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Photovoltaics - IPHT Jena

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- 53 -<br />

Fig. 7.10: Transmission electron microskopic image of a<br />

nanocrystalline silicion layer prepared from amorphous<br />

silicon by excimer laser irradiation (248 nm wavelength , 25<br />

ns pulse duration)<br />

Fig. 7.11: Seed layer consisiting of larges silicon crystals<br />

prepared by melting amorphous silicon by a cw-laser;<br />

melting time 1 ms (optical micrograph)<br />

7 Types of Solar Cells II: Thin Film Cells F. Falk, <strong>Photovoltaics</strong> WS 2010/11

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