Spin cast thin polymer interlayers in polymer light-emitting diodes: Thickness control through use of cross-linkable polymers
作者： Gabriel Bernardo , Ana Charas , Luís Alcácer , Jorge Morgado
DOI: 10.1063/1.2896452
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摘要: The effect of very thin polymer interlayers made either acid-initiated cross-linkable polyfluorenes or the parent non-cross-linkable polyfluorenes, on top poly(3,4-ethylenedioxythiophene) doped with polystyrene sulfonic acid, efficiency light-emitting diodes based three different electroluminescent (EL) polymers is studied. We find that use leads to formation a thickness not exceeding 1nm and their diode characteristics directly correlated energetic position frontier levels, indicating other effects, such as interfacial morphology contact area, which may depend specific interlayer/EL combination, play significant role. When are used, thicker formed (up about 7nm), better related level energy. In particular, we found these interlayers, quite EL effic...
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