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.
点击下载:
PDF
(62KB)
返 回