NDLI: High efficiency n-silicon solar cells using rear junction structures

Content Provider	IEEE Xplore Digital Library
Author	Dai, X.M. Green, M.A. Wenham, S.R.
Copyright Year	1993
Description	Author affiliation: Centre for Photovoltaic Devices & Syst., New South Wales Univ., Kensington, NSW, Australia (Dai, X.M.; Green, M.A.; Wenham, S.R.)
Abstract	This paper reports two near junction structures for n-silicon solar cells. They are respectively rear totally- (PERT) and rear locally-diffused (PERL) junction cells. The electrical contacts are deployed on both sides of the cells with n- on the front and p- on the rear, most surface area being passivated by silicon dioxide. A shunt problem in the rear PERL structure, resulting in a low fill factor, has been identified and solved by using the different contact characteristics of PtSi/p-silicon and PtSi/n-silicon. Open-circuit voltages up to 694 mV are obtained for the rear PERT structure, and 696 mV for the PERL. Both of the rear junction n-silicon solar cells have achieved high energy conversion efficiencies of 21.9% and 21.2% respectively. The results were measured at one Sun (0.100 W/cm/sup 2/), global AM 1.5 spectrum, 25/spl deg/C by Sandia National Laboratories. Some front junction n-silicon cells have also been fabricated to compare with the rear junction cells. The measured results have shown that the open-circuit voltage for the front junction cells is about 34 mV lower than the rear junction cells. The reason for this is discussed.
Starting Page	153
Ending Page	156
File Size	398876
Page Count	4
File Format	PDF
ISBN	0780312201
DOI	10.1109/PVSC.1993.347062
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1993-05-10
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Photovoltaic cells Boron Voltage Silicon Energy conversion Laboratories Current density P-n junctions Photovoltaic systems Solar power generation
Content Type	Text
Resource Type	Article

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