High‐Efficiency and Stable Pure Bromine Blue Light‐Emitting Diodes Enabled by Hybrid Quasi‐2D Perovskite

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This research demonstrates high-performance blue light-emitting diodes using quasi-2D perovskite, suggesting enhanced stability and efficiency.

Achieving a maximum external quantum efficiency of 20.8% and brightness of 14,696 cd m−2 represents significant advancement in blue light-emitting diodes.
Combining Ruddlesden-Popper and Dion-Jacobson types of quasi-2D perovskite enhances both efficiency and stability, addressing previous challenges.
Utilizing pentylamine and pentanediamine in the construction of perovskite films results in narrower phase distribution, improving performance.
The operational stability of 38.7 minutes signifies a breakthrough in the usability of bromine-based blue LEDs for practical applications.

Liu et al. (2025) studied this question.

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This research demonstrates high-performance blue light-emitting diodes using quasi-2D perovskite, suggesting enhanced stability and efficiency.