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In this work, a detailed study is conducted on the visible transmittance, solar reflectance, and emissivity properties of low-emissivity coatings composed of one, two, and three layers of silver. The results demonstrate significant enhancements in both optical and thermal properties achievable by increasing the number of silver layers, leading to coatings that are more transparent in the visible spectrum, more reflective in the near-infrared, with lower emissivity and lower sheet resistance. The aesthetic adjustment possibilities of the different structures are also examined, with coatings composed of three layers of silver being more flexible.
Herguedas et al. (Wed,) studied this question.