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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 50: Poster Session III
CPP 50.33: Poster
Dienstag, 17. März 2020, 14:00–16:00, P1C
Fluorescence Quenching of Copper Indium Sulfide/Zinc sulphide Quantum Dot-Dye Assembly — •Abey Issac1, Sumesh Sofin R.G1, and Osama K. Abou-Zied2 — 1Department of Physics, College of Science, Sultan Qaboos University, Muscat 123, OMAN — 2Department of Chemistry, College of Science, Sultan Qaboos University, Muscat 123, OMAN
Deep understanding of electronic transitions in semiconductor quantum dots (QDs) are crucial for the realization of QD-based applications. Though enormous works have been reported on cadmium based QDs such as CdSe or CdS at ensemble and single particle level, current research interest is devoted to cadmium free QDs due to the carcinogenic activity of cadmium. In this work, we study the fluorescence quenching of Copper Indium Sulfide/Zinc sulfide core/shell QDs (CIS/ZnS) in QD-dye complexes. Time resolved spectroscopy techniques such as fluorescence decay (ns) and fluorescence up conversion (sub ps) are employed in this work. Different quenching pathways are identified in this QD-Dye assembly.