Improved performance in green light-emitting diodes made with CdSe-conjugated polymer composite

In order to investigate semi-conductor nanocrystals in polymer light-emitting diodes (PLEDs), CdSe nanocrystals-conjugated polymer composite was used as the emitting material. High-quality CdSe were synthesized successfully by simple chemical colloid methods and doped into a green light-emitting polymer, PFBT8. As the concentration of CdSe in composite increases, the turn-on voltage of the device decreases, while EL intensity increases. The improvement is more remarkable when the concentration of CdSe increases in a certain range.