Premium
Fast Printing and In Situ Morphology Observation of Organic Photovoltaics Using Slot‐Die Coating
Author(s) -
Liu Feng,
Ferdous Sunzida,
Schaible Eric,
Hexemer Alexander,
Church Matthew,
Ding Xiaodong,
Wang Cheng,
Russell Thomas P.
Publication year - 2015
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.201404040
Subject(s) - materials science , grazing incidence small angle scattering , organic solar cell , photovoltaics , crystallization , layer (electronics) , polymer , spin coating , coating , polymer solar cell , diffraction , active layer , nanotechnology , scattering , chemical engineering , optics , composite material , photovoltaic system , ecology , physics , neutron scattering , thin film transistor , small angle neutron scattering , biology , engineering
The mini‐slot‐die coater offers a simple, convenient, materials‐efficient route to print bulk‐heterojunction (BHJ) organic photovoltaics (OPVs) that show efficiencies similar to spin‐coating. Grazing‐incidence X‐ray diffraction (GIXD) and GI small‐angle X‐ray scattering (GISAXS) methods are used in real time to characterize the active‐layer formation during printing. A polymer‐aggregation–phase‐separation–crystallization mechanism for the evolution of the morphology describes the observations.