Enhanced photochromic performance of Zn-doped W<sub>18</sub>O<sub>49</sub>-based films for smart windows

Ma, Tingfeng; Li, Bin; Zhu, Yongkang; Wu, Senwei; Zhao, Xiujian; Chu, Xinhong; Tian, Shouqin

doi:10.1039/d4tc01445f

J. Mater. Chem. C

2024

DOI: 10.1039/d4tc01445f

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Enhanced photochromic performance of Zn-doped W₁₈O₄₉-based films for smart windows

Tingfeng Ma,

Bin Li,

Yongkang Zhu

et al.

Abstract: 4 at% Zn-doped W18O49-based bilayer films exhibited excellent photochromic performance in ultra-high luminescence transmittance of 85.33%, good solar modulation efficiency of 47.18%, excellent cycling stability and good recovery ability.

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A Spectrum‐Tailored Polymer Dispersed Liquid Crystal Film for Energy‐Saving Smart Windows

Qin,

Yuan,

Yang

et al. 2024

Small

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The polymer dispersed liquid crystal (PDLC) holds potential application in smart windows, owing to its feasibility in regulating the transmittance of specific wavelength bands to improve energy utilization. Herein, a composite PDLC smart window is designed, which showcases high emissivity of 93.79% in the mid‐infrared region and features the regulation of ultraviolet (UV), visible, and near‐infrared (NIR) light. Titanate nanomaterials with diverse morphologies are synthesized and doped to endow the PDLC film with perfect UV shielding property and excellent electro‐optical (E‐O) performance. Subsequently, the E‐O performance is further improved by modifying the structure of acrylate monomers, with the maximum transmittance exceeding 80%. Furthermore, the LaB6 layer is incorporated to effectively shield NIR light. Due to the synergistic effect of sunlight modulation and passive radiative cooling, the composite PDLC smart window can effectively lower the indoor temperature compared with traditional PDLC films. Eventually, the fabricated LaB6/PVA/PDLC smart window displays high contrast (210.65), a low threshold voltage (6.68 V), and remarkable passive radiative cooling performance (cooling power of 131.24 m2 K−1). Overall, the composite presents switchable transmittance in visible region, excellent UV‐blocking (>99%), and high NIR shielding capacities, thereby broadening its potential application in the field of smart windows.

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A Spectrum‐Tailored Polymer Dispersed Liquid Crystal Film for Energy‐Saving Smart Windows

Qin,

Yuan,

Yang

et al. 2024

Small

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Synthesis of highly transparent and fast-responding photochromic coating by template method with space-limited domains

Tian,

Liu,

et al. 2024

Chemical Engineering Journal

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Enhanced photochromic performance of Zn-doped W₁₈O₄₉-based films for smart windows

Abstract: 4 at% Zn-doped W18O49-based bilayer films exhibited excellent photochromic performance in ultra-high luminescence transmittance of 85.33%, good solar modulation efficiency of 47.18%, excellent cycling stability and good recovery ability.

Cited by 2 publications

References 42 publications

A Spectrum‐Tailored Polymer Dispersed Liquid Crystal Film for Energy‐Saving Smart Windows

A Spectrum‐Tailored Polymer Dispersed Liquid Crystal Film for Energy‐Saving Smart Windows

Synthesis of highly transparent and fast-responding photochromic coating by template method with space-limited domains

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Enhanced photochromic performance of Zn-doped W18O49-based films for smart windows

Abstract: 4 at% Zn-doped W18O49-based bilayer films exhibited excellent photochromic performance in ultra-high luminescence transmittance of 85.33%, good solar modulation efficiency of 47.18%, excellent cycling stability and good recovery ability.

Cited by 2 publications

References 42 publications

A Spectrum‐Tailored Polymer Dispersed Liquid Crystal Film for Energy‐Saving Smart Windows

A Spectrum‐Tailored Polymer Dispersed Liquid Crystal Film for Energy‐Saving Smart Windows

Synthesis of highly transparent and fast-responding photochromic coating by template method with space-limited domains

Contact Info

Product

Resources

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Enhanced photochromic performance of Zn-doped W₁₈O₄₉-based films for smart windows