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Enhancing the Photovoltage of Polymer Solar Cells by Using a Modified Cathode
Author(s) -
Zhang F.,
Ceder M.,
Inganäs O.
Publication year - 2007
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/adma.200602597
Subject(s) - materials science , cathode , polymer , photovoltaic system , surface photovoltage , optoelectronics , nanotechnology , engineering physics , chemical engineering , electrical engineering , composite material , physics , quantum mechanics , spectroscopy , engineering
Enhancements in open circuit voltage , photocurrent (see figure), and fill factor are observed by inserting a thin poly(ethylene oxide) layer between a metal electrode (Al) and active layers in polymer solar cells based on a polyfluorene copolymer poly((2,7‐(9‐(2′‐ethylhexyl)‐9‐hexyl‐fluorene)‐ alt ‐5,5‐(4′,7′‐di‐2‐thienyl‐2′,1′,3′‐benzothiadiazole))‐ co ‐(2,7‐(9‐(2′‐ethylhexyl)‐9‐hexyl‐fluorene)‐ alt‐2,5‐thiophene ))(APFO‐5) and [6,6]‐phenyl‐C 61 ‐butyric acid methyl ester (PCBM) under illumination of AM 1.5 (100 mW cm –2 ).