2024
DOI: 10.1021/acsami.3c17911
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Spectrally Stable Deep-Blue Light-Emitting Diodes Based on Layer-Transferred Single-Crystalline Ruddlesden–Popper Halide Perovskites

Joonyun Kim,
Young Ho Chu,
Jinu Park
et al.

Abstract: A novel approach to producing high-color-purity blue-lightemitting diodes based on single-crystalline Ruddlesden−Popper perovskites (RPPs) is reported. The utilization of a pure bromide composition eliminates any possibility of halide segregation, which can otherwise lead to undesired shifts in the emission wavelength or irreversible degradation of the spectral line width. Phase-pure PEA 2 MAPb 2 Br 7 single crystals with a lateral size exceeding 1 cm 2 can be synthesized using the inverse temperature crystall… Show more

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