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Journal of Nanoparticle Research

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01.05.2016 | Research Paper

Competing effects between intrinsic and extrinsic defects in pure and Mn-doped ZnO nanocrystals

verfasst von: Thomas Ruf, Sergej Repp, Joanna Urban, Ralf Thomann, Emre Erdem

Erschienen in: Journal of Nanoparticle Research | Ausgabe 5/2016

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Abstract

Nano-sized ZnO doped with transition metals is one of the most promising candidates in the field of diluted magnetic semiconductors unifying ferromagnetic and semiconductor properties. Promising is the exploitation of the magnetic spin of the electron and by that the application in spintronics. As the mechanism of spin coupling is still controversial, insight into the coexistence and interaction of intrinsic and extrinsic effects is vital for further technological progress. We report on the synthesis of a set of nano-sized Zn_1−xMn_xO samples with a nominal concentration of x = 0.000005–0.03 and structural (XRD, TEM, and AFM), as well as electronic (PL, UV–Vis, FTIR, and EPR) investigations. In this contribution, possible interaction effects were summarized in terms of Mn doping and size. PL quenching after doping was also discussed as another aspect for the interrelations of the defects.

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Titel: Competing effects between intrinsic and extrinsic defects in pure and Mn-doped ZnO nanocrystals
verfasst von: Thomas Ruf
Sergej Repp
Joanna Urban
Ralf Thomann
Emre Erdem
Publikationsdatum: 01.05.2016
Verlag: Springer Netherlands
Erschienen in: Journal of Nanoparticle Research / Ausgabe 5/2016
Print ISSN: 1388-0764
Elektronische ISSN: 1572-896X
DOI: https://doi.org/10.1007/s11051-016-3408-z

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