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一个智能窗口带有被动辐射冷却和可通过分子工程切换近红外光传输

Cong Ma¹, Zuowei Zhang², Yihai Yang¹

¹School of Materials Science and Engineering, Peking University, Beijing 100083, China.

ACS applied materials & interfaces

|May 7, 2024

概括

研究人员开发了具有可切换近红外光透射率和被动辐射冷却的智能窗户. 该技术为建筑物和车辆提供节能温度调节.

科学领域:

材料科学材料科学材料科学
光电学是指光电子产品.
可持续能源可持续能源

背景情况:

智能窗户对于现代建筑和车辆的能源效率至关重要.
目前的智能窗户技术在宽带太阳光调制和节能性能方面面临着挑战.

研究的目的:

开发一款具有可切换近红外 (NIR) 光传导和被动辐射冷却的新型智能窗口.
研究单体设计,特别是键和基对聚合物分散液晶 (PDLC) 薄膜性能的影响.

主要方法:

单体设计策略和光诱导聚合物被用于创建智能窗膜.
对含有键和基的烯酸单体进行系统研究.
电光特性,微观结构和辐射冷却效率的表征.

主要成果:

在PDLC片中实现了高对比率 (高达90.4) 和低值电压 (低至2.0V).
已证明可切换的NIR传输率低于10%.
计算出的辐射冷却效率为142.69W/m2,表明室内温度调节的优越性.

结论:

开发的智能窗薄膜具有出色的电光性能和高效的被动辐射冷却.
加入碳酸和化单体增强了温度管理能力.
这些薄膜显示出在灵活的智能窗户和伪装材料中应用的巨大潜力.

关键词:

这些PDLC是PDLC.化物单体是一种化物单体.通过键形成键.被动辐射冷却是一种被动的辐射冷却.智能窗口智能窗口智能窗口

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