U.S. researchers developed a new type of solar cell technology, solar cells that can grow in the aluminum upright to the nano-column is made of the entire battery is packaged in a transparent polymer gel can be produced inside the can after the Bending the solar cells, cost less than traditional silicon solar cells.
The study of the leadership of the University of California, Electrical Engineering and Computer Science Professor Alijawaysaid that with the traditional silicon and thin-film battery as compared to nano-column technology will enable researchers to use more low-cost and low-quality materials. More importantly, the technology is more suitable for the production of thin aluminum foil that can be curled on the solar panels, thereby reducing the manufacturing costs. Once successful, the production cost will be single crystal silicon solar panels can be as low as 1 / 10.
This solar cell will be uniform through the 500 nanometer high embedding CdTe CdS thin films made of these two materials are often thin-film solar cells use semiconductor. Morrison and his colleagues in the “natural materials” published in the report, such a solar cell will be converted to electrical energy efficiency of up to 6%. Prior to this, dell latitude d510 battery , dell latitude d520 battery scientists also use the design idea of this column, but more expensive method, and photoelectric conversion efficiency of less than 2%.
In traditional solar cells, the silicon to absorb light and generate free electrons, the electron must be trapped in defects or impurities in the material before the arrival of the circuit. This requires the use of very pure, expensive to manufacture high-performance crystalline silicon photovoltaic devices.
Nano-column assumed the duties of silicon, nano-columns around the optical absorption and produce electronics, nano-columns will be delivered to the circuit. This design in two ways to improve efficiency: a close package of the nano-columns between the columns to capture light, the surrounding material to help absorb more light; e to a very short distance across the nano-columns, dell latitude d600 battery , dell latitude d610 battery,not too many opportunities by defects in material hardship. This means that you can use low-quality low-cost materials.
Scientists use a different nano-structure to the production of such solar cells. For example, a chemistry professor at Harvard University, Charles Boer R & D that contains a silicon core and concentric layers of silicon nanowires different; the University of California at Berkeley developed while zinc oxide nanowires with the dye-sensitized solar cells . These nanowire photovoltaic solar cells have achieved conversion efficiency of 4%.
Morrison and his colleagues produced the first nano-column cells using the oxidation of aluminum foil, creating a cyclical distribution of the 200 nm wide holes, these holes as the vertical growth of CdS crystal template. Then, cadmium telluride and the top electrode decorated with copper and gold films. Through a glass plate and pa3383u-1brs,toshiba satellite a70 battery connected, or polymer solution into the top to bend.
Georgia Institute of Technology professor of materials science and engineering, said Zhong-Lin Wang, the nano-materials engineering design and manufacture flexible high-performance flexible solar cell technologies in a variety of soft substrates together, this is an exciting progress. U.S. National Renewable Energy Laboratory study of solar cells is responsible for the physical chemist Popieluszko Arsenault said that this battery with the silicon, cadmium telluride and other flexible materials to compete with thin film solar cells, and its selling point may not be its flexibility, but the cost advantage.
Currently, researchers are exploring the use of the materials to improve conversion efficiency. For example, the top of the copper - gold layer is only 50% of the transparency, if all the light through, and its efficiency can be doubled. Therefore, researchers are planning to use such as indium oxide transparent conductive material. In addition, the use of other semiconductor materials as nano-column and the surrounding materials researchers are also taken into consideration, so that the production process can be suitable for a wider range of semiconductor materials,toshiba satellite a75 battery,toshiba satellite p30 battery,toshiba satellite p35 battery, other material combinations may also increase efficiency, a more important point is cadmium toxicity can be avoided the issue.