插入超薄TiOx层增强vo2智能窗的太阳调制性能

IF 6.3 2区材料科学 Q2 ENERGY & FUELS

Solar Energy Materials and Solar Cells Pub Date : 2025-08-21 DOI:10.1016/j.solmat.2025.113916

Taiyo Hirono , Hideki Nakae , Keisuke Kudo , Md. Suruz Mian , Kunio Okimura , Mustapha Zagrioui , Tomohiko Nakajima , Iwao Yamaguchi

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引用次数: 0

摘要

热致变色智能窗能够随着环境温度的升高而自动减少红外光的透射，其发展已成为可持续发展社会的关键问题。在本研究中，我们旨在通过提高VO2薄膜的结晶度来实现溅射沉积VO2智能窗的高太阳调制能力。在ZnO缓冲层和VO2层之间插入超薄TiOx层对提高VO2膜的取向程度非常有效。结果表明，TiOx的加入使VO2薄膜的应力得到了缓解，这是由于钛原子的增强氧化作用。85 nm SiO2增透膜与TiOx复合后，太阳透过率调制指数（ΔTsol）提高了18.2%。此外，在TiOx/ZnO-buffered玻璃上生长的90 nm-TiO2增透顶层VO2薄膜，其太阳透射率从30°C时的35.1%切换到90°C时的14.1%，在溅射沉积的VO2智能窗中达到最高ΔTsol 21.0%。通过研究，我们展示了一条通过工业友好的溅射方法制备的基于vo2的智能窗口实现ΔTsol超过20%的途径，尽管透光率指数仍然很低。

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Enhanced solar modulation performance of VO2-based smart windows with insertion of ultrathin TiOx layer

Development of thermochromic smart windows, which enable the reduction of infrared light transmission automatically with ambient temperature rise, is becoming a key issue for sustainable society. In this study, we aimed to approach high solar modulation ability in sputter-deposited VO₂-based smart windows through the improvement of crystallinity of VO₂ film. Insertion of an ultrathin TiO_x layer between the ZnO buffer and the VO₂ layers was found to be quite effective for improving the degree of orientation of the VO₂ films. It was found that the stress of the VO₂ film was relaxed by the insertion of TiO_x through the effect of enhanced oxidation with Ti atoms. The anti-reflection coating of SiO₂ of 85 nm combined with the TiO_x showed an enhanced solar transmittance modulation (ΔT_sol) index of 18.2 %. Furthermore, 90 nm-TiO₂ anti-reflection top-coated VO₂ film grown on TiO_x/ZnO-buffered glass showed solar transmittance switching from 35.1 % at 30 °C to 14.1 % at 90 °C, achieving the highest ΔT_sol of 21.0 % in sputter-deposited VO₂-based smart windows. Through the study, we showed a route to realize ΔT_sol over 20 % in VO₂-based smart windows prepared by an industrially friendly sputtering method, although the luminous transmittance index was still low.

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来源期刊

Solar Energy Materials and Solar Cells 工程技术-材料科学：综合

CiteScore

12.60

自引率

11.60%

发文量

513

审稿时长

47 days

期刊介绍： Solar Energy Materials & Solar Cells is intended as a vehicle for the dissemination of research results on materials science and technology related to photovoltaic, photothermal and photoelectrochemical solar energy conversion. Materials science is taken in the broadest possible sense and encompasses physics, chemistry, optics, materials fabrication and analysis for all types of materials.