Light-emitting structures based on colloidal quantum dots of cadmium sulphide having a high color rendering index

Abstract

Light-emitting structures based on colloidal quantum dots of cadmium sulphide having a high color rendering index Abstract. Quantum dots created by colloidal synthesis (CQD`s) were investigated. The paper shows how by changing the size and concentration of CQDs the emission spectrum of the structure with a color rendering index greater than 90 was achieved. Creation of the lightemitting structures involved spin-coating of CdS CQDs onto the glass substrate and consequent high-vacuum annealing. Methods allowing the increase of the emission intensity to achieve better approximation of the radiation spectra shape of white LEDs' spectra.