PV Gap

Audrey Said:

why does green light no give me a good power output for a solar panel compared to red and blue?

We Answered:

Silicon solar panels have their greatest sensitivity at the red end of the visible spectrum and in the near infrared. By contrast, the human eye is relatively more sensitive to the green part of the spectrum. Neither silicon nor human eyes are especially sensitive to the relatively short blue wavelengths, but your blue solution may also transmit a significant amount of red or infrared light, giving a comparatively high reading for the silicon's "blue" sensitivity.

Alfredo Said:

photovoltaic solar panels diy?

We Answered:

for sure, this site is great

April Said:

Do solar panels use the light from the sun, the heat from the sun or both?

We Answered:

UV radiations only.

The heat radiated is IR (infrared) and HAS A NEGATIVE IMPACT ON SOLAR CELLS since they are dark, and have a glazing layer... so they have a built in "greenhouse effect". As such their temperature in sunny countries can often exceed 60°C and be over 80°C while they have an optimal performance at 45-55°C.

Solar cells need DIRECT solar radiation to work.

Areas in the world which have a lot of light but are not necessarily too hot are just perfect.

Julian Said:

photovoltaic solar panels cheap?

We Answered:

This site is amazing

Olga Said:

what is the difference photovoltaic solar panels and thermal solar panels?

We Answered:

Photvoltaic converts light into voltage. Thermal collects light to heat.