Smart Window Structures Based on Highly Conductive, Transparent Metal Nanomeshes and Thermochromic Perovskite Films
Smart Window Structures Based on Highly Conductive, Transparent Metal Nanomeshes and Thermochromic Perovskite Films
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DOI：
10.1002/adom.202202409
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发表时间：
2023-01
影响因子：
9
通讯作者：
Shangduan Wu;Gabriel Cossio;Benjamin Braun;Frances Camille M. Wu;E. Yu
中科院分区：
文献类型：
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作者：
Shangduan Wu;Gabriel Cossio;Benjamin Braun;Frances Camille M. Wu;E. Yu
智能窗是一种高能效的窗，其光学透明度可以在高度透明和不透明状态之间切换，以响应入射太阳能照明。透明导电的金属纳米网格(NM)薄膜具有良好的导热性能、近红外波段的高光学透明性和优异的稳定性，是热致变色智能窗的理想候选材料。本文报道了周期为200 nm和370 nm的ZnO/Au/Al_2O_3纳米薄膜。周期为370 nm的氧化锌/Au/Al_2O_3纳米薄膜在550 nm处的透过率超过90%，方阻小于20Ω/−1。根据标准优值系数，这种结构的性能优于目前最先进的纳米薄膜。在这里，我们还展示了将ZnO/Au/Al_2O_3纳米薄膜集成到热致变色钙钛矿型智能窗口中。智能窗结构的透明度通过瞬时电阻加热来控制，以触发热致变色到不透明状态的转变，然后仅通过1太阳、AM 1.5G照明来保持该转变。这种适应气候、低功率激活和快速切换的智能窗结构为其在现实世界中的实际应用开辟了新的途径。
Smart windows are energy‐efficient windows whose optical transparency can be switched between highly transparent and opaque states in response to incident solar illumination. Transparent and conductive metal nanomesh (NM) films are promising candidates for thermochromic smart windows due to their excellent thermal conductivity, high optical transparency at near infrared wavelengths, and outstanding stability. In this study, ZnO/Au/Al2O3 NM films with periodicities of 200 and 370 nm are reported. The ZnO/Au/Al2O3 NM film with a 370 nm periodicity exhibits a transmittance over 90% at 550 nm and sheet resistance lower than 20 Ω sq−1. Based on a standard figure of merit, this structure outperforms current state‐of‐the‐art NM films. Here, the integration of ZnO/Au/Al2O3 NM films into a thermochromic perovskite smart window is also demonstrated. The transparency of the smart window structure is manipulated by transient resistive heating to trigger the thermochromic transition to the opaque state, which can be then maintained solely by 1‐sun, AM 1.5 G illumination. This climate‐adaptive, low power‐activated, and fast‐switching smart window structure opens new pathways toward its practical application in the real world.