Efficient Strategy for Radiative Cooling Based on Ultra-Broad-Band Infrared Regulation of Flexible Bilayer Film

IF 8.3 2区 材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY
Dongdong Liang, Jie Ren, Huan Liu, Yingxin Yang, Atsha Ambar, Ying Sun* and Cong Wang*, 
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Abstract

Flexible thermal radiation films with adjustable broad-band infrared radiation could maintain various heat-generating electronic devices working stably in corresponding operating temperatures, making them good candidates for radiative cooling (RC) material. However, the controllable radiation peaks of the metamaterial were narrow, and manipulation was a time-consuming and complex process. Herein, we design a simple TiN/Si bilayer film with controllable broad-band radiation peaks at a thermal radiation wavelength of 3.5–20 μm by impedance matching. Meanwhile, the different bilayer films applied to aluminum devices at different temperatures exhibit outstanding heat dissipation efficiency and maintain the corresponding equilibrium temperature to ensure that devices work stably for a long time. Moreover, the bilayer films deposited on the flexible PI substrates exhibit preferable thermostability and higher tensile strength than existing radiative cooling materials deposited on PDMS, PE, PMMA or TPX, etc. This work provides an effective strategy to realize efficient radiation cooling for flexible electronic devices and spacecraft appendages.

Abstract Image

Abstract Image

基于柔性双层膜超宽带红外调控的高效辐射冷却策略。
柔性热辐射薄膜具有可调的宽带红外辐射,可使各种发热电子器件在相应的工作温度下稳定工作,是辐射冷却(RC)材料的理想选择。然而,该超材料的可控辐射峰较窄,操作过程耗时且复杂。本文通过阻抗匹配设计了一种简单的TiN/Si双层薄膜,该薄膜在3.5 ~ 20 μm热辐射波长处具有可控的宽带辐射峰。同时,在不同温度下应用于铝器件的不同双层膜表现出出色的散热效率,并保持相应的平衡温度,确保器件长时间稳定工作。此外,沉积在柔性PI衬底上的双层膜比沉积在PDMS, PE, PMMA或TPX等上的现有辐射冷却材料具有更好的热稳定性和更高的拉伸强度。为实现柔性电子器件和航天器附属物的高效辐射冷却提供了有效的策略。
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来源期刊
ACS Applied Materials & Interfaces
ACS Applied Materials & Interfaces 工程技术-材料科学:综合
CiteScore
16.00
自引率
6.30%
发文量
4978
审稿时长
1.8 months
期刊介绍: ACS Applied Materials & Interfaces is a leading interdisciplinary journal that brings together chemists, engineers, physicists, and biologists to explore the development and utilization of newly-discovered materials and interfacial processes for specific applications. Our journal has experienced remarkable growth since its establishment in 2009, both in terms of the number of articles published and the impact of the research showcased. We are proud to foster a truly global community, with the majority of published articles originating from outside the United States, reflecting the rapid growth of applied research worldwide.
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