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Solar Cells: Solvent Additive Effects on Small Molecule Crystallization in Bulk Heterojunction Solar Cells Probed During Spin Casting (Adv. Mater. 44/2013)
Author(s) -
Perez Louis A.,
Chou Kang Wei,
Love John A.,
van der Poll Thomas S.,
Smilgies DetlefM.,
Nguyen ThucQuyen,
Kramer Edward J.,
Amassian Aram,
Bazan Guillermo C.
Publication year - 2013
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.201370275
Subject(s) - materials science , polymer solar cell , crystallization , fullerene , casting , polymer , heterojunction , organic solar cell , chemical engineering , molecule , active layer , layer (electronics) , nanotechnology , composite material , optoelectronics , organic chemistry , chemistry , engineering , thin film transistor
In situ X‐ray scattering is used by Guillermo C. Bazan, Aram Amassian and co‐workers to investigate the kinetics of crystallization during spincasting of an organic bulk‐heterojunction (BHJ) layer based on a small molecule‐fullerene blend, as described on page 6380. The high‐speed measurements capture evidence of an unexpected structural evolution and phase transformation of the small‐molecule donor both during and shortly after spin‐casting; such behavior is not known to occur in polymer‐fullerene BHJ solar cells.