Author/Authors :
Yu، نويسنده , , G. and Yang، نويسنده , , Y. and Cao، نويسنده , , Y. and Pei، نويسنده , , Q. and Zhang، نويسنده , , C. and Heeger، نويسنده , , A.J.، نويسنده ,
Abstract :
The light-emitting electrochemical cell (LEC) is used to measure the charge injection energy gap in semiconducting polymers. Simultaneous measurements of the onset of electrochemical doping, electrical injection, and electroluminescence from light-emitting electrochemical cells determine the magnitude of the exciton binding energy; the LEC data are consistent with the semiconductor model in which the exciton binding energy is small.
