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Effect of the Pd Layer on Optical Regulation Properties of the Oxygen Containing Yttrium Hydrides
La Mao; Bao Shan-Hu; Sha Ren
2019-01-15
Source PublicationACTA CHIMICA SINICA
ISSN0567-7351
Volume77Issue:1Pages:90
SubtypeArticle
AbstractPhotochromic materials of oxygen-containing yttrium hydride exhibit reversible switching properties that can find applications in the energy saving windows, optical switching devices. However, the photochromic mechanisms of the oxygen-containing yttrium hydride has been not clarified yet. The optical modulation and durability of the films need to be improved. In this paper, oxygen-containing yttrium hydride films covered with hydrogen catalytic-palladium layers were prepared on a glass substrate by a direct-current (DC) magnetron sputtering methods. Firstly, oxygen-containing yttrium hydride thin films were deposited by DC magnetron sputtering of the Y targets in a 0.4 Pa with argon (purity 6N) and hydrogen (5N) mixed gas. Secondly, a thin film of Pd was deposited on the surface of YHx:O layer. Moreover, the effects of the Pd layer in the optical regulation state, crystal structure, surface microstructure and the content of each element of the oxygen-containing yttrium hydride films were investigated by means of SEM, XRD, and XPS methods. In the initial state, the films showed a transparent state with high transmittance in the visible and near-IR range same with single layer of the YHx:O. After exposure to xenon or visible light, the solar transmittance (T-sol) of the films sharply decreased by 37.39%. The result can be found that the coloring process (illumination process) of YHx:O thin films can be promoted and the optical regulation range can be increased after covered with a Pd layer. Investigation of the crystal structure by XRD demonstrates YHx:O covered with Pd, the same crystalline state with the YHx:O thin films has been found. After illumination, all reflection peaks of the YHx:O films slightly moving towards the larger angles with smaller lattice parameter (similar to 5.30 angstrom) due to the deoxidation of YHx:O films. It can be seen from the EDS data that the oxygen contents in the YHx:O film decreases, while the yttrium contents increases, which is consistent with that of the single layer films. The XPS survey scans analysis of the YHx:O and Pd/ YHx:O was also studied. After illumination, all peaks of the single layer slightly moving towards the larger angles. But the double layer have reverse result with above.
KeywordYHx:O yttrium hydride photochromic energy saving materials
DOI10.6023/A18080318
Language中文
WOS Research AreaChemistry
PublisherSCIENCE PRESS
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Document Type期刊论文
Identifierhttp://ir.sic.ac.cn/handle/331005/27395
Collection中国科学院上海硅酸盐研究所
Recommended Citation
GB/T 7714
La Mao,Bao Shan-Hu,Sha Ren. Effect of the Pd Layer on Optical Regulation Properties of the Oxygen Containing Yttrium Hydrides[J]. ACTA CHIMICA SINICA,2019,77(1):90.
APA La Mao,Bao Shan-Hu,&Sha Ren.(2019).Effect of the Pd Layer on Optical Regulation Properties of the Oxygen Containing Yttrium Hydrides.ACTA CHIMICA SINICA,77(1),90.
MLA La Mao,et al."Effect of the Pd Layer on Optical Regulation Properties of the Oxygen Containing Yttrium Hydrides".ACTA CHIMICA SINICA 77.1(2019):90.
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