High-efficiency, solution-processable, multilayer triple cation perovskite light-emitting diodes with copper sulfide–gallium–tin oxide hole transport layer and aluminum-zinc oxide–doped cesium electron injection layer

A. R.B.M. Yusoff, A. E.X. Gavim, A. G. Macedo, W. J. da Silva, F. K. Schneider, Mohd Asri Mat Teridi

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Light-emitting diodes with perovskite luminophores have great potential in next-generation displays because of their exceptional color purity with narrow emission bandwidth, broadband color tunability, and solution processability. However, their low luminescent efficiency is a critical drawback. Here, we report the first demonstration of a multicolor, large-area, perovskite display, which can be made flexible by using an optimized perovskite emissive layer sandwiched between inorganic metal oxide charge transport layers, all of which are coated via a facile solution process. We show that advanced interfacial engineering, especially the energy level alignment at the interface, plays a vital role in determining the device performance because of its effects on charge injection, transport, and recombination. These devices exhibit maximum current and power efficiencies of 74.25 cd A−1 and 89.72 lm/w for green emission, 21.40 cd A−1 and 25.84 lm/w for red emission, and 15.21 cd A−1 and 15.84 lm/w for blue emission, respectively. Furthermore, with the introduction of inorganic charge transport layers, these devices exhibit high environmental stability, and the encapsulated devices have operating lifetimes exceeding 450 h with an initial brightness of 1000 cd/m2.

Original languageEnglish
Pages (from-to)104-111
Number of pages8
JournalMaterials Today Chemistry
Volume10
DOIs
Publication statusPublished - 1 Dec 2018

Fingerprint

Cesium
Electron injection
Copper oxides
Aluminum
Perovskite
Light emitting diodes
Cations
Zinc
Multilayers
Positive ions
Charge transfer
Color
Charge injection
Oxides
Electron energy levels
Luminance
Demonstrations
Metals
Display devices
Bandwidth

Keywords

  • Electron injection layer
  • Hole transport layer
  • Light emitting diode
  • Perovskite

ASJC Scopus subject areas

  • Catalysis
  • Electronic, Optical and Magnetic Materials
  • Biomaterials
  • Polymers and Plastics
  • Colloid and Surface Chemistry
  • Materials Chemistry

Cite this

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title = "High-efficiency, solution-processable, multilayer triple cation perovskite light-emitting diodes with copper sulfide–gallium–tin oxide hole transport layer and aluminum-zinc oxide–doped cesium electron injection layer",
abstract = "Light-emitting diodes with perovskite luminophores have great potential in next-generation displays because of their exceptional color purity with narrow emission bandwidth, broadband color tunability, and solution processability. However, their low luminescent efficiency is a critical drawback. Here, we report the first demonstration of a multicolor, large-area, perovskite display, which can be made flexible by using an optimized perovskite emissive layer sandwiched between inorganic metal oxide charge transport layers, all of which are coated via a facile solution process. We show that advanced interfacial engineering, especially the energy level alignment at the interface, plays a vital role in determining the device performance because of its effects on charge injection, transport, and recombination. These devices exhibit maximum current and power efficiencies of 74.25 cd A−1 and 89.72 lm/w for green emission, 21.40 cd A−1 and 25.84 lm/w for red emission, and 15.21 cd A−1 and 15.84 lm/w for blue emission, respectively. Furthermore, with the introduction of inorganic charge transport layers, these devices exhibit high environmental stability, and the encapsulated devices have operating lifetimes exceeding 450 h with an initial brightness of 1000 cd/m2.",
keywords = "Electron injection layer, Hole transport layer, Light emitting diode, Perovskite",
author = "Yusoff, {A. R.B.M.} and Gavim, {A. E.X.} and Macedo, {A. G.} and {da Silva}, {W. J.} and Schneider, {F. K.} and {Mat Teridi}, {Mohd Asri}",
year = "2018",
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TY - JOUR

T1 - High-efficiency, solution-processable, multilayer triple cation perovskite light-emitting diodes with copper sulfide–gallium–tin oxide hole transport layer and aluminum-zinc oxide–doped cesium electron injection layer

AU - Yusoff, A. R.B.M.

AU - Gavim, A. E.X.

AU - Macedo, A. G.

AU - da Silva, W. J.

AU - Schneider, F. K.

AU - Mat Teridi, Mohd Asri

PY - 2018/12/1

Y1 - 2018/12/1

N2 - Light-emitting diodes with perovskite luminophores have great potential in next-generation displays because of their exceptional color purity with narrow emission bandwidth, broadband color tunability, and solution processability. However, their low luminescent efficiency is a critical drawback. Here, we report the first demonstration of a multicolor, large-area, perovskite display, which can be made flexible by using an optimized perovskite emissive layer sandwiched between inorganic metal oxide charge transport layers, all of which are coated via a facile solution process. We show that advanced interfacial engineering, especially the energy level alignment at the interface, plays a vital role in determining the device performance because of its effects on charge injection, transport, and recombination. These devices exhibit maximum current and power efficiencies of 74.25 cd A−1 and 89.72 lm/w for green emission, 21.40 cd A−1 and 25.84 lm/w for red emission, and 15.21 cd A−1 and 15.84 lm/w for blue emission, respectively. Furthermore, with the introduction of inorganic charge transport layers, these devices exhibit high environmental stability, and the encapsulated devices have operating lifetimes exceeding 450 h with an initial brightness of 1000 cd/m2.

AB - Light-emitting diodes with perovskite luminophores have great potential in next-generation displays because of their exceptional color purity with narrow emission bandwidth, broadband color tunability, and solution processability. However, their low luminescent efficiency is a critical drawback. Here, we report the first demonstration of a multicolor, large-area, perovskite display, which can be made flexible by using an optimized perovskite emissive layer sandwiched between inorganic metal oxide charge transport layers, all of which are coated via a facile solution process. We show that advanced interfacial engineering, especially the energy level alignment at the interface, plays a vital role in determining the device performance because of its effects on charge injection, transport, and recombination. These devices exhibit maximum current and power efficiencies of 74.25 cd A−1 and 89.72 lm/w for green emission, 21.40 cd A−1 and 25.84 lm/w for red emission, and 15.21 cd A−1 and 15.84 lm/w for blue emission, respectively. Furthermore, with the introduction of inorganic charge transport layers, these devices exhibit high environmental stability, and the encapsulated devices have operating lifetimes exceeding 450 h with an initial brightness of 1000 cd/m2.

KW - Electron injection layer

KW - Hole transport layer

KW - Light emitting diode

KW - Perovskite

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