Precursor reaction kinetics control compositional grading and size of CdSe 1−x S x nanocrystal heterostructures

Year: 2019

Type: article

Abstract: = 2.4) display two longitudinal optical phonon modes with composition dependent frequencies characteristic of the alloy microstructure. When one precursor is more reactive than the other, its conversion reactivity and mole fraction control the number of nuclei, the final nanocrystal size at full conversion, and the elemental composition. The utility of controlled reactivity for adjusting alloy microstructure is discussed.

Source: Chemical Science

DOI: 10.1039/c9sc00989b

Authors: Leslie S. Hamachi, Haoran Yang, Ilan Jen-La Plante, Natalie Saenz, Kevin Qian, Michael P. Campos, Gregory T. Cleveland, Iva Rreza, Aisha Oza, Willem Walravens, Emory M. Chan, Zeger Hens, Andrew C. Crowther, Jonathan S. Owen

Institutions: Columbia University, Lawrence Berkeley National Laboratory, Molecular Foundry, Barnard College, Ghent University

Language: English

Topic: Quantum Dots Synthesis And Properties

Subfield: Materials Chemistry

Field: Materials Science

Domain: Physical Sciences

Open Access status: diamond

Funders: National Science Foundation, U.S. Department of Energy, Simons Foundation, Barnard College, European Commission, National Institutes of Health, Office of Science, Office of Energy Efficiency and Renewable Energy, Fu Foundation School of Engineering and Applied Science, Multidisciplinary University Research Initiative, National Institute of General Medical Sciences, Division of Chemistry, Basic Energy Sciences, Building Technologies Office, Office of Energy Efficiency, Army Research Office, Army Research Laboratory

OpenAlex ID: W2948409131