NDLI: Effect of encapsulant on cell-to-module efficiency loss in PV modules with ion implant and POCl cells

Content Provider	IEEE Xplore Digital Library
Author	Biao Li Segui, J.A. Fountain, C.J. Dube, C.E. Tsefrekas, B.
Copyright Year	2012
Description	Author affiliation: Fraunhofer Center for Sustainable Energy Systems CSE, 25 First Street, Cambridge, MA 02141, USA (Biao Li; Segui, J.A.; Fountain, C.J.) \|\| Applied Materials, Varian Semiconductor Equipment, 35 Dory Road, Gloucester, MA 01930, USA (Dube, C.E.; Tsefrekas, B.)
Abstract	This paper presents work assessing the cell-to-module (CTM) efficiency loss of ion implant (IMP) cells in comparison with POCl (POCl) diffusion cells, using both standard EVA and silicone encapsulants. In order to reduce uncertainty in CTM loss analysis, single cell test modules with different encapsulants were fabricated using an established lamination process. 10 test modules were prepared for each cell and encapsulant category to ensure statistical accuracy. The I–V characteristics were measured on bare cells, tabbed cells, and modules using class AAA solar simulators. Specifically, a shading mask was applied to the front of modules during I–V measurement to mitigate the backsheet effect. Moreover, the statistical significance of the measured CTM loss was determined. The analysis showed that the effect of encapsulant (silicone versus EVA) on relative short-circuit current (I) loss was statistically significant, whereas the effect of cell type (IMP versus POCl) was not significant at the 95% confidence level. In addition, the CTM loss in absolute efficiency for modules with IMP cells is about 0.1% higher than those with POCl cells. The experimental results agree well with optical model predictions.
Starting Page	002336
Ending Page	002341
File Size	1910761
Page Count	6
File Format	PDF
ISBN	9781467300643
ISSN	01608371
e-ISBN	9781467300667
DOI	10.1109/PVSC.2012.6318067
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-06-03
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	FCC Indexes statistical significance cell-to-module loss encapsulant ethylene vinyl acetate (EVA) ion implant cells phosphorus oxychloride (POCl3) diffusion cells silicone
Content Type	Text
Resource Type	Article
Subject	Industrial and Manufacturing Engineering Control and Systems Engineering Electrical and Electronic Engineering

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