PET solar photovoltaic film

What is the function of R-PET film in a solar cell?

In the R-PET film, the reflective film plays the role of reflecting excess heat, and its structure is depicted in Fig. 2. The photoelectric response band of solar cell is generally 0.3–1.1 μm. In 1.1–4.0 μm, solar energy is not converted into electricity, but stored in the cell as the form of parasitic heat.

What is spectral reflectance of 200 m thick PET film?

Fig. 4. Spectral reflectance of 200 μm thick PET film under different incident angles. In the R-PET film, the reflective film plays the role of reflecting excess heat, and its structure is depicted in Fig. 2. The photoelectric response band of solar cell is generally 0.3–1.1 μm.

What are radiant cooling films used in photovoltaic cells?

While polymer materials and micro-nanostructure are the latest research object of radiant cooling films used in photovoltaic cells, especially the polydimethylsiloxane (PDMS) (Lee and Luo, 2019, Zhao et al., 2018, Wang et al., 2021, Lu et al., 2017 ), due to its high flexibility and high transmittance.

What are Mylar ® PET and Melinex® PET films used for?

Mylar ® PET and Melinex ® PET films are used in a wide range of thin film photovoltaic technologies including amorphous silicon, dye sensitised solar cells (DSSC), organic photovoltaics (OPV), perovskite-based systems and other emerging platforms.

Can radiant cooling be simplified in photovoltaics?

There has been considerable research on radiant refrigeration in buildings and photovoltaics. Taking photovoltaics as an example, most of them are based on micro-nano structures or nano-scale multilayer films, which have complex structures and high production costs. Hence, simplification of radiant cooling technology appears especially important.

What is the operating temperature of a photovoltaic cell?

When the ambient temperature is 27℃, wind speed is assumed as 3 m/s, the integrated heat transfer coefficient is hc = 12 W/ (m 2 ∙K) ( Nilsson and Niklasson, 1995 ); as a result, the photovoltaic cell operating temperature is 72.65℃. After adding the PET film, the temperature is reduced by 2.75℃.