NDLI: Investigation of Screen-Printed Rear Contacts for Aluminum Local Back Surface Field Silicon Wafer Solar Cells

Content Provider	IEEE Xplore Digital Library
Author	Jia Chen Tey, Z.H.J. Zhe Ren Du Fen Lin Hoex, B. Aberle, A.G.
Copyright Year	2011
Abstract	Silicon wafer solar cells with an aluminum local back surface field (Al-LBSF) are currently intensively investigated for industrial application. One of the main challenges for the Al-LBSF solar cell is the formation of the local Al rear contacts. In our previous work, we have introduced the relative photoluminescence (PL) intensity method to study the Al-Si local contact formation. In this study, we apply this method to experimentally investigate the impact of the geometry (lines or points) of the rear contacts and compare the experimental results with theoretical results that are obtained using Fischer's model. We find that the PL intensity strongly correlates with the p⁺ layer thickness and inversely correlates with the void density at the rear surface. Al-LBSF solar cells with different rear contact geometries are fabricated. High Rs was found, especially for those cells with narrower line widths and a large number of voids.
Starting Page	690
Ending Page	696
Page Count	7
File Size	732313
File Format	PDF
ISSN	21563381
Volume Number	3
Issue Number	2
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-01-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Photovoltaic cells Silicon Passivation Metals Dielectrics Ring lasers Scanning electron microscopy silicon solar cells Aluminum local back surface field (Al-LBSF) screen-printed Al
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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