ECCS-EPSRC Superlattice Architectures for Efficient and Stable Perovskite LEDs

Lead Research Organisation: University of Oxford
Department Name: Oxford Physics

Abstract

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Description We have been investigating and developing perovskite light emitting diodes (LEDs) fabricated via vapour phase deposition. Our main technical target is to realise "super-lattices" which are multiple stacks of very thin layers of semiconductor materials with different band gaps. This should result in spatial confienemnt of the charge carriers in the emissive layer, and a significant enhancement in emission efficiency. We have successfuly deposited layered phase perovskites, highly luminescnent bulk or 3D perovskites, and started investigating the growth of 3D perovskites on layered phase 2D perovskites.
Exploitation Route Perovskite LEDs are already competitively efficient, but as of yet are not competitively stable. Our work will enable low drive voltage, highly stable operation of perovskite LEDs and is likely to be taken forward following the end of the project by a number of potential companies within the display industry. These range from early stage companies, like Helio Display Materials, through to elecrtonic giants, such as Samsung.
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