Lithium related deep and shallow acceptors in Li-doped ZnO nanocrystals

Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Peer-Review

Autoren

  • C. Rauch
  • W. Gehlhoff
  • M. R. Wagner
  • E. Malguth
  • G. Callsen
  • R. Kirste
  • B. Salameh
  • A. Hoffmann
  • S. Polarz
  • Y. Aksu
  • M. Driess

Externe Organisationen

  • Technische Universität Berlin
  • Aalto University
  • Tafila Technical University (TTU)
  • Universität Konstanz
Forschungs-netzwerk anzeigen

Details

OriginalspracheEnglisch
Aufsatznummer024311
FachzeitschriftJournal of applied physics
Jahrgang107
Ausgabenummer2
Frühes Online-Datum27 Jan. 2010
PublikationsstatusVeröffentlicht - 2010
Extern publiziertJa

Abstract

We study the existence of Li-related shallow and deep acceptor levels in Li-doped ZnO nanocrystals using electron paramagnetic resonance (EPR) and photoluminescence (PL) spectroscopy. ZnO nanocrystals with adjustable Li concentrations between 0% and 12% have been prepared using organometallic precursors and show a significant lowering of the Fermi energy upon doping. The deep Li acceptor with an acceptor energy of 800 meV could be identified in both EPR and PL measurements and is responsible for the yellow luminescence at 2.2 eV. Additionally, a shallow acceptor state at 150 meV above the valence band maximum is made responsible for the observed donor-acceptor pair and free electron-acceptor transitions at 3.235 and 3.301 eV, possibly stemming from the formation of Li-related defect complexes acting as acceptors.

ASJC Scopus Sachgebiete

Zitieren

Lithium related deep and shallow acceptors in Li-doped ZnO nanocrystals. / Rauch, C.; Gehlhoff, W.; Wagner, M. R. et al.
in: Journal of applied physics, Jahrgang 107, Nr. 2, 024311, 2010.

Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Peer-Review

Rauch, C, Gehlhoff, W, Wagner, MR, Malguth, E, Callsen, G, Kirste, R, Salameh, B, Hoffmann, A, Polarz, S, Aksu, Y & Driess, M 2010, 'Lithium related deep and shallow acceptors in Li-doped ZnO nanocrystals', Journal of applied physics, Jg. 107, Nr. 2, 024311. https://doi.org/10.1063/1.3275889
Rauch, C., Gehlhoff, W., Wagner, M. R., Malguth, E., Callsen, G., Kirste, R., Salameh, B., Hoffmann, A., Polarz, S., Aksu, Y., & Driess, M. (2010). Lithium related deep and shallow acceptors in Li-doped ZnO nanocrystals. Journal of applied physics, 107(2), Artikel 024311. https://doi.org/10.1063/1.3275889
Rauch C, Gehlhoff W, Wagner MR, Malguth E, Callsen G, Kirste R et al. Lithium related deep and shallow acceptors in Li-doped ZnO nanocrystals. Journal of applied physics. 2010;107(2):024311. Epub 2010 Jan 27. doi: 10.1063/1.3275889
Rauch, C. ; Gehlhoff, W. ; Wagner, M. R. et al. / Lithium related deep and shallow acceptors in Li-doped ZnO nanocrystals. in: Journal of applied physics. 2010 ; Jahrgang 107, Nr. 2.
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title = "Lithium related deep and shallow acceptors in Li-doped ZnO nanocrystals",
abstract = "We study the existence of Li-related shallow and deep acceptor levels in Li-doped ZnO nanocrystals using electron paramagnetic resonance (EPR) and photoluminescence (PL) spectroscopy. ZnO nanocrystals with adjustable Li concentrations between 0% and 12% have been prepared using organometallic precursors and show a significant lowering of the Fermi energy upon doping. The deep Li acceptor with an acceptor energy of 800 meV could be identified in both EPR and PL measurements and is responsible for the yellow luminescence at 2.2 eV. Additionally, a shallow acceptor state at 150 meV above the valence band maximum is made responsible for the observed donor-acceptor pair and free electron-acceptor transitions at 3.235 and 3.301 eV, possibly stemming from the formation of Li-related defect complexes acting as acceptors.",
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note = "Funding Information: We thank the Grillo-group and Grillo Zinkoxid GmbH for financial support. The Deutsche Forschungsgemeinschaft (DFG) is acknowledged for funding (SFB 787; Project Nos. PO780/4-1 and DR 226/16-1). A. Orlov is acknowledged for assistance in the synthesis of the Li-containing ZnO materials. M.R.W. and C.R. acknowledge an Ernst-von-Siemens scholarship and a Marie Curie ITN fellowship, respectively. B.S. acknowledges an Erasmus Mundus External Cooperation scholarship and support by the DFG (Project No. GE 709/11-1).",
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Download

TY - JOUR

T1 - Lithium related deep and shallow acceptors in Li-doped ZnO nanocrystals

AU - Rauch, C.

AU - Gehlhoff, W.

AU - Wagner, M. R.

AU - Malguth, E.

AU - Callsen, G.

AU - Kirste, R.

AU - Salameh, B.

AU - Hoffmann, A.

AU - Polarz, S.

AU - Aksu, Y.

AU - Driess, M.

N1 - Funding Information: We thank the Grillo-group and Grillo Zinkoxid GmbH for financial support. The Deutsche Forschungsgemeinschaft (DFG) is acknowledged for funding (SFB 787; Project Nos. PO780/4-1 and DR 226/16-1). A. Orlov is acknowledged for assistance in the synthesis of the Li-containing ZnO materials. M.R.W. and C.R. acknowledge an Ernst-von-Siemens scholarship and a Marie Curie ITN fellowship, respectively. B.S. acknowledges an Erasmus Mundus External Cooperation scholarship and support by the DFG (Project No. GE 709/11-1).

PY - 2010

Y1 - 2010

N2 - We study the existence of Li-related shallow and deep acceptor levels in Li-doped ZnO nanocrystals using electron paramagnetic resonance (EPR) and photoluminescence (PL) spectroscopy. ZnO nanocrystals with adjustable Li concentrations between 0% and 12% have been prepared using organometallic precursors and show a significant lowering of the Fermi energy upon doping. The deep Li acceptor with an acceptor energy of 800 meV could be identified in both EPR and PL measurements and is responsible for the yellow luminescence at 2.2 eV. Additionally, a shallow acceptor state at 150 meV above the valence band maximum is made responsible for the observed donor-acceptor pair and free electron-acceptor transitions at 3.235 and 3.301 eV, possibly stemming from the formation of Li-related defect complexes acting as acceptors.

AB - We study the existence of Li-related shallow and deep acceptor levels in Li-doped ZnO nanocrystals using electron paramagnetic resonance (EPR) and photoluminescence (PL) spectroscopy. ZnO nanocrystals with adjustable Li concentrations between 0% and 12% have been prepared using organometallic precursors and show a significant lowering of the Fermi energy upon doping. The deep Li acceptor with an acceptor energy of 800 meV could be identified in both EPR and PL measurements and is responsible for the yellow luminescence at 2.2 eV. Additionally, a shallow acceptor state at 150 meV above the valence band maximum is made responsible for the observed donor-acceptor pair and free electron-acceptor transitions at 3.235 and 3.301 eV, possibly stemming from the formation of Li-related defect complexes acting as acceptors.

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