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SEMINAR NOTICE |
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【10/01/2006】 |
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► 2006/10/26 Frontier Energy Science and Technology / Dr. David S. Ginley |
【10/03/2006】 |
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► 2006/10/27 Seminar / Dr. David S. Ginley |
【10/15/2006】 |
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Group Manager, Process Technology and Advanced Concepts National Renewable Energy Laboratory Dr. David S. Ginley – NREL Dr. David S. Ginley is currently a Group Manager in Process Technology and Advanced Concepts at the National Renewable Energy Laboratory, leading activities in the applications of nanotechnology/nanomaterials, organic electronics, transition metal oxides (ferroelectric materials, rechargeable Li batteries, fuel cells, and transparent conductors) and ink jet printing. Current work focuses on the development and basic science of very high quality materials (transparent conducting oxides, ferroelectric materials, organic materials and nano-materials) and the development of next generation process technology for materials and device development ( combinatorial methods, direct write materials, composite materials and non-vacuum processing). Dr. Ginley graduated from the Colorado School of Mines with a B.S. degree in Mineral Engineering Chemistry and received a Ph.D. from MIT in inorganic chemistry. Ginley is involved in numerous professional societies, including Electrochemical Society (Fellow), the Materials Research Society (BOD), and IEEE. He has published more than 320 papers, received 27 patents, and been honored with a Department of Energy Award for Sustained Research in Superconducting Materials, R&D 100 awards for novel chemical etches, for nanoparticle technology, for ferroelectric frequency agile electronics, and for alumina based nanofibers. He has also received two FLC technology transfer awards. He is also an adjunct Professor of Physics at CU Boulder and of Materials Science at the Colorado School of Mines. Seminar abstract: Novel Processing Approaches to 2nd and 3rd Generation Solar Cells The increasing drive to achieve higher performance and lower cost in solar photovoltaics is leading to the examination of new process approaches tailored to next generation devices. We will present results on two of these printed electronic materials and next generation nano-structured oxides as acceptors or organic photovoltaic cells. Key goals for many of these approaches are to avoid vacuum, have green processing, and use materials efficiently. We will discuss work on three areas that meet these criteria: nanostructured ZnO acceptors for organic photovoltaic cells, inkjet metallizations for solar cell contacts and the use of liquid precursors for the development of direct write CuIn(Ga)Se2 solar cells. In the first case we have demonstrated that solution grown ZnO nanorods are an effective acceptor in excitonic solar cells. We will discuss nano-rod growth, polymer intercalation with and without added fullerene acceptors and the fabrication of devices up to 3% efficient. In the second case we will present the use of metal organic based inks that decompose at low temperatures to form high quality metallizations suitable for high efficiency Si solar cells. Modern inkjet technology can produce high resolution lines (35 µm) with great precision in a non-contact, low-cost materials efficient process. Finally we will discuss recent results where novel metal organic precursors have been synthesized that can readily be decomposed to produce CuInSe2 directly. This approach offers perhaps one of the most manufacturable routes into this potentially important solar cell material. All of these approaches together begin to build a tool kit for the processing of opto-electronic materials and devices without vacuum base processes and in an energy efficient and green way. We would like to acknowledge the support of the Department of Energy National Center for Photovoltaics, the National Renewable Energy Laboratory Laboratory Directed Research and Development Fund and XCEL Energy Corp.
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