Oxygen defect-induced small polaron transfer for controlling the near-infrared absorption coefficient of hexagonal cesium tungsten bronze nanocrystals

Boxu Shen, Yuanhao Wang, Lin Lu, Hongxing Yang

Research output: Journal article publicationJournal articleAcademic researchpeer-review

7 Citations (Scopus)

Abstract

Hexagonal cesium tungsten bronze (CsxWO3) nanocrystals have attracted great attention in the field of energy-efficient windows, which exhibit the localized surface plasmon resonance (LSPR) effect and small polaron transfer in near-infrared radiation (NIR). The enhancement of the LSPR effect can be achieved by introducing aliovalent dopant into the crystal lattice, but the improvement of small polaron transfer remains a challenge. Herein, CsxWO3 nanocrystals with oxygen defects were successfully prepared by a facile one-pot method. The introduction of oleylamine in the precursor can induce the formation of oxygen defects in the crystal lattice, which leads to a higher absorption coefficient. The spectrally selective coating prepared by CsxWO3 nanocrystals with oxygen defects exhibited superior spectral selectivity with TVis, TNIR, Tlum, and Tsol of 67.11%, 11.21%, 72.59% and 49.12%, respectively.

Original languageEnglish
Pages (from-to)6942-6947
Number of pages6
JournalCeramics International
Volume48
Issue number5
DOIs
Publication statusPublished - 1 Mar 2022

Keywords

  • Absorption coefficient
  • CsWO nanocrystals
  • Energy-efficient windows
  • Oleylamine
  • Oxygen defects
  • Small polaron transfer

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Process Chemistry and Technology
  • Surfaces, Coatings and Films
  • Materials Chemistry

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