5 December 2006 Tuning hole transport in a highly dispersed blend of chemically similar polyfluorene copolymers
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Proceedings Volume 6333, Organic Light Emitting Materials and Devices X; 633314 (2006); doi: 10.1117/12.681024
Event: SPIE Optics + Photonics, 2006, San Diego, California, United States
Abstract
Here we report results of time-of-flight (ToF) measurements on blends of different ratios of poly(9,9-dioctylfluorene-cobis- N,N'-(4-methoxylphenyl)-bis-N,N'-phenyl-1,4-phenylenediamine) (PFMO) and the structurally similar poly(9,9- dioctylfluorene-co-N-(4-methoxyphenyl)diphenylamine) (TFMO). It is shown that the hole mobility can be tuned over three orders of magnitude with a mobility minimum at 10% PFMO and 90% TFMO. We also use Raman microscopy to demonstrate that the blends do not phase separate within the one micron resolution of our experiment.
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M. James Harding, Robert C. Maher, Lesley F. Cohen, Alasdair J. Campbell, "Tuning hole transport in a highly dispersed blend of chemically similar polyfluorene copolymers", Proc. SPIE 6333, Organic Light Emitting Materials and Devices X, 633314 (5 December 2006); doi: 10.1117/12.681024; https://doi.org/10.1117/12.681024
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KEYWORDS
Polymers

Raman spectroscopy

Temperature metrology

Organic light emitting diodes

Microscopy

Ionization

Electrodes

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