Xi CHEN, Feng-mei CHENG, Hai-dong LI, Ji-dong ZHANG. Effect of Residual Gel on Photoluminescence of Polyoctylfluorene Thin Film[J]. Polymer Bulletin, 2011,24(7):65-70.
Xi CHEN, Feng-mei CHENG, Hai-dong LI, Ji-dong ZHANG. Effect of Residual Gel on Photoluminescence of Polyoctylfluorene Thin Film[J]. Polymer Bulletin, 2011,24(7):65-70. DOI: 10.14028/j.cnki.1003-3726.2011.07.001.
This paper characterized the spin coating thin film made of polyoctylfluorene (PFO) toluene solution which be dissolved for 12min
30min and 50min respectively under the 55℃ by photoluminescence spectra
UV-Visible spectra and atomic force microscope.The results indicate that the PFO thin film made of solution dissolving for shorter time contains large gel particles with average size of 120nm×80nm
which lead to partly β phase photoluminescence.When dissolving time become longer
large particles disappear and the photoluminescence spectra was totally of amorphous phase. After solvent vapor treatment or thermo annealing the residual gel particle structure still remain
which decrease photoluminescence.These results indicate that the residual gel in the solution has negative effects on luminous property of film.