This project aims to investigate the concepts and strategies required to produce electrically injected semiconductor nanowire lasers by understanding light interaction in nanowires, designing appropriate structures to inject current, engineer the optical profile and developing nano-fabrication technologies. Electrically operated nanowire lasers would enable practical applications in nanophotonics.

Flexible GaN for applications in wearable and flexible electronics.

In this project, we aim to demonstrate lasing in a bottom-up metasurface device supporting a perturbed symmetry-protected, quasi-BIC mode. The unit cell of the metasurface consists of a pair of InP nanosheet structures that are grown with the selective area epitaxy technique. 

Semiconductor nanowires are emerging nano-materials with substantial opportunities for novel photonic and quantum device applications. This project aims at developing a new generation of high performance NW based photodetectors for a wide range of applications.

While there have been numerous demonstrations of planar growth of III-V materials on Si substrates, growing III-V nanostructures directly on Si is not a trivial task. In this project, we aim to demonstrate the direct growth of InP/InAsP light-emitting nanostructures on Si substrates by engineering the III-V/Si interfacial energy. 

This project aims to investigate the growth of III-V semiconductors on pre-patterned nanotemplates. By using different shapes and geometries, it is envisaged that these nanostructures will provide novel architectures for advanced, next generation optoelectronic devices.

Bottom-up fabrication of lasers via epitaxial growth has been emerging as a promising alternative to the conventional top-down fabrication methods. In this project, we aim to demonstrate electrically-injected lasing in InP/InAsP multi-quantum well micro-ring cavities that are grown by the selective area epitaxy technique.

In this project, we aim to explore PT-symmetric lasing in III-V semiconductor micro-cavity lasers that are epitaxially grown on their substrates, free from any etching-induced damage. In particular, we aim to demonstrate performance improvements by exploiting some of the unique features of bottom-up grown laser cavities.

In this project we aim to design and demonstrate  III-V compound semiconductor based quantum well nanowire light emitting devices with wavelength ranging from 1.3 to 1.6 μm for optical communication applications.

This project aims to develop high efficiency, cost-effective III-V semiconductor-perovskite tandem solar cells which are flexible and lightweight, while achieving excellent device stability.