PREPARATION OF TEXTURED PDMS RADIATIVE COOLING FILM AND ITS APPLICATION IN PHOTOVOLTAICS

Jiang Qingyang; Yu Xiaomei; Luo Chenglong; Yang Yongpu; Fu Huide

doi:10.19912/j.0254-0096.tynxb.2024-0600

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Acta Energiae Solaris Sinica ›› 2025, Vol. 46 ›› Issue (8) : 423-429. DOI: 10.19912/j.0254-0096.tynxb.2024-0600

PREPARATION OF TEXTURED PDMS RADIATIVE COOLING FILM AND ITS APPLICATION IN PHOTOVOLTAICS

Jiang Qingyang¹, Yu Xiaomei², Luo Chenglong³, Yang Yongpu², Fu Huide²

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Abstract

This study presents a simple approach for fabricating polydimethylsiloxane （PDMS） films featuring textured surfaces. And the textured surface was chemically modified and optimized, which makes it with ideal spectral selectivity and a superhydrophobic surface. Testing results show that the superhydrophobic PDMS （SH-PDMS） film displays an average emissivity of approximately 97.0% within the "atmospheric window" band （8-13 μm）, along with an average solar transmittance of up to 94.8% in the range of 300-1100 nm. Consequently, the SH-PDMS film holds potential as an effective radiative cooling layer for photovoltaic （PV） panels. Application of this film to commercial photovoltaic panels demonstrates superhydrophobicity and self-cleaning properties on the panel surface. Furthermore, outdoor daytime testing results indicate a temperature reduction of 1.0-1.5 ℃ for PV panels featuring the SH-PDMS film compared to those with original glass surfaces. Additionally, the PV panels with SH-PDMS film exhibits reduced light reflection and improves photoelectric output relative to smooth photovoltaic surfaces.

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radiative cooling / superhydrophobicity / photovoltaics / surface texturing / spectral selectivity / atmospheric window

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Jiang Qingyang, Yu Xiaomei, Luo Chenglong, Yang Yongpu, Fu Huide. PREPARATION OF TEXTURED PDMS RADIATIVE COOLING FILM AND ITS APPLICATION IN PHOTOVOLTAICS[J]. Acta Energiae Solaris Sinica. 2025, 46(8): 423-429 https://doi.org/10.19912/j.0254-0096.tynxb.2024-0600

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