Boosting Efficiency in Polycrystalline Metal Halide Perovskite Light-Emitting Diodes
Source abstract
Abstract
Metal halide perovskites (MHPs) have outstanding photophysical properties and are therefore being evaluated as next-generation light emitters. Within just a few years, the efficiencies of polycrystalline perovskite light-emitting diodes (PeLEDs) have been drastically improved and are catching up with those of conventional organic LEDs. The electroluminescence efficiency of polycrystalline PeLEDs has been limited by shortcomings such as limited outcoupling efficiency, charge imbalance in MHP emitting layers, difficulty controlling surface morphology, small exciton binding energy at room temperature, and nonradiative recombination at defect sites. In this Perspective, we focus on promising strategies such as optical engineering, charge balance control, morphological and nanograin engineering, and chemical modification to overcome these shortcomings and suggest future directions for research to further improve the efficiencies of polycrystalline PeLEDs.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Perovskite Materials and Applications · Organic Light-Emitting Diodes Research · Quantum Dots Synthesis And Properties
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Department of Materials Science and Engineering, BK21 PLUS SNU Materials Division for Educating Creative Global Leaders Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
Research Institute of Advanced Materials, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
Department of Materials Science and Engineering, Pohang University of Science and Technology (POSTECH), 77 Cheongam-Ro, 10 Nam-Gu, Pohang, Gyeongbuk 37673, Republic of Korea
Institute of Engineering Research, Nano System Institute (NSI), Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
Funding
National Research Foundation of Korea
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