Author/Authors :
Tasch، نويسنده , , S. M. Holzer، نويسنده , , L. and Wenzl، نويسنده , , F.P. and Gao، نويسنده , , J. and Winkler، نويسنده , , B. and Dai، نويسنده , , L. Qi-Mau، نويسنده , , A.W.H. and Sotgiu، نويسنده , , R. and Sampietro، نويسنده , , M. and Scherf، نويسنده , , U. and Müllen، نويسنده , , K. M. Heeger and R. G. H. Robertson، نويسنده , , A.J. and Leising، نويسنده , , G.، نويسنده ,
Abstract :
The response times of light-emitting electrochemical cells (LEC) can be decreased to several microseconds by minimising phase separations in the active layer. This e.g. can be realised by optimising the phase morphology of the blend of an ion conductive polyethylene oxide and an electronic conductive laddertype PPP or by using a single polymer combining electron- and ion conduction properties, so that phase separations are excluded. Latter can be realised by a PPV with ionic conductive sidechains. We present efficient LECs yielding extremely low onset voltages.
