光致变色窗户因结构简单、被动调光和零能耗输入而被认为是一种高效的节能智能窗,然而有关光致变色智能窗的研究很少涉及中红外(MIR)波段,这限制了节能效率.本研究通过在 ITO 衬底上生长稀土含氧氢化物(ReOxHy)薄膜,实现了宽波段调制的能力.所开发的光致变色智能窗口能够通过感应光强度自动调节发射率,同时保持可见光和近红外(NIR)调制(ΔTsol=35.1%,ΔTl um=37%,Δε8-13 μm=0.12).研究还通过优化制备气氛,实现了GdOxHy 的一步制备并提高了稳定性,通过综合表征分析了光致变色机理.总之,这种跨越可见光-近红外-中红外的被动协同调制方法有望推动光致变色智能窗的发展.
Photochromic windows are considered an effective and energy-efficient smart window due to their simple structure,passive light modulation,and zero-energy input.However,the research on photochromic smart windows has rarely addressed the mid-infrared(MIR)bands,which greatly limits energy-saving efficiency.Here,we report that rare-earth oxygen-containing hydrides(ReOxHy)films grown on ITO substrates have the ability to be broadband modulated.The developed photochromic smart window is capable of automatically adjusting emissivity by sensing light intensity while maintaining visible and near-infrared(NIR)modulation(ΔTsol = 35.1%,ΔTlum = 37%,and Δε8-13 μm = 0.12).We also achieved one-step preparation of GdOxHy with improved stability by optimising the preparation atmosphere.The photochromic mechanism was analyzed by comprehensive characterization.In conclusion,this passive and synergistic modulation method across the visible-NIR-MIR is expected to greatly advance the field of photochromic smart windows.
李众少;李明;曹逊
中国科学院 上海硅酸盐研究所, 上海 200050中国科学院 上海硅酸盐研究所, 上海 200050||中国科学院大学 材料科学与光电工程中心, 北京 100049
化学工程
光致变色;稀土含氧氢化物;智能窗;动态辐射制冷
photochromic;rare-earth oxygen-containing hydride;smart window;dynamic radiative cooling
《无机材料学报》 2024 (004)
441-448 / 8
National Key Research and Development Program of China(2021YFA0718900);Key Collaborative Research Program of the Alliance of International Science Organizations(ANSO-CR-KP-2021-01);National Natural Science Foundation of China(51972328,62005301,52002392,62175248);Shanghai B&R International Cooperation Program(20640770200);Shanghai"Science and Technology Innovation Action Plan"Intergovernmental International Science and Technology Cooperation Program(21520712500);Shanghai Science and Technology Funds(23ZR1481900);Open Project of Wuhan National Laboratory for Optoelectronics(2022WNLOKF014);Science Foundation for Youth Scholar of State Key Laboratory of High Performance Ceramics and Superfine Microstructures(SKL202202)
10.15541/jim20230539
评论