Quantum Dot (QD) is a technical solution that can be found in televisions, laptops or tablets. Among other things, it is used in LCD screens to improve colour reproduction. With the Quantum Dot it is possible to expand the colour palette. Older colour TVs only display 33% of the colours that the human eye can recognise. Modern receivers with QD technology, on the other hand, make it possible to increase the colour palette to 57% of what the human eye can see. The Quantum dots themselves are also called nanocrystals because of their small size and cannot be seen with the naked eye. However, they make the image displayed on the screen appear more vivid, clearer and richer in colour.

This is a bilateral, currently informal yet, collaboration between the teams of CNR Istituto Nanoscienze in Pisa led by prof. Lucia Sorba and Department of Experimental Physics of Wroclaw Tech (prof. Grzegorz Sęk), in the subject of morphological and structural vs electronic and optical properties of quantum dot in nanowire structures made of InAsP/InP materials. The nanostructures are fabricated in Pisa by obtained by the vapor-liquid-solid growth techniques. in different crystalograhic systems, nanowire and QD sizes and compositions, and characterized there structurally. Then the nanomaterials are investigated by means of various optical spectroscopy methods in Wrocław, focusing on the influence of the structural and morphological modifications on the QD electronic and optical properties. The goal is to develop original nanostructures as efficient single photon sources on the telecommunication spectral range and prove their application potential when compared to the existing solutions.

It is still a preliminary stage research focused on material development - optimization of the nanowires density and QD properties, especially the emission intensity and wavelength range towards QD-based single photon sources in the telecom.