Recently, light emitting diodes based on quantum dots (QD-LED) are significantly appealing due to their unique features in optoelectronic fields. Narrow emission spectra, the simple synthesis methods, the high output light quality and the most importantly, the ability of controlling the wavelength of the emitting photon with the size of QDs, are some of the unique properties of these devices. In this study, presented structures are based on CdSe/ZnS and CdSe/ZnO QDs. The fabricated structures have the 2.5V turn-on voltage and the output light intensity of 59 lux/mm. Also the devices have the bandwidth of 8 MhZ that can be used in the visible light communication (VLC) to transfer the data.