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An Alternative Strategy to Adjust the Recombination Mechanism of Organic Photovoltaics by Implementing Ternary Compounds
Author(s) -
Gasparini Nicola,
Salvador Michael,
Fladischer Stefanie,
Katsouras Athanasios,
Avgeropoulos Apostolos,
Spiecker Erdmann,
Chochos Christos L.,
Brabec Christoph J.,
Ameri Tayebeh
Publication year - 2015
Publication title -
advanced energy materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.08
H-Index - 220
eISSN - 1614-6840
pISSN - 1614-6832
DOI - 10.1002/aenm.201501527
Subject(s) - materials science , ternary operation , photovoltaics , mechanism (biology) , recombination , organic solar cell , nanotechnology , chemical physics , engineering physics , photovoltaic system , polymer , computer science , electrical engineering , quantum mechanics , physics , composite material , engineering , genetics , gene , programming language , biology
Trap‐assisted recombination is one of the main loss mechanisms in bulk‐heterojunction (BHJ) solar cells. Results suggest that introducing a near infrared (NIR) polymer into the 2,3‐bis(3‐(octyloxy)phenyl)quinoxaline (PIDTTQ):[6,6]‐phenyl C 70 butyric acid methyl ester (PC 70 BM) host system suppresses trap‐assisted recombination in the binary blend, leading to a significant improvement of ≈60% in power conversion efficiency for ternary organic solar cells at low light intensity.