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Highly efficient perovskite light-emitting diodes for next-generation display technology
IMAGE: Figure1. Perovskite nanoparticle structure developed by a joint research team (Left), device efficiency (EQE)-versus-luminance curve of perovskite light-emitting diodes and image of large-area light-emitting devices (Right).
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seoul national university
Research team at Seoul National University (Prof. Tae-Woo Lee) and University of Pennsylvania (Prof. Andrew M. Rappe) developed perovskite light-emitting diodes (PeLEDs) with an external quantum efficiency (EQE) of 23.4%. The research results were published in Nature Photonics, which is the world-renowned international academic journal, on January 4th (Title: Comprehensive defect suppression in perovskite nanocrystals for high-efficiency light-emitting diodes).
Metal halide perovskites have very narrow spectral emission, excellent color purity, low material cost, and wide and easy color-tunability. Based on these advantages, per