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Journal of Nanomaterials
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Journal of Nanomaterials
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2012
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Article
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Fig 2
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Research Article
Sonochemical Synthesis of
-Doped ZnO Nanospheres with Enhanced Upconversion Photoluminescence
Figure 2
(a) SEM, (b) TEM, and (c) HRTEM images of the as-prepared
-doped ZnO nanospheres with Er doping concentration of 2%.
(a)
(b)
(c)