Electric dipole modulation for boosting carrier recombination in green InP QLEDs under strong electron injection.

ABSTRACT: Enhanced and balanced carrier injection is essential to achieve highly efficient green indium phosphide (InP) quantum dot light-emitting diodes (QLEDs). However, due to the poor injection of holes in green InP QLEDs, the carrier injection is usually balanced by suppressing the strong electron injection, which decreases the radiation recombination rate dramatically. Here, an electric dipole layer is introduced to enhance the hole injection in the green InP QLED with a high mobility electron transport layer (ETL). The ultra-thin MoO₃ electric dipole layer is demonstrated to form a positive built-in electric field at the interface of the hole injection layer (HIL) and hole transport layer (HTL) due to its deep conduction band level. Simulation and experimental results support that

SUBMITTER: Zhang T 

PROVIDER: S-EPMC9846436 | biostudies-literature | 2023 Jan

REPOSITORIES: biostudies-literature