Enhanced light trapping in thin-film solar cells by a directionally selective filter

Ulbrich C, Peters M, Bläsi B, Kirchartz T, Gerber A, Rau U (2010)

Publication Type: Journal article

Publication year: 2010

Journal

Optics Express Optical Society of America

Book Volume: 18

Pages Range: A133-A138

Journal Issue: 102

DOI: 10.1364/OE.18.00A133

Abstract

A directionally selective multilayer filter is applied to a hydrogenated amorphous silicon solar cell to improve the light trapping. The filter prevents non-absorbed long-wavelength photons from leaving the cell under oblique angles leading to an enhancement of the total optical path length for weakly absorbed light within the device by a factor of kr = 3.5. Parasitic absorption in the contact layers limits the effective path length improvement for the photovoltaic quantum efficiency to a factor of kEQE = 1.5. The total short-circuit current density increases by ΔJsc = 0.2 mAcm2 due to the directional selectivity of the Bragg-like filter. © 2010 Optical Society of America.

Involved external institutions

Forschungszentrum Jülich / Research Centre Jülich (FZJ) DE Germany (DE) Fraunhofer-Institut für Solare Energiesysteme (ISE) / Fraunhofer Institute for Solar Energy Systems DE Germany (DE)

How to cite

APA:

Ulbrich, C., Peters, M., Bläsi, B., Kirchartz, T., Gerber, A., & Rau, U. (2010). Enhanced light trapping in thin-film solar cells by a directionally selective filter. Optics Express, 18(102), A133-A138. https://doi.org/10.1364/OE.18.00A133

MLA:

Ulbrich, Carolin, et al. "Enhanced light trapping in thin-film solar cells by a directionally selective filter." Optics Express 18.102 (2010): A133-A138.

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