Designs of InGaN Micro-LED Structure for Improving Quantum Efficiency at Low Current Density.

ABSTRACT: Here we report a comprehensive numerical study for the operating behavior and physical mechanism of nitride micro-light-emitting-diode (micro-LED) at low current density. Analysis for the polarization effect shows that micro-LED suffers a severer quantum-confined Stark effect at low current density, which poses challenges for improving efficiency and realizing stable full-color emission. Carrier transport and matching are analyzed to determine the best operating conditions and optimize the structure design of micro-LED at low current density. It is shown that less quantum well number in the active region enhances carrier matching and radiative recombination rate, leading to higher quantum efficiency and output power. Effectiveness of the electron blocking layer (EBL) for micro-LED is discu

SUBMITTER: Lu S 

PROVIDER: S-EPMC8175512 | biostudies-literature | 2021 Jun

REPOSITORIES: biostudies-literature