Enhanced exciton migration in electrospun poly 2-methoxy-5-(2(')-ethylhexyloxy)-1,4-phenylenevinylene /poly(vinyl pyrrolidone) nanofibers-易丝帮

Enhanced exciton migration in electrospun poly 2-methoxy-5-(2(')-ethylhexyloxy)-1,4-phenylenevinylene /poly(vinyl pyrrolidone) nanofibers

2019/11/27 21:19:27 Zhou, R. T., W. Chen, X. Y. Jiang, S. F. Wang and Q. H. Gong

We present the studies on static and transient optical characteristics of electrospun poly[2-methoxy-5-(2(')-ethylhexyloxy)-1,4- phenylenevinylene]/poly(vinyl pyrrolidone) (MEH-PPV/PVP) nanofibers. [6,6]-phenyl-C61 butyric acid methyl ester is mixed into the polymer matrix, working as quenchers to optical excitons. Comparing with the spin-coated films, the nanofibers exhibit enhanced exciton migration in speed and amplitude. The results are explained together with photoluminescent spectra blueshifting and longer exciton lifetime. Reduced aggregation and long-range order simultaneously induced by electric field are regarded as the mechanism for the phenomena.

Journal: Applied Physics Letters
Volume: 96
Issue: 13
Pages:
ISSN: 0003-6951
DOI: 10.1063/1.3374336
Year: 2010
Number:
Type:

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