Tao Li, Yin Gao, Kun Zheng, Yongmei Ma, Ding Ding and Hang Zhang
1 Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing, China
2 University of Chinese Academy of Sciences, Beijing, China
3 Institute of Chemistry, Chinese Academy of Sciences, Beijing, China
4 Institute of Materials Research and Engineering, A*STAR Research Entities, Singapore
† These authors contributed equally and should be considered co-first authors
Common glass is absorbing in the mid-infrared but transparent to sunlight, keeping our greenhouses and rooms warm. But a visibly-transparent and infrared-reflective material will perform much better than glass. Engineered multilayer optical coatings have been able to achieve both visible transparency and infrared reflectivity, but manufacturing cost has prevented their use on a large scale. Here, we predicted and successfully synthesized a transparent wavelength-selective metal-polymer hybrid films with low emissivity of less than 0.1 in the infrared range. The films, based on silver nanowires and PMMA, exhibit high transmission (>85%) through the visible wavelength range and high reflectance (>90%) in the mid-wavelength and long-wavelength infrared range. Our films are more transparent than a commercially available multilayer engineered coating in the visible and are much easier to fabricate. On an average sunny day, our films in this work warm up a prototype greenhouse 8 degrees Celsius more than that of glasses. We believe that our films hold promise for large-scale applications, leading to significant energy savings for indoor heating.
Received: 21 Aug 2019
Revised: 22 Aug 2019
Accepted: 23 Aug 2019
Published online: 22 Sep 2019
Article type:
Research Paper
DOI:
10.30919/esee8c325
Volume:
5
Page:
102-107
Citation:
ES Energy & Environment, 2019, 5, 102-107
Permissions:
Copyright
Number of downloads:
3758
Citation Information:
20
Description:
Transparent wavelength-selective metal-polymer hybrid metamaterials with low emissivity in the infra....
Transparent wavelength-selective metal-polymer hybrid metamaterials with low emissivity in the infrared range were prepared by a cost-effective method for large scale energy saving applications.
This article is cited by 20 publications.
This article is cited by 20 publications.
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