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Solution‐Processed, Molecular Photovoltaics that Exploit Hole Transfer from Non‐Fullerene, n‐Type Materials
Author(s) -
Douglas Jessica D.,
Chen Mark S.,
Niskala Jeremy R.,
Lee Olivia P.,
Yiu Alan T.,
Young Eric P.,
Fréchet Jean M. J.
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.201305444
Subject(s) - fullerene , organic solar cell , materials science , photovoltaics , photovoltaic system , electron transfer , nanotechnology , optoelectronics , electrical engineering , chemistry , photochemistry , organic chemistry , engineering
Solution‐processed organic photovoltaic devices containing p‐type and non‐fullerene n‐type small molecules obtain power conversion efficiencies as high as 2.4%. The optoelectronic properties of the n‐type material BT(TTI‐ n 12) 2 allow these devices to display high open‐circuit voltages (>0.85 V) and generate significant charge carriers through hole transfer in addition to the electron‐transfer pathway, which is common in fullerene‐based devices.