Journal
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
Volume 165, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.mssp.2023.107679
Keywords
Metal oxides; OLEDs; QLEDs; PeLEDs; Electron transport layers; Hole transport layers
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As LEDs dominate the current display industry, it is crucial to focus on the research and development of device structure, fabrication methods, and performance of LEDs. In organic LEDs (OLEDs), quantum dot LEDs (QLEDs), and pervoskite LEDs (PeLEDs), charge transport layers (CTLs) play a vital role in improving device structure and performance. Factors such as chemical stability, thermal stability, charge carrier density, charge carrier mobility, molecular/atomic energy levels, and processability greatly impact the efficiency and performance of LED devices. Metal oxides have shown promise as reliable materials for CTLs, surpassing conventional organic charge transport materials. This paper discusses the application of metal oxides as hole/electron transport layers in different LED architectures and their performance.
As the current era of display world is mostly occupied by solid state light emitting devices (LEDs), research in the development of device structure, fabrication method and performance of the LEDs are the essential fields to be focused. In the case of most promising organic LEDs (OLEDs) as well as rapidly growing quantum dot LEDs (QLEDs) and pervoskite LEDs (PeLEDs), charge transport layers play a crucial role in the improvement of device structure and performance. The chemical stability, thermal stability, charge carrier density, charge carrier mobility, molecular/atomic energy levels and easy processability of the charge transport layers are the important factors that affects the performance and efficiency of LED devices. Compare to the conventionally used organic charge transport materials, inorganic, particularly, metal oxides possessed a satisfactory credential to be a trustworthy material for the application of charge transport layers (CTLs) in organic as well as inorganic LEDs. In the present work, application of metal oxides as hole/electron transport layers, as a better replacement for organic charge transport materials, in different LED architecture and their performance are discussed.
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