Structural and Luminescence Features of Lithium-Doped p-Type Film-Like ZnO Nanorods

Title
Structural and Luminescence Features of Lithium-Doped p-Type Film-Like ZnO Nanorods
Authors
홍진표
Keywords
ZnO Nanostructure; Lithium-Dopant; p-Type ZnO; Photoluminescence
Issue Date
2015-06
Publisher
AMER SCIENTIFIC PUBLISHERS
Citation
JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY, v. 15, no. 11, Page. 8679-8683
Abstract
We report the structural and optical characteristics of p-type lithium (Li)-doped ZnO film-like nanostructures prepared by utilizing a simple hydro-thermal method in an aqueous solution at a low temperature (˂90 degrees C). The diameters and densities of the Li-doped ZnO nanostructures were controlled by adjusting the molar concentration. A relatively high molar concentration resulted in hexagonal and flat surface-shaped ZnO nanostructures. In addition, a post-annealing process in the range of 400 to 600 degrees C effectively leads to the incorporation of lithium dopant as an acceptor, resulting in optical p-type behavior. The p-type features of synthesized Li-doped ZnO nanostructures were analyzed using a photoluminescence measurement using a He-Cd laser as an excitation source at 10 K. Closer investigation of the fine donor- and acceptor-bound exciton emission peaks from the low temperature PL spectra revealed the occurrence of several peaks related to free excitons (FX), excitons bound to acceptor (A(0)X), free electron to the acceptor transition peak (FA), and its LO phonon replicas.
URI
http://www.ingentaconnect.com/content/asp/jnn/2015/00000015/00000011/art00058http://hdl.handle.net/20.500.11754/25796
ISSN
1533-4880; 1533-4899
DOI
http://dx.doi.org/10.1166/jnn.2015.11481
Appears in Collections:
COLLEGE OF NATURAL SCIENCES[S](자연과학대학) > PHYSICS(물리학과) > Articles
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