Hexagonal transition-metal chalcogenide nanoflakes with pronounced lateral quantum confinement

Miro P, Han JH, Cheon J, Heine T (2014)

Publication Type: Journal article

Publication year: 2014

Journal

Angewandte Chemie International Edition Wiley

Book Volume: 53

Pages Range: 12624-12628

Journal Issue: 46

DOI: 10.1002/anie.201404704

Abstract

Transition-metal chalcogenide (TMC) nanoflakes of composition MX2 (where M = Ti, Zr and Hf; X = S and Se) crystallize preferentially in equilateral hexagons and exhibit a pronounced lateral quantum confinement. The hexagonal shape of octahedral (1T) TMC nanoflakes is the result of charge localization at the edges/vertices and the resulting Coulomb repulsion. Independent of their size, all nanoflakes have the MnX2n-2 stoichiometry and thus an unoxidized metal center which results in dopant states. These states become relevant for small nanoflakes and lead to metallic character, but for larger nanoflakes (> 6 nm) the 2D monolayer properties dominate. Finally, coordination of Lewis bases at the nanoflake edges has no significant effect on the electronic structure of these species confirming the viability of colloidal synthetic approaches.

Involved external institutions

Jacobs University Bremen gGmbH DE Germany (DE) Yonsei University KR Korea, Republic of (KR)

How to cite

APA:

Miro, P., Han, J.H., Cheon, J., & Heine, T. (2014). Hexagonal transition-metal chalcogenide nanoflakes with pronounced lateral quantum confinement. Angewandte Chemie International Edition, 53(46), 12624-12628. https://doi.org/10.1002/anie.201404704

MLA:

Miro, Pere, et al. "Hexagonal transition-metal chalcogenide nanoflakes with pronounced lateral quantum confinement." Angewandte Chemie International Edition 53.46 (2014): 12624-12628.

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