Abstract
The polymer-stabilized cholesteric liquid crystal (PSCLC) films that exhibited broadband reflective in the near-infrared region were prepared by spin-coating CeO2 dispersion. And then, the influence of dispersion concentration, polymerizable monomer concentration, light intensity, and polymerization temperature on the reflection wavelength of PSCLC films were studied. The results showed that reflection bandwidth of PSCLC film was broadened from 237 nm to 426 nm. The experimental data confirmed that the diffusion of NP forms a light intensity gradient in the system, which was beneficial to forming the non-uniform pitch distribution. Base on Based on these properties of PSCLC film, the film was used in the small building energy-saving experiment mentioned. It was found that the sample containing the PSCLC film can lower the temperature of the temperature sensor by about 8 °C than the sample without the PSCLC film. Therefore, the prepared PSCLC film is expected to be used in building energy-saving and other aspects.
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