WELCOME TO OPTOELECTRONICS AND NANOMATERIALS
RESEARCH PROJECTS
Our Current Focus
Organic-inorganic metal halide perovskite solar cells
Organic-inorganic metal halide perovskite solar cells have attracted lots of attention due to their high efficiency, with the small cell record efficiency of 26.1% equal to that of single crystal Si solar cells (NREL efficiency chart). However, stability of these devices needs further improvements for commercialization. Our research is concerned with studying the stability of perovskite films and devices under different testing protocols (including outdoor testing) for both rigid and flexible devices. We are particularly interested in incorporation of different 2D perovskite materials into 3D/2D perovskite absorber layers for stability enhancement. In general, we aim to understand the processes leading to degradation of performance to develop methods to stabilize the perovskite films and devices and significantly enhance device stability.
Organic-inorganic metal halide light emitting diodes (LEDs)
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One significant potential advantage of organic-inorganic metal halide perovskite materials for LED application is that they simultaneously offer advantages of inorganic materials (high colour purity) and organic materials (solution processable at low temperatures, resulting in low cost). Similar to solar cells, efficiencies have rapidly improved, but the main problem of stability remains. However, stability gap between perovskite LEDs and competing commercial technologies is much wider, with needed improvements of several orders of magnitude to reach stability levels suitable for commercialization. Our research is mainly concerned with studying the performance dependence of LEDs on perovskite composition and device architecture, in an attempt to develop devices with improved stability and elucidate mechanisms leading to stability improvement.
Welcome to our research lab, where we are dedicated to finding innovative solutions for the pressing issue of microplastics pollution. Our team of experts focuses on the development and application of advanced catalytic and photocatalytic degradation methods to address the ever-growing problem of microplastics contamination in our environment. Through our research, we strive to create a cleaner, safer, and more sustainable future for our planet by tackling the challenges associated with plastic waste and promoting the responsible use of these materials. Explore our website to learn more about our work, our team, and the exciting projects we're involved in. Together, we can make a difference in the fight against microplastics pollution.
CONTACT US
Room 314, Physics Department, CYM Building, University of Hong Kong, Pok Fu Lam, Hong Kong.
+852-28597946