期刊
JOURNAL OF ALLOYS AND COMPOUNDS
卷 462, 期 1-2, 页码 356-361出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2007.08.066
关键词
nickel oxide; sputtering; electrochromic properties; optical properties
The non-stoichiometric nickel oxide (NiOx, x > 1) films deposited on a conducting substrate by RF magnetron sputtering have been investigated for electrochromism in alkaline solution. It was found that both Ni3+ and Ni2+ existed in NiOx films. The intercalation and deintercalation of H+ ions causes the bleaching and coloring of NiOx films. The atomic ratio of Ni and O in the NiOx films is 0.7:1 (as-deposited); 0.51:1 (bleached); 0.45:1 (colored). The maximal optical density change was found to be 0.78 at a spectral of 326 nm. With the increase of temperature of heat treatment, the electrochromic properties of NiOx films were weakened. (C) 2007 Elsevier B.V. All rights reserved.
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