Solution-Processed All-Ceramic Plasmonic Metamaterials for Efficient Solar–Thermal Conversion over 100–727 °C

Yang Li, Chongjia Lin, Zuoxu Wu, Zhongying Chen, Cheng Chi, Feng Cao, Deqing Mei, He Yan, Chi Yan Tso, Christopher Y.H. Chao, Baoling Huang

Research output: Journal article publicationJournal articleAcademic researchpeer-review

52 Citations (Scopus)

Abstract

Low-cost and large-area solar–thermal absorbers with superior spectral selectivity and excellent thermal stability are vital for efficient and large-scale solar–thermal conversion applications, such as space heating, desalination, ice mitigation, photothermal catalysis, and concentrating solar power. Few state-of-the-art selective absorbers are qualified for both low- (<200 °C) and high-temperature (>600 °C) applications due to insufficient spectral selectivity or thermal stability over a wide temperature range. Here, a high-performance plasmonic metamaterial selective absorber is developed by facile solution-based processes via assembling an ultrathin (≈120 nm) titanium nitride (TiN) nanoparticle film on a TiN mirror. Enabled by the synergetic in-plane plasmon and out-of-plane Fabry–Pérot resonances, the all-ceramic plasmonic metamaterial simultaneously achieves high, full-spectrum solar absorption (95%), low mid-IR emission (3% at 100 °C), and excellent stability over a temperature range of 100–727 °C, even outperforming most vacuum-deposited absorbers at their specific operating temperatures. The competitive performance of the solution-processed absorber is accompanied by a significant cost reduction compared with vacuum-deposited absorbers. All these merits render it a cost-effective, universal solution to offering high efficiency (89–93%) for both low- and high-temperature solar–thermal applications.

Original languageEnglish
Article number2005074
JournalAdvanced Materials
Volume33
Issue number1
DOIs
Publication statusPublished - 7 Jan 2021

Keywords

  • photothermal absorbers
  • plasmonic metamaterials
  • selective absorbers
  • solar–thermal conversion
  • solution processes

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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