Solar module glass transmittance

What is the transmittance of uncoated solar glass?

The transmittance of conventional uncoated solar glass at a vertical incidence of light is approximately 91%. The front reflects around 4%, around 4% on the back, and 1% absorption. In addition, there are double reflections within the glass, which is in the order of 0.2%.

What is the optical transition in a PV Mini-Module?

In the PV mini-module, the optical transition occurs through the glass, EVA, ARC, and the textured PV cell (detector), unlike the glass sample used in transmission measurements. The optimized optical transitions reduce the reflection on the rear side and enable a higher light yield.

What is the optical transmittance of mc-Si & a-Si PV modules?

Elamim et al., obtained comparable results on mc-Si, pc-Si, and a-Si PV modules. In addition, the optical transmittance of the glass samples was reduced by 75%–5% because of dust deposits ranging from 2.9 to 24.3 mg/cm 2. The transmission and dust density show a linear negative curve.

Does dust affect the transmittance of soiled glass?

One approach is to consider the light-scattering effects of dust when measuring the transmittance of soiled glass samples and the differing light paths in glass samples and PV modules. The transmittance of conventional uncoated solar glass at a vertical incidence of light is approximately 91%.