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High minority carrier lifetime in phosphorus-gettered multicrystalline silicon

 

作者: Andre´s Cuevas,   Matthew Stocks,   Stephane Armand,   Michael Stuckings,   Andrew Blakers,   Francesca Ferrazza,  

 

期刊: Applied Physics Letters  (AIP Available online 1997)
卷期: Volume 70, issue 8  

页码: 1017-1019

 

ISSN:0003-6951

 

年代: 1997

 

DOI:10.1063/1.118469

 

出版商: AIP

 

数据来源: AIP

 

摘要:

The electronic quality of multicrystalline material produced by directional solidification has been evaluated by means of photoconductance techniques. Very high minority carrier lifetimes, in the vicinity of 200 &mgr;s, have been measured inp-type 1.5 &OHgr; cm material that had received a phosphorus diffusion gettering treatment. The measurements correspond to an effective lifetime averaged over an area of 3 cm2that includes several grain boundaries and reflects the combined bulk, grain boundary and surface recombination mechanisms. The high lifetime (15&mgr;s) also obtained in low resistivity 0.2 &OHgr; cm wafers has allowed the fabrication of solar cells with an open-circuit voltage of 657 mV (AM1.5 G, 100 mW/cm2, 25 °C), probably the highest ever reported for multicrystalline silicon. ©1997 American Institute of Physics.

 

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