Credit: Figure source: DOI number: 10.1038/s41467-021-21522-8
Energy-efficient light-emitting diodes (LEDs) have been used in our everyday life for many decades. But the quest for better LEDs, offering both lower costs and brighter colours, has recently drawn scientists to a material called perovskite. A recent joint-research project co-led by the scientist from
City University of Hong Kong (CityU) has now developed a 2D perovskite material for the most efficient LEDs.
From household lighting to mobile phone displays, from pinpoint lighting needed for endoscopy procedures to light source to grow vegetables in Space, LEDs are everywhere. Yet current high-quality LEDs still need to be processed at high temperatures and using elaborated deposition technologies which make their production cost expensive.
Producing highly efficient LEDs based on 2D perovskite films asiaresearchnews.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from asiaresearchnews.com Daily Mail and Mail on Sunday newspapers.
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IMAGE: Fermions with different spins (indicated by arrows) behave like bosons in three dimensions when the number of spin components increases. view more
Credit: HKUST
In the text book of quantum mechanics, it was introduced that bosons and fermions, two types of elementary particles that build the universe, behave in a drastically different way. For example, bosons can share the same quantum state while fermions of the same kind cannot but fill available quantum states one by one.
Nevertheless, modern developments in condensed matter physics and high energy physics have suggested that the boundary between bosons and fermions can be blurred. One of such examples is a gas of multi-flavor fermions, each identified by a different spin (indicated by arrows in Figure), in which any two flavors interact with one another by the same interaction. Multi-flavor fermions with such a SU(N) symmetry are expected to behave like an ensemble of spinless bosons when the numbe