Tag Archives: nanocrystals
Everything you know is wrong: lasers are cooling things now
Researchers develop energy saving smart window that filters out heat and / or light
In the heat of summer, either you shut the windows and crank up the AC, or pull down the blinds and stumble around in the gloom. At least, that was the case. A team at the Lawrence Berkeley National Laboratory has developed a new smart window that lets people choose what they want to let into their home, filtering out visible light, near-infra-red light, or both. Using a thin layer of nanocrystals that change state when electricity is passed through, will enable people to save on home energy bills by keeping the bulk of the Sun's heat out of the home without sacrificing the natural light. Now all we have to do is hook this up with one of Samsung's touchscreen windows and we'll never have to leave home again.
Via: PhysOrg
USC develops printable liquid solar cells for flexible, low-cost panels
Solar cells are becoming more viable sources of energy -- and as they become more efficient, they're only getting smaller and cheaper to produce. Liquid nanocrystal cells are traditionally inefficient at converting sunlight into electricity, but by adding a synthetic ligand to help transmit currents, researchers at USC have improved their effectiveness. The advantage of these liquid solar cells? They're cheaper than single-crystal silicon wafer solutions, and they're also a shockingly minuscule four nanometers in size, meaning more than 250 billion could fit on the head of a pin. Moreover, they can be printed onto surfaces -- even plastic -- without melting. Ultimately, the goal of this research is to pave the way for ultra-flexible solar panels. However, the scientists are still experimenting with materials for constructing the nanocrystals, since the semiconductor cadmium selenide they've used thus far is too toxic for commercial use.
USC develops printable liquid solar cells for flexible, low-cost panels originally appeared on Engadget on Fri, 27 Apr 2012 13:21:00 EDT. Please see our terms for use of feeds.
Permalink | | Email this | Comments