Control of perovskites crystallization via polymer scaffold towards pure blue Light-emitting diodes with high color purity

Materials Letters(2022)

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•PVP polymer could inhibit the growth of the larger n perovskite phase and narrow the spectra profile.•The introduction of PVP results in an ultra-smooth film morphology.•Blue PeLED with PVP modified perovskites show good color stability.
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Key words
Quasi-two perovskite,Polymer scaffold,Luminescence,Spectrally stable,Multilayer structure
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