Effect of the Pd Layer on Optical Regulation Properties of the Oxygen Containing Yttrium Hydrides

doi:10.6023/A18080318

Acta Chim. Sinica ›› 2019, Vol. 77 ›› Issue (1): 90-94.DOI: 10.6023/A18080318 Previous Articles Next Articles

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Pd催化层对含氧氢化钇(YHx:O)薄膜光致变色调节能力的影响

拉毛^a,b, 包山虎^a,b, 莎仁^a

a 内蒙古师范大学化学与环境科学学院呼和浩特 010020;
b 中国科学院上海硅酸盐研究所工业陶瓷研究中心上海 200050

投稿日期:2018-08-05 发布日期:2018-09-30
通讯作者: 莎仁 E-mail:994042048@qq.com
基金资助:
项目受国家自然科学基金（No.51272271）资助.

Effect of the Pd Layer on Optical Regulation Properties of the Oxygen Containing Yttrium Hydrides

La Mao^a,b, Bao Shan-Hu^a,b, Sha Ren^a

a Department of Chemistry and Environmental Science, Inner Mongolia Normal University, Hohhot 010020;
b State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050

Received:2018-08-05 Published:2018-09-30
Contact: 10.6023/A18080318 E-mail:994042048@qq.com
Supported by:
Project supported by the National Natural Science Foundation of China (No. 51272271).

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 (~5.30 Å) 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.

Key words: YHx:O, yttrium hydride, photochromic, energy saving materials

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La Mao, Bao Shan-Hu, Sha Ren. Effect of the Pd Layer on Optical Regulation Properties of the Oxygen Containing Yttrium Hydrides[J]. Acta Chim. Sinica, 2019, 77(1): 90-94.

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Pd催化层对含氧氢化钇(YHx:O)薄膜光致变色调节能力的影响

Effect of the Pd Layer on Optical Regulation Properties of the Oxygen Containing Yttrium Hydrides

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