Metal Halide Perovskites: Promising Materials for Light-Emitting Diodes
Source abstract
Abstract
Metal halide perovskites have shown excellent optoelectronic properties, including high photoluminescence quantum yield, tunable emission wavelengths, narrow full-width at half-maximums and a low-cost, solution-processed fabrication, which make it exhibit great potential as emission-layer materials of light-emitting diodes. With the joint efforts of researchers from different disciplines, there has been a significant progress in the improvement in the external quantum efficiency (EQE) and stability of perovskite light-emitting diodes (PeLEDs) in recent years, especially in green PeLEDs with EQEs over 30%. However, their operational stability lags behind other commercial organic and chalcogenide quantum dot emitters, limiting their practical application. In this review, we first introduce the basic device structure of PeLEDs, as well as the factors influencing the EQE and stability of PeLEDs. Secondly, the development of lead-based and lead-free PeLEDs are summarized systematically. Thirdly, challenges of PeLEDs are discussed in detail, including low the EQE of blue PeLEDs, poor device stability and EQE roll-off. Finally, some suggestions and perspectives for future research directions for PeLEDs are proposed.
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Research context
OpenAlex topics: Perovskite Materials and Applications · Quantum Dots Synthesis And Properties · Organic Light-Emitting Diodes Research
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
College of Electronic Information and Optical Engineering, Taiyuan University of Technology, Taiyuan 030024, China
Department of Materials Science and Engineering, City University of Hong Kong, Kowloon, Hong Kong 999077, China
Funding
National Natural Science Foundation of China · Shanxi Basic Research Program Project
References (100+)
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