In-situ molecular passivation for spectrally stable pure-blue, vacuum-evaporated PeLEDs (IMAGE)

Industrial Chemistry & Materials

In-situ molecular passivation for spectrally stable pure-blue, vacuum-evaporated PeLEDs

Caption

Concept and device schematic. Left: A phenanthroline ligand (BUPH1) coordinates under-coordinated Pb(II) on the perovskite lattice, suppressing halide-vacancy defects. Center: Vacuum-evaporated PeLED stack. Right: Representative EL spectra illustrate narrow, color-stable blue emission (peak 472 nm, FWHM 19 nm) enabled by in-situ passivation.

Credit

Byungha Shin, Korea Advanced Institute of Science and Technology (KAIST), Republic of Korea

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