Optimizations of luminescent materials for white light emitting diodes toward healthy lighting

Wang, Fen; Pan, Hao; Mao, Wei; Wang, Dan

doi:10.1016/j.heliyon.2024.e34795

Heliyon

2024

DOI: 10.1016/j.heliyon.2024.e34795

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Optimizations of luminescent materials for white light emitting diodes toward healthy lighting

Fen Wang,

Hao Pan,

Wei Mao

et al.

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2024

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Cited by 1 publication

References 110 publications

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Solution Processed Bilayer Metal Halide White Light Emitting Diodes

Liu,

Shonde,

Olasupo

et al. 2024

Advanced Materials

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Metal halide perovskites and perovskite‐related organic metal halide hybrids (OMHHs) have recently emerged as a new class of luminescent materials for light emitting diodes (LEDs), owing to their unique and remarkable properties, including near‐unity photoluminescence quantum efficiencies, highly tunable emission colors, and low temperature solution processing. While substantial progress has been made in developing monochromatic LEDs with electroluminescence across blue, green, red, and near‐infrared regions, achieving highly efficient and stable white electroluminescence from a single LED remains a challenging and under‐explored area. Here, a facile approach to generating white electroluminescence is reported by combining narrow sky‐blue emission from metal halide perovskites and broadband orange/red emission from zero‐dimensional (0D) OMHHs. For the proof of concept, utilizing TPPcarz+ passivated two‐dimensional (2D) CsPbBr3 nanoplatelets (NPLs) as sky blue emitter and 0D TPPcarzSbBr4 as orange/red emitter (TPPcarz+ = triphenyl (9‐phenyl‐9H‐carbazol‐3‐yl) phosphonium), white LEDs (WLEDs) with a solution processed bilayer structure have been fabricated to exhibit a peak external quantum efficiency (EQE) of 4.8% and luminance of 1507 cd m−2 at the Commission Internationale de L'Eclairage (CIE) coordinate of (0.32, 0.35). This work opens a new pathway for creating highly efficient and stable WLEDs using metal halide perovskites and related materials.

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Solution Processed Bilayer Metal Halide White Light Emitting Diodes

Liu,

Shonde,

Olasupo

et al. 2024

Advanced Materials

View full text Add to dashboard Cite

show abstract

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Optimizations of luminescent materials for white light emitting diodes toward healthy lighting

Cited by 1 publication

References 110 publications

Solution Processed Bilayer Metal Halide White Light Emitting Diodes

Solution Processed Bilayer Metal Halide White Light Emitting Diodes

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