Researchers showed that an ultrathin, nanolayered boron nitride interlayer can improve the stability of perovskite quantum dot LEDs by passivating defects, suppressing ion migration, and enhancing heat dissipation. BN-optimized devices achieved an average peak EQE of 30.05% and a measured T50 lifetime of 102 hours at 2,000 cd m-2, with accelerated testing projecting a T50 of 25,263 hours at 100 cd m-2.
