Photovoltaic Panel of a New Generation

It has been shown that the corrosion of PV elements encapsulated in silicone gel is negligible compared to the still used standard encapsulation into an EVA (ethylvinylacetate) sheet, even in extreme conditions of elevated temperatures of up to 110°C and exposure to UV radiation. This finding is consistent with a negligible reduction in the efficiency of energy conversion of PV panels encapsulated in silicone gel after several years of operation.
As opposed to EVA, the silicone gel transparency is significantly better, particularly in the wavelength range of 350-700 nm. The decrease in the silicone gel transparency caused by UV radiation is very small compared to EVA. We assume that PV panels encapsulated in silicone gel could work up to 50 years with a decrease in performance of no more than 15% as compared to the initial value, because silicone gel has much lower corrosion, which is usually the main reason for failures of PV panels encapsulated in EVA. In comparison to EVA, the gel also shows less tension during the PV panel temperature cycles even at extremely low temperatures of approximately -40°C, at which EVA hardens completely.

Contact: Ing. Vladislav Poulek, CSc.

Poulek, V., Khudysh, A., Libra, M., Innovative low concentration PV systems with bifacial solar panels. Solar Energy, 120, 2015, 10, str. 113–116, ISSN 0038-092X.