Journal
MATERIALS LETTERS
Volume 174, Issue -, Pages 99-101Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.matlet.2016.03.079
Keywords
ZnO-CuO core-shell; Nanocomposites; Two-stage solution process; Absorption strength; Solar energy materials
Funding
- Science and Technology Planning Project of Wuhan City [2013010501010135]
- Science and Technology Planning Project of Hubei Province [2014BAA136]
- National Natural Science Foundation of China [51372179]
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In this work, ZnO-CuO core-shell hybrid nanospheres with well-crystalline wurzite ZnO core and monoclinic CuO shell were successfully synthesized through a two-stage solution process. The as-prepared nanocomposites were carefully characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), high-resolution transmission electron microscopy (HRTEM), and UV/Vis diffuse reflection spectroscopy (DRS). Compared with bare ZnO cores, the ZnO-CuO core-shell 0-dimensional nanocomposites had greatly enhanced absorption strength and dramatically broadened optical response ranging from near-ultraviolet to visible light, which was probably attributed to heterojunction between n-ZnO core and p-CuO shell and defects originated from synthetic procedure. The as-synthesized p-CuO/n-ZnO core-shell hybrid structure may lead to tantalizing applications including solar energy materials, LED and optical sensor. (C) 2016 Elsevier B.V. All rights reserved.
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