Effect of multilayer selective radiative anti-reflective coating on crystalline silicon photovoltaics for operating temperature reduction

ABSTRACT

Low heat transfer coefficient of ethylene-vinyl acetate hinders heat evacuation, and this causes a rise in temperature of the laminated solar module under AM1.5 spectrum. A new selective radiative antireflective coating (SR-ARC) has been proposed for the temperature reduction of the solar module and also effort has been made to improve the absorption in the 300–1100 nm wavelength range. We have compared the single, dual, triple and quad-layer of different transparent ARC materials with a different combination. In each category, we have optimised the SiO₂, Al₂O₃, Si₃N₄ and TiO₂ thin films layer stack as ARC coating and then compared the stacks for their SR-ARC properties. .

KEYWORDS:

• Passive radiative cooling
• solar module
• emissivity
• antireflective coating

Acknowledgements

The authors gratefully acknowledge the financial support obtained from TEQIP-III, MNIT-Jaipur, India. The authors would also like to acknowledge the use of experimental facility available at MRC, MNIT.

Disclosure statement

No potential conflict of interest was reported by the author(s).

Additional information

Funding

This work was supported by TEQIP-III, MNIT, India [grant number F(15)TEQIP-III/MNITJ/2019/1011 dated 25/10/2019].