High efficiency of photon-to-heat conversion with a 6-layered metal/dielectric film structure in the 250-1200 nm wavelength region

Ming Hui Liu, Er Tao Hu, Yuan Yao, Kai Yan Zang, Ning He, Jing Li, Yu Xiang Zheng, Song You Wang, Osamu Yoshie, Yangpak Lee, Cai Zhuang Wang, D. W. Lynch, Liang Yao Chen

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Abstract

The optical properties and thermal stability of a 6-layered metal/dielectric film structure are investigated in this work. A high optical absorption average of > 98% is achieved in the broad spectral range of 250- 1200 nm with experiment results, in good agreement with our simulated results. The samples have a typical layered structure of: SiO2(57.3 nm)/Ti(5.7 nm)/SiO2(67.1 nm)/Ti(11.6 nm)/SiO2(51.4 nm)/Cu(>100 nm), deposited on optically polished Si or K9-glass substrates by magnetron sputtering. The sample of the 6-layered metal/dielectric film structure has an AM1.5G solar absorptance of 95.5% with the features of low thermal emittance of 0.136 at 700K and good thermal stability, and will be potentially suitable for practical application in high-efficiency solar absorber devices in many fields.

Original languageEnglish
Pages (from-to)A1843-A1852
JournalOptics Express
Volume22
Issue number25
DOIs
Publication statusPublished - 2014 Dec 15

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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    Liu, M. H., Hu, E. T., Yao, Y., Zang, K. Y., He, N., Li, J., Zheng, Y. X., Wang, S. Y., Yoshie, O., Lee, Y., Wang, C. Z., Lynch, D. W., & Chen, L. Y. (2014). High efficiency of photon-to-heat conversion with a 6-layered metal/dielectric film structure in the 250-1200 nm wavelength region. Optics Express, 22(25), A1843-A1852. https://doi.org/10.1364/OE.22.0A1843