Enhanced spectral modulation of CsxWO3 nanocrystals through anionic doping for energy-efficient glazing

Shen，Boxu1; Wang，Yuanhao2; Lu，Lin1; Yang，Hongxing1

2022-03-01

10.1016/j.solmat.2021.111519

SOLAR ENERGY MATERIALS AND SOLAR CELLS   影响因子和分区

0927-0248

1879-3398

Spectrally selective materials have been widely used to shield near-infrared radiation for windows in the region with a cooling-demand climate. CsWO nanocrystals which exhibit strong localized surface plasmon resonance (LSPR) effect and small polaron transfer in near-infrared radiation have attracted great attention for fabricating the spectrally selective coating. The enhancement of its optical performance remains a challenge in energy-efficient windows. Herein, F-doped CsWO nanocrystals were successfully prepared by a solvothermal method, which demonstrate stronger near-infrared absorption performance than CsWO nanocrystals. The introduction of fluorine can enhance the free carrier density of the nanocrystals, which can lead to a higher absorption coefficient. The absorption coefficient variation of LSPR effect and small polaron transfer was explained by the variation of free carrier density and carrier mobility. When the F/W molar ratio was 0.4, the free carrier density reached 9.25 × 10 cm. The spectrally selective coating prepared by F-doped CsWO nanocrystals exhibited superior spectral selectivity with T, T, T, and T of 67.21%, 11.85%, 72.76% and 49.01%, respectively. This substitutional doping strategy provides a promising potential to improve the spectral modulation of CsWO nanocrystals for practical application of energy-saving windows.

Absorption coefficient Carrier mobility Energy-efficient windows F-doped CsxWO3 nanocrystals Free carrier density

SCI ; EI

英语

其他

TCS project of the Hong Kong Innovation and Technology Fund[UIT/139] ; National Natural Science Foundation of China[61705258]

Energy & Fuels ; Materials Science ; Physics

Energy & Fuels ; Materials Science, Multidisciplinary ; Physics, Applied

WOS:000761236600005

ELSEVIER

20214911276023

Carrier concentration ; Carrier mobility ; Coatings ; Energy efficiency ; Infrared devices ; Infrared radiation ; Light absorption ; Modulation ; Molar ratio ; Polarons ; Spectroscopy ; Surface plasmon resonance

Energy Conservation:525.2 ; Electricity: Basic Concepts and Phenomena:701.1 ; Semiconducting Materials:712.1 ; Light/Optics:741.1 ; Nanotechnology:761 ; Physical Chemistry:801.4 ; Coating Materials:813.2 ; Crystalline Solids:933.1 ; Crystal Lattice:933.1.1

MATERIALS SCIENCE

2-s2.0-85120420428

Scopus

1.Renewable Energy Research Group (RERG),Department of Building Services Engineering,The Hong Kong Polytechnic University,Kowloon,Hong Kong
2.SUSTech Engineering Innovation Center,School of Environmental Science and Engineering,Southern University of Science and Technology,Shenzhen,518055,China

Shen，Boxu,Wang，Yuanhao,Lu，Lin,et al. Enhanced spectral modulation of CsxWO3 nanocrystals through anionic doping for energy-efficient glazing[J]. SOLAR ENERGY MATERIALS AND SOLAR CELLS,2022,236.

Shen，Boxu,Wang，Yuanhao,Lu，Lin,&Yang，Hongxing.(2022).Enhanced spectral modulation of CsxWO3 nanocrystals through anionic doping for energy-efficient glazing.SOLAR ENERGY MATERIALS AND SOLAR CELLS,236.

Shen，Boxu,et al."Enhanced spectral modulation of CsxWO3 nanocrystals through anionic doping for energy-efficient glazing".SOLAR ENERGY MATERIALS AND SOLAR CELLS 236(2022).