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Physics Seminar

Colloidal Compound Semiconductor Nanocrystals: The Artificial Building Blocks for New-Generation Optoelectronics and Photonics

Speaker: Dr Bo Hou (Cardiff University)
Date: Wednesday 13 May 2020
Time: 15:00
Venue: Zoom

A surge in the developments in nanoscience in recent years heralds new possibilities in the field of compound semiconductors, in particular, the fabrication of high-quality compound semiconductor nanocrystals. Solution-processed nanoscale semiconductors, known as colloidal quantum dots (QDs), is one of the significant growth areas in interdisciplinary field of physics, chemistry, materials science, and electrical engineering for the exploration of fundamental physical properties and new functionalities, and for the creation of unique applications with a view of potential fabrication routes through the design of materials and systems. This talk will select my recent works in lead sulphide (PbS) and Copper-Indium-Zinc-Sulphide (CIZS) QDs to introduce the fascinating development of solution-processed QD optoelectronics and photonics. It contains the systematic investigation of the growth, physicochemical and photoelectric properties of these QDs, as well as the charge transport dynamics and fundamental light-matter interactions in their PV and LED applications. In addition, newly developed QD battery and QD thermoelectric devices will also be briefly discussed.