A strategy for high performance perovskite light-emitting diodes
Metal halide perovskites are promising candidates for use in light emitting diodes (LEDs), due to their potential for color tunable and high luminescence efficiency.
While recent advances in perovskite-based light emitting diodes (PeLEDs) have resulted in external quantum efficiencies exceeding 20.3% for the green emitters, and infrared emitters based on QD light-emitting device with the alkyl ammonium iodine salt perovskites have exceeded 21.3%.
A critical issue to date is creating highly emissive and stable perovskite emitters with the desirable emission band gap to achieve full-color displays and white LEDs.
Moreover, the optimization of the devices via balanced charge injection is certainly required for high performance PeLEDs.
Here, we report the simple methods including facile synthesis of stable and highly luminescent nano-crystals, and effective charge transport layers for high performance PeLEDs.