Polymers for organic light emitting devices

In polymers, less distinction is drawn between primarily electron-transporting materials and primarily hole-transporting materials. Indeed, some molecules can be functionalized to accept carbanions efficiently in one region and carbocations in 

Although one ean produee polymer OLEDs without an FTTL, the performance of the device improves dramatieally if a material specialized for hole injection from the anode is used. The FTTL reduces the device operating voltage, inereases lifetime, and 

Comparisons of polymer OLEDs generally show an order of magnitude improvement in light emission efficiency for PPV-based devices when the surface of the ITO anode is treated with oxygen plasmas or acid cleaning methods (which modify the effective work function of the TTO surface). However, a thousand fold improvement results from the use of hole injeetion layers such as PEDOT PSS. 

Some PFO-like materials can also act as acceptable hole-injection layers as well as recombination layers fluorescing in the blue. An example of such a material is 

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Hebner, T. Wu, G Marcy, D. Lu, M. Sturm, J. 1998. Ink-jet printing of doped polymers for organic light emitting devices. Appl. Phys. Lett. 72 519-521. 

Polymers for Organic Light Emitting Devices/Diodes (OLEDs) O. Nuyken, E. Packer, M. Rojahn, V. Wiederhirn,... 

Polymers for Organic Light Emitting Devices/Diodes (OLEDs)... 

I 5 Metal/Polymer Interface Studies for Organic Light-Emitting Devices... 

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