Title:	Towards Ultra-Thin Silicon Solar Cells for High Specific Power Applications
Author(s):	Y. Lan, M. Delos Santos, D. Lai, X. Yan, A. Danner
Keywords:	c-Si, Etching, Lifetime, Thin Film (TF)
Topic:	Silicon Materials and Cells
Subtopic:	Thin Film and Foil-Based Si Cells
Event:	38th European Photovoltaic Solar Energy Conference and Exhibition
Session:	2DV.4.25
Pages:	355 - 357
ISBN:	3-936338-78-7
Paper DOI:	10.4229/EUPVSEC20212021-2DV.4.25
Price:	0,00 EUR
Document(s):	paper, poster

Abstract/Summary:

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This paper introduces a detailed study between carrier lifetime and wafer thickness in Czochralski-grown (Cz) crystalline silicon (c-Si) wafers which will later be processed into solar cells. Wafers are thinned to different thicknesses with a minimum of 54.8 µm via wet chemistry etching as carrier lifetime drops from around 3000 µs to lower than 500 µs. A negative correlation appears between the carrier lifetime and wafer thickness.