Premium
Binary Organic Photovoltaic Blends: A Simple Rationale for Optimum Compositions
Author(s) -
Müller Christian,
Ferenczi Toby A. M.,
CampoyQuiles Mariano,
Frost Jarvist M.,
Bradley Donal D. C.,
Smith Paul,
StingelinStutzmann Natalie,
Nelson Jenny
Publication year - 2008
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.200800963
Subject(s) - materials science , eutectic system , photovoltaic system , polymer , microstructure , phase (matter) , polymer solar cell , component (thermodynamics) , chemical engineering , organic solar cell , polymer blend , nanotechnology , composite material , organic chemistry , copolymer , thermodynamics , ecology , engineering , biology , chemistry , physics
Polymer/small molecule binaries , such as P3HT:PC 61 BM display eutectic phase behavior with optimum photovoltaic performance at slightly hypoeutectic compositions (with respect to polymer content). Such hypoeutectic blends readily solidify into a finely phase‐separated matrix surrounding primary crystals of the small‐molecular species. The resulting large interfacial area and component connectivity is a desirable microstructure for bulk‐heterojunction solar cells.