A Study of the Optical Properties and Stability of Cs<sub>0.33</sub>WO<sub>3</sub> with Different Particle Sizes for Energy-Efficient Window Films in Building Glazing
Cs<sub>0.33</sub>WO<sub>3</sub> (CWO) is a widely used inorganic material in window films and glass coatings, known for its excellent near-infrared radiation (NIR) blocking property and high visible light transmittance (T<sub>vis</sub>). However, the stability of...
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MDPI AG
2024-09-01
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| author | Ning Li Qinglin Meng Lihua Zhao Nan Zhang Pin Wang Sumei Lu |
| author_facet | Ning Li Qinglin Meng Lihua Zhao Nan Zhang Pin Wang Sumei Lu |
| author_sort | Ning Li |
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| description | Cs<sub>0.33</sub>WO<sub>3</sub> (CWO) is a widely used inorganic material in window films and glass coatings, known for its excellent near-infrared radiation (NIR) blocking property and high visible light transmittance (T<sub>vis</sub>). However, the stability of NIR blocking and the optical properties of CWO in the process of application is an urgent and important problem, because significant changes in optical results can impact the related products, such as window films, glass coatings, and so on. In this paper, the particle sizes and optical properties of CWO are tested to study the light stability and their relative relations. The results indicate that CWO particle sizes between 130 nm and 100 nm (D90, the point where 90% of the particles have a diameter smaller than the specified value) exhibit high stability in terms of NIR blocking and visible light transmittance (Tvis). CWO particles with D90 < 100 nm experience a greater reduction in NIR blocking, though this ability significantly recovers upon exposure to sunlight, making these coatings particularly suitable for use in tropical and subtropical climates. |
| format | Article |
| id | doaj-art-66165438580e4fb2803515fbede24b0e |
| institution | OA Journals |
| issn | 2075-5309 |
| language | English |
| publishDate | 2024-09-01 |
| publisher | MDPI AG |
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| series | Buildings |
| spelling | doaj-art-66165438580e4fb2803515fbede24b0e2025-08-20T02:11:12ZengMDPI AGBuildings2075-53092024-09-011410313310.3390/buildings14103133A Study of the Optical Properties and Stability of Cs<sub>0.33</sub>WO<sub>3</sub> with Different Particle Sizes for Energy-Efficient Window Films in Building GlazingNing Li0Qinglin Meng1Lihua Zhao2Nan Zhang3Pin Wang4Sumei Lu5School of Environment and Civil Engineering, Dongguan University of Technology, Dongguan 523808, ChinaState Key Laboratory of Subtropical Building Science, South China University of Technology, Guangzhou 510640, ChinaState Key Laboratory of Subtropical Building Science, South China University of Technology, Guangzhou 510640, ChinaGZ Municipal Group Design Institute Co., Ltd., Guangzhou 510060, ChinaSchool of Environment and Civil Engineering, Dongguan University of Technology, Dongguan 523808, ChinaSchool of Environment and Civil Engineering, Dongguan University of Technology, Dongguan 523808, ChinaCs<sub>0.33</sub>WO<sub>3</sub> (CWO) is a widely used inorganic material in window films and glass coatings, known for its excellent near-infrared radiation (NIR) blocking property and high visible light transmittance (T<sub>vis</sub>). However, the stability of NIR blocking and the optical properties of CWO in the process of application is an urgent and important problem, because significant changes in optical results can impact the related products, such as window films, glass coatings, and so on. In this paper, the particle sizes and optical properties of CWO are tested to study the light stability and their relative relations. The results indicate that CWO particle sizes between 130 nm and 100 nm (D90, the point where 90% of the particles have a diameter smaller than the specified value) exhibit high stability in terms of NIR blocking and visible light transmittance (Tvis). CWO particles with D90 < 100 nm experience a greater reduction in NIR blocking, though this ability significantly recovers upon exposure to sunlight, making these coatings particularly suitable for use in tropical and subtropical climates.https://www.mdpi.com/2075-5309/14/10/3133light stabilitynear infrared shieldingNIR blocking recoveringenergy efficiencycesium tungsten oxide |
| spellingShingle | Ning Li Qinglin Meng Lihua Zhao Nan Zhang Pin Wang Sumei Lu A Study of the Optical Properties and Stability of Cs<sub>0.33</sub>WO<sub>3</sub> with Different Particle Sizes for Energy-Efficient Window Films in Building Glazing Buildings light stability near infrared shielding NIR blocking recovering energy efficiency cesium tungsten oxide |
| title | A Study of the Optical Properties and Stability of Cs<sub>0.33</sub>WO<sub>3</sub> with Different Particle Sizes for Energy-Efficient Window Films in Building Glazing |
| title_full | A Study of the Optical Properties and Stability of Cs<sub>0.33</sub>WO<sub>3</sub> with Different Particle Sizes for Energy-Efficient Window Films in Building Glazing |
| title_fullStr | A Study of the Optical Properties and Stability of Cs<sub>0.33</sub>WO<sub>3</sub> with Different Particle Sizes for Energy-Efficient Window Films in Building Glazing |
| title_full_unstemmed | A Study of the Optical Properties and Stability of Cs<sub>0.33</sub>WO<sub>3</sub> with Different Particle Sizes for Energy-Efficient Window Films in Building Glazing |
| title_short | A Study of the Optical Properties and Stability of Cs<sub>0.33</sub>WO<sub>3</sub> with Different Particle Sizes for Energy-Efficient Window Films in Building Glazing |
| title_sort | study of the optical properties and stability of cs sub 0 33 sub wo sub 3 sub with different particle sizes for energy efficient window films in building glazing |
| topic | light stability near infrared shielding NIR blocking recovering energy efficiency cesium tungsten oxide |
| url | https://www.mdpi.com/2075-5309/14/10/3133 |
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