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The morphology of the polymer/electrode interfaces within polymer light-emitting diodes with a poly(cyanoterephthalylidene) polymer as the active layer, poly (2,5,2 ,5 -hexyloxy-8,7 -dicyano-di-para-phenylenevinylene) (CN-PPV), was studied by scanning force microscopy (SFM). The structure and roughness of (i) the substrates (indium-tin oxide (ITO)), (ii) the CN-PPV films spin-coated from different...
Thin 2-150 nm spin-coated films of poly(3,3 -phthalidylidene-4,4 -biphenylene) (PPB) on gold and silicon substrates with native oxides were investigated with scanning force microscopy and ellipsometry. The film morphology and film thickness were found to depend strongly upon the solvent (chloroform and cyclohexanone), the PPB concentration in the solvent, as well as the substrate.
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