Title:
Implementation of a Homogenous High-Sheet-Resistance Emitter in Multicrystalline Silicon Solar Cells
Implementation of a Homogenous High-Sheet-Resistance Emitter in Multicrystalline Silicon Solar Cells
Author(s)
Yelundur, Vijay
Nakayashiki, Kenta
Hilali, Mohamed M.
Rohatgi, Ajeet
Nakayashiki, Kenta
Hilali, Mohamed M.
Rohatgi, Ajeet
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Abstract
Solar cell efficiency enhancement resulting from the implementation of a high-sheet-resistance emitter (95 Ω/sq.) in multicrystalline silicon solar cells with screenprinted contacts is demonstrated in this paper. Solar cells on low-cost String Ribbon Si from Evergreen Solar, Baysix
mc-Si from Deutsche Solar, and high-quality float zone silicon with 45 Ω/sq. and 95 Ω/sq. phosphorus-doped n+- emitters are fabricated with RTP-fired screen-printed
contacts and characterized to asses the impact of a highemitter-sheet resistance emitter on cell performance. Screen-printed mc-Si solar cells show an improvement in
Voc of 4-5 mV in most cases that is attributed to the use of the high-sheet-resistance emitter. An appreciable increase
in Jsc by as much as 1.0 mA/cm(2) is also observed due to enhanced blue response identified by internal quantum efficiency measurement.
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Date Issued
2005-01
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Proceedings