper nanowires at a scale that could make them a potential replacement for rare and expensive indium tin oxide (ITO) in touch screens and solar panels. However, the water-based production process resulted in the copper nanowires clumping, which reduced their transparency and prevented the copper from oxidizing, which decreases their conductivity. The researchers have now solved the clumping problem and say that copper nanowires could be appearing in cheaper touch screens, solar cells and flexible electronics in the next few years. Read More
Advancing solar technology is a trade-off between the efficiency of the cells themselves and the cost of producing and installing them. Quantum dot solar cells, which use nanoscale semiconductors to produce electricity, promise low-cost production and, because they can be sprayed or painted on, big benefits in terms of installation. In the efficiency stakes quantum cells don't score as well as silicon-based or CIGS solar cells, but a new efficiency record for colloidal quantum dot solar cells represents a big step towards narrowing the gap. This breakthrough isn't about the quantum dots though, it's about the wrapping. Read More
There’s no doubt that skylights make for psychologically-nicer buildings, while also reducing the amount of electricity required for daytime artificial lighting. If they let in too much sunlight, however, they can actually increase the amount of electricity needed for air conditioning. California-based EnFocus is attacking the situation from two ends – its Diamond-Power panels diffuse sunlight to keep interior heat down, while also harnessing it to create electricity. Read More
Carbon-based organic photovoltaic cells, which use organic polymers or small molecules as semiconductors, are significantly thinner and cheaper than their inorganic silicon-based counterparts. Unfortunately, they are also much less efficient at converting sunlight into electricity. That could be on its way to changing, however, as an international team of researchers have reportedly boosted the efficiency of organic photovoltaic cells by 20 percent ... with some help from gold nanoparticles. Read More
Although electric vehicles can claim to be greener by producing zero local emissions, the electricity used to charge their batteries needs to come from somewhere. For most people, that somewhere is usually a fossil fuel-powered power station, lessening the green credentials of such vehicles. In an effort to let drivers go the extra green mile, Ford and solar technology company SunPower have teamed up to offer buyers of Ford's upcoming EVs a discounted rooftop solar system to provide enough renewable energy to offset the electricity used to charge the vehicles. Read More
We've been following MIT's progress on creating solar cell-coated paper since 2010, and we're excited to report the current findings of the project. What looks and feels like an ordinary sheet of paper with a fine layer of colored rectangles, is no ordinary piece of paper at all – once connected to a couple of wires, it instantly generates solar electricity. Additionally, the technology is almost as cheap and easy as printing a family snapshot from an inkjet printer. You can even fold it up, slip it in your pocket, then unfold it again for later use. Read More
Solar Ivy was inspired by traditional mansions, where ivy decorates the exterior walls and reflects the organic essence of nature. Created in collaboration with Brooklyn-based parent company SMIT, Solar Ivy is a series of solar cells printed with conductive ink that resemble ivy leaves. The leaves have been designed to be placed on the outside of residential or commercial buildings as a way of utilizing and absorbing solar energy, whilst also doubling as a shade screen. Read More
Traditional solar cell production techniques are usually time consuming and require expensive vacuum systems or toxic chemicals. Depositing chemical compounds such as CIGS on a substrate using vapor phase deposition also wastes most of the expensive material in the process. For the first time, engineers at Oregon State University (OSU) have now developed a process to create "CIGS" solar cells with inkjet printing technology that allows for precise patterning to reduce raw material waste by 90 percent and significantly lower the cost of producing solar cells with promising, yet expensive compounds. Read More