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| Nanotechnology-based, hybrid nanocrystal inorganic thin-film photovoltaics combine the best features of solar cells constructed from bulk thin-film silicon and from polymer solar cells. When compared to polymer-based solar cells, bulk silicon cells have always offered higher efficiencies and greater stability when exposed to sunlight. But bulk silicon photovoltaics have also required costly semiconductor manufacturing techniques more useful in manufacturing computer chips than acres of solar cells. The colloidal nanocrystal (NC) cell technology offered here allows the production of air-stable solar cells processed using solution phase methods. Fabrication is as easy as that for organic polymer photovoltaics, but produces a more efficient, more reliable, and more stable cell. The technology simplifies fabrication under ambient conditions, thus expanding the range of flexible or conformal substrates which can be used. By using mixed blends of semiconducting nanocrystals in forms such as nanowires, nanorods, quantum dots, and so forth in a cell, and by varying their parameters, the cell’s response to irradiation can be precisely tuned to the wavelengths that favor the intended application conditions, thus enhancing a cell’s potential output even more. With these advances, inorganic, thin-film solar cells can be manufactured under ambient conditions as simply as can low-efficiency polymer cells, thus offering efficiency, flexibility, low-cost manufacturing, and long-term stability. The technology suite offers technical know-how and possibly production of nanotech materials, along with over 150 fundamental and elaborative patents and patent applications that derive from institutions such as Lawrence-Livermore, Harvard, MIT, UC Berkeley, Columbia, Hebrew University and others.Solar energy long looked potential solution ever increasing needs planets population Increasing costs mining fossil fuels increased concerns greenhouse emissions instabilities regions large reserves furthered interest exploiting alternative strategies solar sources |
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