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Template process for engineering the photoluminescence of PVK and PPV‐based nanowires
Author(s) -
Mbarek Mohamed,
Garreau Alexandre,
Massuyeau Florian,
Alimi Kamel,
Wéry Jany,
Faulques Eric,
Duvail JeanLuc
Publication year - 2019
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.48201
Subject(s) - nanowire , materials science , photoluminescence , acceptor , exciton , raman spectroscopy , polymer , optoelectronics , stacking , nanotechnology , coaxial , characterization (materials science) , diode , chemical engineering , composite material , optics , organic chemistry , chemistry , condensed matter physics , physics , engineering , quantum mechanics , electrical engineering
Blends or stacking layers of two complementary materials are the dominant methods to get a strong donor‐acceptor behavior for in‐solution‐processed thin film devices. These methods result in different local arrangement of the two species, a central point for tuning the donor‐acceptor. In this work, it is proposed to organize a donor (poly[vinylcarbazole], PVK) and an acceptor (poly[para‐phenylenevinylene], PPV) in a nanowire geometry. A two‐step template process was used to fabricate coaxial nanowires with PPV and PVK alternatively as the core or the shell material, as shown by morphological characterization and micro‐Raman spectroscopy study. The differences of the photoluminescence properties of these two types of coaxial nanowires compared with those of PVK‐PPV blend nanowires and of pure PPV and PVK nanowires are discussed by considering the local polymer arrangement and the exciton diffusion length. Nano‐sources, as well as nanostructured light emitting diodes, could take advantage of this 1D‐like morphology for light emission control. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019 , 136 , 48201.