ENHANCEMENT OF SOLAR CELL PERFORMANCE WITH WAVY ANTIREFLECTION AND RADIATIVE COOLING FILMS

Li Jingjing; Wang Ruixiang; Xing Meibo

doi:10.19912/j.0254-0096.tynxb.2024-0778

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Acta Energiae Solaris Sinica ›› 2025, Vol. 46 ›› Issue (9) : 520-527. DOI: 10.19912/j.0254-0096.tynxb.2024-0778

ENHANCEMENT OF SOLAR CELL PERFORMANCE WITH WAVY ANTIREFLECTION AND RADIATIVE COOLING FILMS

Li Jingjing, Wang Ruixiang, Xing Meibo

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Abstract

This study proposes the use of a wavy polydimethylsiloxane （PDMS） film to enhance the photovoltaic conversion efficiency of silicon solar cells through antireflection and radiative cooling. Through finite-difference time-domain （FDTD） simulation, the effect of PDMS thickness and waveform parameters on the optical performance is investigated. The results show that the wavy PDMS film with a thickness of 60 μm, a wave period of 2 μm, and a wave amplitude of 5 μm has the optimal performance. It achieves 94% emissivity in the atmospheric window band （8-13 μm） and 99.5% solar transmittance in the photovoltaic response band （0.3-1.1 μm）. In addition, this wavy PDMS film can reduce the temperature of bare silicon cells by 5.82 ℃ with the combined antireflection and radiative cooling, effectively avoiding 3.15% electrical losses.

Key words

solar cells / radiative cooling / numerical analysis / spectral selectivity / heat radiation / films

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Li Jingjing, Wang Ruixiang, Xing Meibo. ENHANCEMENT OF SOLAR CELL PERFORMANCE WITH WAVY ANTIREFLECTION AND RADIATIVE COOLING FILMS[J]. Acta Energiae Solaris Sinica. 2025, 46(9): 520-527 https://doi.org/10.19912/j.0254-0096.tynxb.2024-0778

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