Hexagonal sphere gratings for enhanced light trapping in crystalline silicon solar cells

Eisenlohr J, Benick J, Peters M, Blaesi B, Goldschmidt JC, Hermle M (2014)

Publication Type: Journal article

Publication year: 2014

Journal

Optics Express Optical Society of America

Book Volume: 22

Pages Range: A111-A119

Journal Issue: 1

DOI: 10.1364/OE.22.00A111

Abstract

Enhanced absorption of near infrared light in silicon solar cells is important for achieving high conversion efficiencies while reducing the solar cell's thickness. Hexagonal gratings on the rear side of solar cells can achieve such absorption enhancement. Our wave optical simulations show photocurrent density gains of up to 3 mA/cm2 for solar cells with a thickness of 40 μm and a planar front side. Hexagonal sphere gratings have been fabricated and optical measurements confirm the predicted absorption enhancement. The measured absorption enhancement corresponds to a photocurrent density gain of 1.04 mA/cm2 for planar wafers with a thickness of 250 μm and 1.49 mA/cm2 for 100 μm. © 2013 Optical Society of America.

Involved external institutions

Fraunhofer-Institut für Solare Energiesysteme (ISE) / Fraunhofer Institute for Solar Energy Systems DE Germany (DE)

How to cite

APA:

Eisenlohr, J., Benick, J., Peters, M., Blaesi, B., Goldschmidt, J.C., & Hermle, M. (2014). Hexagonal sphere gratings for enhanced light trapping in crystalline silicon solar cells. Optics Express, 22(1), A111-A119. https://doi.org/10.1364/OE.22.00A111

MLA:

Eisenlohr, Johannes, et al. "Hexagonal sphere gratings for enhanced light trapping in crystalline silicon solar cells." Optics Express 22.1 (2014): A111-A119.

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