Photovoltaic solar panel - Midsummer BOLD

Midsummer BOLD is an ultralight and flexible solar panel which, among other things, is intended for cardboard and membranes such as substrate, where the end product becomes a discrete solar cell roof. Midsummer BOLD fits flat and sloping roofs and follows the shape of the roof, regardless of whether it is flat or vaulted.

BOLD is a CIGS photovoltaic solar module. CIGS stand for Copper-Indium-Gallium-Selenium, a tetrahedrally bonded semiconductor, with chalcopyrite crystal structure that converts the energy of light directly into electricity by the photovoltaic (PV) effect. The CIGS absorber and all other materials that form the finished solar cell are deposited on a stainless-steel substrate. The cells are then connected in series via a front contact grid, which is screen printed, using a power mesh technology. This consists of a dense array of wires for current collection instead of the regular ribbons, which reduces the resistive losses and increases the active area.

CIGS solar cells are manufactured by sputtering the material onto 156×156 mm stainless steel substrates. The solar cells from Midsummer are free of cadmium, a toxic material usually used in CIGS and other thin film solar cells. Flexible CIGS solar modules are gaining increasing market share thanks to its high efficiency, low weight, flexibility and durability.