Tuning photoluminescence properties of alkaline-earth oxide nanoparticles by site-selective functionalization and doping

Sushko PV, McKenna KP, Shluger AL, Diwald O (2009)

Publication Language: English

Publication Status: Published

Publication Type: Conference contribution, Conference Contribution

Publication year: 2009

Book Volume: 25

Pages Range: 131-139

Conference Proceedings Title: ECS Transactions, Volume 25, Number 9

Event location: Vienna AT

ISBN: 9781566777469

DOI: 10.1149/1.3211170

Open Access Link: https://iopscience.iop.org/article/10.1149/1.3211170/meta

Abstract

We investigate theoretically the effects of isovalent substitutional doping on the optical properties of cubic MgO nanoparticles. The Ca, Sr, and Ba impurities preferentially occupy the three-coordinated cation sites and counterbalance the lattice strain induced by the finite size of the host particles. The lowest optical absorption band shifts to the lower energies as the radius of the substitutional species increases. Two types of nearly iso-energetic triplet excitons are found: the symmetric and asymmetric configurations correspond to the hole component being delocalized over three four-coordinated anion and localized on a single anion, respectively. The photoluminescence energies strongly depend on the exciton configuration and can be controlled by the judicious choice of the dopans

Authors with CRIS profile

Oliver Diwald Professur für Partikelsynthese

Involved external institutions

University College London (UCL) GB United Kingdom (GB)

How to cite

APA:

Sushko, P.V., McKenna, K.P., Shluger, A.L., & Diwald, O. (2009). Tuning photoluminescence properties of alkaline-earth oxide nanoparticles by site-selective functionalization and doping. In ECS - The Electrochemical Society (Eds.), ECS Transactions, Volume 25, Number 9 (pp. 131-139). Vienna, AT.

MLA:

Sushko, P. V., et al. "Tuning photoluminescence properties of alkaline-earth oxide nanoparticles by site-selective functionalization and doping." Proceedings of the Physics and Chemistry of Luminescence Materials, W. M. Yen Memorial Symposium - 216th ECS Meeting, Vienna Ed. ECS - The Electrochemical Society, 2009. 131-139.

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