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Effect of Mixed Layer Crystallinity on the Performance of Mixed Heterojunction Organic Photovoltaic Cells
Author(s) -
Song Byeongseop,
Rolin Cedric,
Zimmerman Jeramy D.,
Forrest Stephen R.
Publication year - 2014
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.201305099
Subject(s) - materials science , nanocrystalline material , heterojunction , photovoltaic system , crystallinity , organic solar cell , layer (electronics) , vacuum evaporation , deposition (geology) , evaporation , optoelectronics , active layer , vacuum deposition , chemical vapor deposition , chemical engineering , thin film , nanotechnology , polymer , composite material , ecology , paleontology , thermodynamics , physics , thin film transistor , sediment , engineering , biology
Organic vapor‐phase deposition (OVPD) is used to grow tetraphenyldibenzoperiflanthen (DBP):C 70 mixed heterojunction photovoltaic devices. Compared with vacuum thermal evaporation (VTE), the OVPD‐grown film develops nanocrystalline domains of C 70 . Optimized OVPD‐grown OPVs have a 61% fill factor for a 100 nm active layer thickness, whereas VTE‐grown devices have a 47% fill factor at the same thickness.