期刊
NANOTECHNOLOGY
卷 22, 期 44, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/0957-4484/22/44/445401
关键词
-
资金
- Department of Energy (Illuminex, Phase II STTR) [DE-FG36-08GO18010, DE-FG02-07ER86313]
- National Nanotechnology Infrastructure Network
Single nanowire radial junction solar cell devices were fabricated using Si nanowires synthesized by Al-catalyzed vapor-liquid-solid growth of the p(+) core (Al auto-doping) and thin film deposition of the n(+)-shell at temperatures below 650 degrees C. Short circuit current densities of similar to 11.7 mA cm(-2) were measured under 1-sun AM1.5G illumination, showing enhanced optical absorption. The power conversion efficiencies were limited to < 1% by the low open circuit voltage and fill factor of the devices, which was attributed to junction shunt leakage promoted by the high p(+)/n(+) doping. This demonstration of a radial junction device represents an important advance in the use of Al-catalyzed Si nanowire growth for low cost photovoltaics.
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