کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1265562 | 972231 | 2008 | 12 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: On the desired properties of a conjugated polymer-electrolyte blend in a light-emitting electrochemical cell On the desired properties of a conjugated polymer-electrolyte blend in a light-emitting electrochemical cell](/preview/png/1265562.png)
We present results from a systematic study on the influence of the conjugated polymer (CP) on the performance of planar light-emitting electrochemical cells (LECs) with a device structure of Au/{CP + poly(ethylene oxide) (PEO) + KCF3SO3}/Au. We have employed six different CPs, and we demonstrate that in order to attain a fast turn-on time and a strong light emission intensity, it is critical that the p-type doping (oxidation) potential of the CP is situated within the electrochemical stability window of the {PEO + KCF3SO3} electrolyte. We also find that a high ionic conductivity of the active material correlates with a small phase separation between the CP and the {PEO + KCF3SO3} electrolyte, and that a doping concentration of ∼0.1 dopants/CP repeat unit is a generic feature of the progressing doping fronts in all investigated devices. Finally we report the first observation of a light emission zone positioned in close proximity to the positive anode in a CP-based LEC.
Journal: Organic Electronics - Volume 9, Issue 5, October 2008, Pages 699–710