An effective light trapping configuration for thin-film solar cells

An effective light trapping configuration for thin-film solar cells

Many thin-film solar cells make a compromise between achieving complete optical absorption using films that are thicker than the optical absorption length and achieving efficient conversion of the absorbed photons into photocurrent which is favored in thinner structures. We evaluate the performance...

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Veröffentlicht in:Applied physics letters 2007-12, Vol.91 (24), p.243501-243501-3
Hauptverfasser: Rim, Seung-Bum, Zhao, Shanbin, Scully, Shawn R., McGehee, Michael D., Peumans, Peter
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container_issue 24
container_start_page 243501
container_title Applied physics letters
container_volume 91
creator Rim, Seung-Bum
Zhao, Shanbin
Scully, Shawn R.
McGehee, Michael D.
Peumans, Peter
description Many thin-film solar cells make a compromise between achieving complete optical absorption using films that are thicker than the optical absorption length and achieving efficient conversion of the absorbed photons into photocurrent which is favored in thinner structures. We evaluate the performance of a V-shaped light trapping configuration that substantially increases the photocurrent generation efficiency for all angles of incidence and that is applicable to a broad class of low-cost thin-film solar cells. We experimentally demonstrate its effectiveness for small molecular weight and polymer organic solar cells. A 52% efficiency enhancement is obtained for a 170 - nm -thick polymer cell.
doi_str_mv 10.1063/1.2789677
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title An effective light trapping configuration for thin-film solar cells
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