Research organic light-emitting diodes with colloidal quantum dots

In this research we have created light-emitting structures that contain colloidal quantum dots of cadmium selenide in the active layer. To do so, we have used the method of vacuum thermal deposition for the formation of organic layers. This method allowed us to create several OLED structures. We have compared their photo- and electroluminescence spectra, and have revealed necessary conditions for the creation of high quality layers

Luminescence of nanostructures based on semiconductor nitrides

Light-emitting diode structures on the basis of (Al, Ga, ln)N solid solutions with and without superlattices were investigated. Experiments in a wide range of temperatures (10—300 K) and noise currents (10 nA — 2 mA) were performed. It was found that the structure with superlattices has a higher stability and better work performance. Apparently, the use of superlattices can compensate for the elastic stresses and piezoelectric fields at the heterointerface. This compensation reduces the formation of dislocations in the structures with superlattices, which increases the intensity of radiation and decreases self-heating effects