How does chroma affect solar module efficiency?

As can be seen from Table 2, the chroma values are less than 15 for most of the solar modules. For green colours, an increased baseline reflectance in the blue and red part of the spectrum will reduce chroma and slightly increase lightness, but most importantly reduce module efficiency.

Can photovoltaic panels be used as building elements?

Aesthetic aspects must be considered when photovoltaic panels are applied as building elements. Colours can be added by reflecting some of the sunlight that otherwise could have been utilized for electricity generation. Reflectance spectra of commercial solar cell modules have been measured and analysed.

How does a CF affect a PV module?

Implementing a CF on a PV module, as described in ref. 24 has two main effects that affect the overall performance of the solar cell. The additional optical loss reduces the generated current on the cell, which lowers the electrical efficiency of the colored module.

How does light affect the performance of a PV module?

Reflection of light to create the color produces a dual effect on the overall performance of a PV module. Reduction of extracted power, which reduces electrical performance, and a reduction of the total absorbed irradiance, which reduces a cell's operational temperature.

How can colored PV systems be realized?

This work reviews possible approaches to realize colored PV systems by implementing semitransparent cells, selective reflective films, and luminophores. Additionally, the research progress to minimize light sacrifice for color production has been investigated.

What causes chroma loss in solar panels?

This may be caused by Fresnel reflection of the cover glass. This baseline reflectance causes an increased loss in the NIR band while in the VIS band it also reduces the chroma of the colour, as it tends to move all colours towards grey. As can be seen from Table 2, the chroma values are less than 15 for most of the solar modules.