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

18th International Conference PhysicA.SPb

Stepanov, E.M.^1 ; Tadtaev, P.O.^1 ; Vatalev, O.S.^1 ; Mikhailov, I.I.^1 ; Tarasov, S.A.^1 ; Solomonov, A.V.^1

Department of Microelectronics, Saint-Petersburg Electrotechnical University, LETI, 5 Prof. Popov Str., St.-Petersburg

197376, Russia^1

关键词: Colloidal quantum dots;    Colloidal synthesis;    Color rendering index;    Emission intensity;    Emission spectrums;    High color rendering index;    High vacuum annealing;    Light-emitting structures;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/769/1/012057/pdf
DOI  :  10.1088/1742-6596/769/1/012057

来源: IOP

【 摘 要 】

Quantum dots created by colloidal synthesis (CQDs) 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 light- emitting 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.