Research in NST

1. Nanostructured Materials and Synthesis

Research on nanomaterials is focussed on understanding how specific material properties depend upon size, morphology, and dimensionality so that we can tailor the materials to have the desired properties for a range of devices. Our group focuses on the synthesis and characterization of 0-D nanostructures (such as II-VI and III-V semiconducting QDs, and Ge, Si, nano particles) and 1-D nanostructures (transition metal sulphides/oxides, binary metal oxides) by developing novel synthetic strategies on the basis of solution processes such as hydrothermal and hot injection techniques. Our group also develops facile vapour transport processes to achieve control over crystalline orientation, morphology, positions of 1D nanotubes and nanowires (such as CNT, ZnO, VO2, CuO) and 2-D layered materials (such as graphene, transition metal dichalcogenides) through moderated control of the catalysts and reaction conditions as well as through an understanding of their growth mechanism by employing thermal CVD techniques.

 

QD

Colloidal Quantum Dots: Semiconducting nanostructure having controllable wide range of bandgaps (IR - UV). Target application: solar cell, lighting, bio-imaging, photo-sensor, TFT, etc.

 

 2D

2D Transition Metal Dichalcogenide Crystal: Atomic level mono-layered semiconducting nanostructure with transparency & flexibility, strong light-matter interaction. Target application: flexible/transparent electronics, sensor, solar cell, energy storage, etc

 

 

2. Nano devices and Characterization

We explore the potential applications of nanostructured materials to exploit their unique electronic, optical, optoelectronic, electrochemical, and electromechanical properties. Research on nanostructured devices is highly interdisciplinary because of the different fabrication techniques involved and the different characterization tools that are used. We employ top-down and bottom-up approaches to create unique opportunities for the development of next generation enabling technology based on nanostructured devices. Our group specialises in a variety of devices using low dimensional materials such as CNT-FE, QD Solar Cell, Photodetector, Mechanical Nanogenerator, LIB, Supercapacitor, Diode, Transistor, Memory, and Logic Gate etc. These devices are particularly important in the development of new technology that will be of benefit to society.

 

 Energy Devices

Energy harvesting: Converting environmental energy into electricity by using of functional nano structures.

Energy Storage: Bridging the potential gap between conventional batteries and electrostatic capacitors based on functional nano structures

 

Nano Devices 

Nano Electronic/Optoelectronic Device:  Focused on the investigation of basic electronic transport properties of various semiconducting nanomaterials in terms of scaling effects, surface chemistry effects, and various environmental effects