Colloidal quantum dots (QDs) offer an alternative approach in detecting infrared light. Taking advantage of the quantum confinement, QDs can be tuned to detect different spectra from visible up to the NIR and SWIR. Furthermore, they can be deposited from solution over large area with low cost techniques such as spin coating.
The main challenge in this technology is surface chemistry of the QDs, governed by interactions between the QD and surface ligands. The student will focus on the investigation of different molecular structures for QD ligands, and their effect on the electrical, optical and morphological properties of QD films. These films will be used for the fabrication of thin-film photodiode detectors, for which a proper energy-band alignment design and optical design will be crucial for the achievement of high performance. The student will be involved in the full fabrication and characterization route, from the ligand exchange and film formation up to the photodiode performance. He / She will receive training on the relevant processing and characterization tools. After a short introduction to the facilities, an independent investigation is expected with the focus on short-term research goals.
Type of project: Combination of internship and thesis
Duration: 6 months
Required degree: Master of Science, Master of Engineering Science
Required background: Chemistry/Chemical Engineering, Materials Engineering, Nanoscience & Nanotechnology
Supervising scientist(s): For further information or for application, please contact: Itai Lieberman (Itai.Lieberman@imec.be) and Epimitheas Georgitzikis (Epimitheas.Georgitzikis@imec.be) and David Cheyns (David.Cheyns@imec.be)
Imec allowance will be provided.