solar cells tagged posts

Researchers explained that this air cooling system based on clean energy that is supplied with water and has photovoltaic modules that can operate for 12 continuous hours. Credit: Image courtesy of Investigación y Desarrollo

GeckoLogic firm developed an evaporative cooler that has an integrated photovoltaic system isolated from the electrical network, which enables to refresh an area of ​​~200 sq meters. The advantage of this product is that it works exclusively with sunlight and water, which makes it self-sustaining. It also entails the advantage of eliminating the need to connect it to a conventional power source. In addition to only using clean energy it reduces the environmental impact caused by the emission of greenhouse gases that traditional systems cause.

This air cooling syst...

—promising 3rd-gen solar cells utilizing a nanocrystal ink deposition that could make traditional expensive silicon-based solar panels a thing of the past. While progress on organic thin-film photovoltaics is rapidly growing, inorganic devices still hold the record for highest efficiencies which is in part due to their broad spectral absorption and excellent electronic properties.

A major disadvantage compared to organics, however, is that inorganic materials are difficult to deposit from solution. To overcome this, Townsend synthesized materials on the nanoscale. Inorganic nanocrystals encased in an organic ligand shell are soluble in organic solvents and can be deposited from solution (i.e...

(a) Coupling efficiency (ηC) versus source angle (φ) for a planar solar panel. The panel projected area decreases with the cosφ. (b) A kirigami tracking structure that, upon stretching, simultaneously changes the angle of the elements comprising the sheet. By incorporating thin-film solar cells into this structure, it may be used as a low-profile alternative to conventional single-axis solar tracking. (c) The direction of feature tilt (that is, clockwise or counter-clockwise with respect to the original plane) is controlled by lifting or lowering one end of the sheet (step 1) before the straining process (step 2).

Solar cells capture up to 40% more energy when they can track the sun, but conventional, motorized trackers are too heavy and bulky for pitched rooftops and vehicle surfaces...

Researchers are testing an array of new combinations that may vastly expand the options available to create faster, smaller, more efficient energy storage, advanced electronics and wear-resistant materials.

They created 2 entirely new, layered 2D materials using molybdenum, titanium and carbon. “By ‘sandwiching’ one or two atomic layers of a transition metal like titanium, between monoatomic layers of another metal, such as molybdenum, with carbon atoms holding them together, we discovered that a stable material can be produced,” Anasori said. “It was impossible to produce a 2D material having just 3 or 4 molybdenum layers in such structures, but because we added the extra layer of titanium as a connector, we were able to synthesize them.”

It represents a new way of combining element...