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Exploiting Nucleation and Growth in the Synthesis and Electrical Passivation of CdSe Quantum Dots

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The synthesis of CdSe quantum dots (QDs) is usually achieved through reaction of the appropriate precursors in a solution containing weakly adsorbing capping ligands. Here we compare nucleation and growth of CdSe QDs synthesized in hexadecylamine and trioctylphosphine oxide with stearic acid, hexylphosphonic phosphonic acid, or tetradecylphosphonic acid. We show that the nature of the capping ligand dramatically influences nucleation and growth, and can be used to control QD diameter and hence optical properties. We also show how electrical passivation with either ZnS or (Cd, Zn)S influences the size and optical properties of the QDs.
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Keywords: CDSE; CORE/SHELL; GROWTH; NUCLEATION; PASSIVATION; QUANTUM DOTS

Document Type: Research Article

Publication date: 2009-04-01

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  • Science of Advanced Materials (SAM) is an interdisciplinary peer-reviewed journal consolidating research activities in all aspects of advanced materials in the fields of science, engineering and medicine into a single and unique reference source. SAM provides the means for materials scientists, chemists, physicists, biologists, engineers, ceramicists, metallurgists, theoreticians and technocrats to publish original research articles as reviews with author's photo and short biography, full research articles and communications of important new scientific and technological findings, encompassing the fundamental and applied research in all latest aspects of advanced materials.
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