Nov 05, 2018
(Nanowerk News) Researchers at the Physical and Analytical Chemistry department of the Universitat Jaume I (UJI) of Castellón, Spain, have taken part in the design of semiconductor nanoplatelets with a broadened range of colours to improve LCD and LED screens thanks to an international collaboration headed by the University of Ghent.
The results of this research, in which the ICFO-Barcelona and the Italian Technology Institute also took part, has been published in Nano Letters ("Chloride-Induced Thickness Control in CdSe Nanoplatelets").
Physical Chemistry professor at the UJI Juan Ignacio Climente, researcher in this project, explains that the semiconductor structures for optical devices heretofore ‘offered intense and pure purple and green colours, but the output of other colours was lacklustre. With a synthetic innovation, this study has made it possible to broaden the optimal results to yellow, orange and red’.
The joint work by the Quantic Chemistry Group of the UJI, coordinated by professor Juan Ignacio Climente along with the research group of Dr. Iwan Moreels and experts of other European universities, has led to significant progress in the development of semiconductor materials for optic devices.
Specifically, from the Universitat Jaume I, in the words of Climente, ‘we have conducted mechano-quantic calculations that show that the new colours of the light emitted are a result of the nanoplatelet’s greater thickness synthesised by our partners, which offer new knowledge on the unique optic properties of these materials’. ‘The new synthetic route enables the broadening of the traditional thickness (3.5-5.5 layers of atoms) to 8.5 layers’, adds the professor.