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Electrogenerated Chemiluminescence and Fluorescence Lifetime Spatial Heterogeneity of Poly (2-methoxy-5-(2-ethylhexyloxy)-1,4-phenylenevinylene) in Presence of [6,6]-phenyl-C61-butyric Acid Methyl Ester

Published online by Cambridge University Press:  15 January 2013

Hongwei Geng ,
Shanlin Pan  and
Dehong Hu
Hongwei Geng
Affiliation:
Department of Chemistry, The University of Alabama, Tuscaloosa, Alabama 35487 USA
Shanlin Pan
Affiliation:
Department of Chemistry, The University of Alabama, Tuscaloosa, Alabama 35487 USA
Dehong Hu
Affiliation:
Fundamental and Computational Science Directorate, Pacific Northwest National Laboratory, PO Box 999, Richland, WA 99352
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Abstract

We present electrogenerated chemiluminescence (ECL) and fluorescence lifetime mapping of MEH-PPV/PCBM thin films. The ECL results show that the oxidation peak of MEH-PPV near 0.7 V (vs. SCE) and ECL response of films shifted positively towards 1.2 V in the presence of PCBM. At the same time, the oxidation current density of MEH-PPV increases along with the decrease of ECL intensity in the presence of PCBM. The fluorescence lifetime images clearly show that the lifetime spatial heterogeneities are affected by different substrates and MEH-PPV/PCBM ratios. Meanwhile, the lifetime of MEH-PPV decreases with the increasing of film thickness. The lifetimes of MEH-PPV films on TiO2 substrate are lower than films on glass.

Keywords

optoelectronicoptical propertiespolymer
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1493: Symposium E/H – Photovoltaic Technologies, Devices and Systems Based on Inorganic Materials, Small Organic Molecules and Hybrids , 2013 , pp. 263 - 268
Copyright
Copyright © Materials Research Society 2013 

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