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Trapping Light in Polymer Photodiodes with Soft Embossed Gratings
Author(s) -
Stolz Roman L.,
Inganäs O.,
Granlund T.,
Nyberg T.,
Svensson M.,
Andersson M. R.,
Hummelen J. C.
Publication year - 2000
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/(sici)1521-4095(200002)12:3<189::aid-adma189>3.0.co;2-2
Subject(s) - materials science , embossing , grating , optoelectronics , elastomer , layer (electronics) , optics , photovoltaic system , trapping , polymer , active layer , photodiode , nanotechnology , composite material , ecology , physics , biology , thin film transistor
Increasing the conversion efficiency is very important in photovoltaic devices, as is cheap and simple technology. Here is demonstrated a soft embossing technique for printing a submicrometer grating with an elastomeric mold into an optically active polymer layer in a photovoltaic device (see Figure). The light trapping due to the grating pattern enhances the photoconversion efficiency by more than 25 % at normal light incidence (see also inside front cover).