Quantitative Control in Single Atom Doping for Solotronic TiO2 Nanocrystals
Doping is a powerful and effective way to alter the electronic, optical, and structural properties of an intrinsic semiconductor. However, the precise control over the dopant concentration in semiconductor nanocrystals is a major challenge. In the extreme case, a single impurity atom in the nanocrystal gives rise to 'solotronic' nanocrystals that are predicted to behave as quantum information storage devices with high precision, efficiency, and fidelity. The study of solotronic nanocrystals has the potentiality to open a new avenue for quantum information storage and processing. In our group, we developed a unique method to control the thermodynamic ion diffusion of cobalt into TiO2 nanocrystals. The result demonstrates homogeneous cobalt ions doping with unprecedented control. The control over the doping process is convincing toward single metal ion doping. In this presentation, synthesize, characterization, quantitative control doping, and the properties of cobalt-doped nanocrystals will be presented.
Mia, Shahzahan, "Quantitative Control in Single Atom Doping for Solotronic TiO2 Nanocrystals" (2020). IdeaFest. 52.