Fabrication and characterization of Quantum Dot based LEDs with enhanced emission properties by micro cavities

This paper presents a novel approach to enhance the performance of Quantum dot (QD) based light-emitting diodes (LEDs) by incorporating Bragg resonator substrates. By depositing QD-LED layer stacks on tailored Bragg resonator substrates, the emission spectrum of red-emitting QD-LEDs is narrowed to less than 20 nm, and the emission pattern becomes more directional. Additionally, the modulation characteristics of QD-LEDs on Bragg-substrates are investigated. These findings demonstrate the potential to improve the usability of QD-LEDs in displays, lighting, and sensing applications.