KMS Shanghai Institute of Ceramics，Chinese Academy of Sciences
| 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 Publication | ACTA CHIMICA SINICA
 |
| ISSN | 0567-7351 |
| Volume | 77Issue:1Pages:90 |
| Subtype | Article |
| Abstract | Photochromic 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. |
| Keyword | YHx:O yttrium hydride photochromic energy saving materials |
| DOI | 10.6023/A18080318 |
| Language | 中文 |
| WOS Research Area | Chemistry |
| Publisher | SCIENCE PRESS |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://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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