Scalable production of alpha-CsPbI3 perovskite nanocrystals for solar cells and LEDs
Overview
Alpha-CsPbI3 perovskite nanocrystals (PNCs) are promising nanomaterials for making flexible, light-weight, transparent solar cells and LEDs. However, its production is not scalable (<5ml at a time). This invention allows low-cost production of alpha-CsPbI3 PNCs at hundreds of mls scale.
Technical name of innovation
Scalable production of alpha-CsPbI3 perovskite nanocrystals
Commercialisation opportunities
N.A.
Problem addressed
The expensive and limited scalability of producing alpha-CsPbI3 perovskite nanocrystals - a key ingredient to next generation solar cells and LEDs for energy efficiency.
Innovation
- A simple mixing of two precursor solutions that leads to reproducible production of nanoparticles of high quality (Absolute photoluminescence quantum yield of 83%)
Key impact
- Silicon-based solar cells have limited uses due to its heavy weight, rigidity and non-transparency, hence takes up precious land. Alpha CsPbI3 PNCs can enable light-weight, flexible, transparent solar cells as films to be coated on curved surfaces (e.g., on top of a car), windows without significantly imapcting the function of the coated object.
Award
- 48th International Exhibition of Inventions Geneva, Gold Medal
Patent
- Provisional patent application
The Chinese University of Hong Kong (CUHK)
Founded in 1963, The Chinese University of Hong Kong (CUHK) is a forward-looking comprehensive research university with a global vision and a mission to combine tradition with modernity, and to bring together China and the West. CUHK teachers and students hail from all around the world. Four Nobel laureates are associated with the university, and it is the only tertiary institution in Hong Kong with recipients of the Nobel Prize, Turing Award, Fields Medal and Veblen Prize sitting as faculty in residence. CUHK graduates are connected worldwide through an extensive alumni network. CUHK undertakes a wide range of research programmes in many subject areas, and strives to provide scope for all academic staff to undertake consultancy and collaborative projects with industry.
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