Spatially Resolved Dynamics of Cobalt Color Centers in ZnO Nanowires

Plass CT, Bonino V, Ritzer M, Jager LR, Rey-Bakaikoa V, Hafermann M, Segura-Ruiz J, Martinez-Criado G, Ronning C (2023)

Publication Type: Journal article

Publication year: 2023

Journal

Advanced Science Wiley Open Access

Book Volume: 10

Article Number: 2205304

Journal Issue: 1

DOI: 10.1002/advs.202205304

Abstract

The dynamics of color centers, being a promising quantum technology, is strongly dependent on the local environment. A synergistic approach of X-ray fluorescence analysis and X-ray excited optical luminescence (XEOL) using a hard X-ray nanoprobe is applied. The simultaneous acquisition provides insights into compositional and functional variations at the nanoscale demonstrating the extraordinary capabilities of these combined techniques. The findings on cobalt doped zinc oxide nanowires show an anticorrelation between the band edge emission of the zinc oxide host and the intra-3d cobalt luminescence, indicating two competing recombination paths. Moreover, time-resolved XEOL measurements reveal two exponential decays of the cobalt luminescence. The fast and newly observed one can be attributed to a recombination cascade within the cobalt atom, resulting from direct excitation. Thus, this opens a new fast timescale for potential devices based on cobalt color centers in ZnO nanowires in photonic circuits.

Involved external institutions

European Synchrotron Radiation Facility (ESRF) FR France (FR) Friedrich-Schiller-Universität Jena DE Germany (DE)

How to cite

APA:

Plass, C.T., Bonino, V., Ritzer, M., Jager, L.R., Rey-Bakaikoa, V., Hafermann, M.,... Ronning, C. (2023). Spatially Resolved Dynamics of Cobalt Color Centers in ZnO Nanowires. Advanced Science, 10(1). https://doi.org/10.1002/advs.202205304

MLA:

Plass, Christian T., et al. "Spatially Resolved Dynamics of Cobalt Color Centers in ZnO Nanowires." Advanced Science 10.1 (2023).

BibTeX: Download