Recent Advances in Metal Halide-Based Perovskite Light-Emitting Diodes
| Autor: | Dinesh Kabra, Dhritiman Gupta, Naresh K. Kumawat |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
Materials science
Lead-Free Halide Solar-Cells 02 engineering and technology Inorganic Heterostructure 010402 general chemistry 01 natural sciences law.invention Electronic-Properties PEDOT:PSS Luminous-Efficiency law Solar cell Quantum Dots Perovskites High-Efficiency Photoluminescence Perovskite (structure) Electroluminescent Diodes business.industry Optical-Properties Hybrid Perovskite 021001 nanoscience & nanotechnology Grain size 0104 chemical sciences General Energy Semiconductor Optoelectronics Structural Property Charge carrier Crystallite Metal Halides 0210 nano-technology business Light-Emitting Diodes |
| Zdroj: | IndraStra Global. |
| ISSN: | 2381-3652 |
| DOI: | 10.1002/ente.201700356 |
| Popis: | Metal-halide perovskite materials are crystalline semiconductors that can be processed at room temperature using solution-processible deposition techniques. In only a few years, perovskite-based solar cell efficiencies have seen a huge increase from 3% to 22.1%. These direct-bandgap materials are potential candidates for other optoelectronic de-vice applications such as photodetectors, light-emitting transistors, and light-emitting diodes. In this Review, we present the current state-of-the-art in the research and development of perovskite light-emitting diodes (PeLEDs) based on metal halide perovskite semiconductors with an emphasis on size of crystallites and its effects on optical properties, device architectures, and Pe-LED performance parameters. A uniform pinhole-free morphology with small grain size is essential for high-performance PeLEDs. For this purpose, a p-i-n type device architecture with a p-type poly(3,4-ethylenedioxythiophone}:polystyrene sulfonate (PEDOT:PSS) layer was found to be more-suitable than the n-i-p type. In PeLEDs based on hulk-phase perovskites, the average size of the crystallites is in the range 100-500 nm. The efficiency can be improved further by using perovskite nanoparticles with size |
| Databáze: | OpenAIRE |
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