Polythiophene LEDs Covering the Whole Visible Spectrum and a Bit More

1 Polythiophene LEDs covering the whole visible spectrum and a bit more 

By building devices with the type of polymers described, and for the high band gap polymers including a hole blocking layer 2- 4-biphenylyl -5- 4-tert-butylphenyl -1,3,4-oxadiazole, PBD (structure is shown in Fig. lb) to increase the efficiency, it 

Emission spectrum of the UV-diode. The emission peak has its maximum at 394 nm. 

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