Green route synthesis of high quality CdSe quantum dots for applications in light emitting devices

Investigation was made on light emitting diodes fabricated using CdSe quantum dots. CdSe quantum dots were synthesized chemically using olive oil as the capping agent, instead of toxic phosphine. Room temperature photoluminescence investigation showed sharp 1st excitonic emission peak at 568 nm. Bi-layer organic/inorganic (P3HT/CdSe) hybrid light emitting devices were fabricated by solution process. The electroluminescence study showed low turn on voltage (similar to 2.2 V).The EL peak intensity was found to increase by increasing the operating current. (C) 2011 Elsevier Inc. All rights reserved.