University of Delaware newly developed ultra-high efficiency silicon solar cells, in a standard terrestrial sunlight conditions, the solar energy conversion efficiency reached a record 42.8% higher than in other types of solar cells by about 30% is currently the best silicon solar cells 2 times. This technology will produce power to change the world way.
The Ilanbatine University of Delaware, said the former high-efficiency solar cells, its focus on devices requires a complex set of optical tracking system, including a 30.5 centimeters thick, the desktop size of the focus lens. And they developed a new type of battery used transverse optical focusing system, the system will be the incident light is divided into high, medium and low three different energy beams were irradiated to different photosensitive materials, these light-sensitive materials, the absorption spectra of the total then cover the entire solar spectrum. More importantly, the fact that the focus system includes a static wide acceptance angle optical system that can capture a lot of light, without the need for complicated tracking devices, the whole system less than 1 cm thick. This new type of solar cell thin and features no moving parts means that it can easily be applied to notebook computers and other portable devices.
The “super-efficient solar cells (VHESC)” research project by the U.S. Defense Advanced Research Projects Agency (DARPA) funding, aimed at the development of practical portable solar battery charger. DuPont has formed a joint University of Delaware VHESC Development Group, plans to promote the product as the battery from the laboratory to industrial manufacturing prototype stage. DARPA will continue to fund the next phase of development, and conversion rate target was set at 50%. As the U.S. soldiers of military equipment to carry the weight of the battery alone accounts for 20%, the U.S. military for this battery of particular interest. DARPA hopes the study will greatly reduce the battery logistics support line, in reducing the battery weight while providing more power, thus improving the power on the battlefield are heavily dependent on technology and equipment flexibility, tolerance and effectiveness.
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