Observation of Mediated Cascade Energy Transfer in Europium-Doped ZnO Nanowalls by 1,10-Phenanthroline

Title
Observation of Mediated Cascade Energy Transfer in Europium-Doped ZnO Nanowalls by 1,10-Phenanthroline
Author(s)
손영구강정수[강정수]정용광[정용광]강준길[강준길]자오[자오]프라드한[프라드한]리융[리융]
Keywords
LUMINESCENCE PROPERTIES; HYDROTHERMAL METHOD; OPTICAL-PROPERTIES; ITO SUBSTRATE; COATED GLASS; THIN-FILMS; EU; PHOTOLUMINESCENCE; NANORODS; GROWTH
Issue Date
201501
Publisher
AMER CHEMICAL SOC
Citation
JOURNAL OF PHYSICAL CHEMISTRY C, v.119, no.4, pp.2142 - 2147
Abstract
Embedding rare earth ions into a host material such as alkali halides, semiconductors, and metal oxides has been extensively studied, with the goal to improve performance in light emitting devices and biomedicine. Here, Europium-embedded ZnO nanowall structures have been achieved by a facile electrochemical deposition method. Upon Eu embedment, the nanowalls were found to become thicker and stacked. X-ray photoemission study revealed that Zn(OH)(2) was more dominant than ZnO near the surface and it confirmed that Eu(III) was uniformly distributed in the ZnO-Zn(OH)(2) core-shell structure. We also measured the photoluminescence spectra of as-grown, heat-treated and 1,10-phenanthroline surface-functionalized ZnO nanowalls samples, which led us to propose a unique cascade energy transfer model between ZnO, 1,10-phenanthroline, and Eu3+ ion.
URI
http://hdl.handle.net/YU.REPOSITORY/33655http://dx.doi.org/10.1021/jp5090795
ISSN
1932-7447
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이과대학 > 화학생화학부 > Articles
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