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About

Dr. Leng's research group at the Department of Applied Physics, PolyU focuses on the chemical design, synthesis, physics and Nano&Micro device applications of low-dimensional materials such as organic-inorganic hybrid 2D materials.  

What's New

  • Our recent research work about surface octahedral tilt in 2D perovskites has been published (Nature Communications, 13, 138 (2022)).

  • Our paper of Molecularly-thin, two-dimensional all-organic perovskites has been published (Science, 384, 60-66 (2024)). 

  • Our hot work of ​ "Switchable planar chirality and spin texture in highly ordered ferroelectric hybrid perovskite domains" has been published (Nature Communications, 15, 10221 (2024)). 

  • Our work of ​ "Phonon Driven Ferroelectricity and Raman Active Modes in Hybrid Organic-Inorganic Perovskites" has been published as AM Rising Star series (Advanced Materials, 2419685, (2025)). 

PhD student's experimental operation in our Lab

Research 

  1. Quantum confined 2D systems

2. Low dimensional physics

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  • Photodetector

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  • Opto-FET device

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3. Charge, energy and phonon dynamics

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4. Atomic-Scale Microscopy

  • Scanning Tunneling Microscope

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  • qPlus AFM

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Exploring how the quasi-2D physics of hybrid materials is modulated by compositional and dimensional engineering helps to understand their intrinsic photophysical property and optimize device performance.   

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© 2020 Kathy Kai Leng's Group All rights reserved

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