Journal
APPLIED PHYSICS LETTERS
Volume 87, Issue 9, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.2035867
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Lithium ions were introduced into Er-doped ZnO specimens, and the codoping effect was investigated on the photoluminescence (PL) spectra around 1.54 mu m. It was found that the Li addition increased the PL intensity by about 90 times at most, and also the strongest peak position shifted from 1.534 mu m to 1.539 mu m. The enhancement in the PL intensity could be attributed to the modification of the local symmetry and structure around Er3+ by Li ions. The Li ions can be introduced easily into the Er-doped ZnO and other semiconductor hosts, and is therefore a very useful element in the practical fabrication of the optoelectronic devices. (c) 2005 American Institute of Physics.
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