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- W1998485857 abstract "The effect of very thin polymer interlayers made of either acid-initiated cross-linkable polyfluorenes or the parent non-cross-linkable polyfluorenes, on top of poly(3,4-ethylenedioxythiophene) doped with polystyrene sulfonic acid, on the efficiency of light-emitting diodes based on three different electroluminescent (EL) polymers is studied. We find that the use of non-cross-linkable polymers leads to the formation of interlayers with a thickness not exceeding 1nm and their effect on the light-emitting diode characteristics is not directly correlated with the energetic position of the frontier levels, indicating that other effects, such as interfacial morphology and contact area, which may depend on the specific interlayer/EL polymer combination, play a significant role. When cross-linkable polymers are used, thicker interlayers are formed (up to about 7nm), and their effect is better related to their frontier level energy. In particular, we found that with these interlayers, a quite significant EL efficiency increase can be obtained." @default.
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- W1998485857 date "2008-04-15" @default.
- W1998485857 modified "2023-09-29" @default.
- W1998485857 title "Spin cast thin polymer interlayers in polymer light-emitting diodes: Thickness control through use of cross-linkable polymers" @default.
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- W1998485857 doi "https://doi.org/10.1063/1.2896452" @default.
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