Produits

Our introductory product is fundamental as it brings to the market the first Multi-directional ARC coating for glass substrates. This truly innovative product consists of a thin film monolayer densely packed with micro lenses. As opposed to the natural tendency of current PV systems to deflect sunlight back, our thin film would actually grip sunlight into solar cells to turn added electrical charges per cell. Other benefits include a non-dependency to cells patterning or solar angular positioning to attain optimum sunlight collection, and the ability to collect more sunlight under all weather conditions, even on cloudy days when sunlight is diffused.

For the PV market, costs implications and electrical output is significant. First and foremost, our ARC product translate into higher electrical charges per cell, lowering installation costs and rendering more space available to install PV systems per roof top, all leading to lower dollar invested per watt produced. This product can be embedded into PV systems at different stages of production, including the possibility to retrofit current systems to improve their efficiency at little cost.

Patterning of Poly-Si wafers front surface. It is known that wafers embedded in solar cells to turn sunlight into electrical charges have an intrinsic tendency to deflect a significant amount of light away when not treated. Current processes to minimize optical loss at this layer involve chemical bath, mechanical grooving or lithography. These processes are either inefficient, expensive or involve waste and the use of hazardous chemicals. Our product is intended to create regular patterning enabling increased absorption of sunlight. More precisely, our product cause light to be less scattered and reflected by the wafer front surface, thereby improving overall efficiency and, when compared to current processes, is expected to lower overall manufacturing costs of PV systems while eliminating potential environmental issues.

Photonic back reflector relates to how photons, depending on their wavelengths, can be harvested more efficiently to turn an increasing amount of sunlight into an electrical charge. In a nutshell, the issue is that photons with short visible wavelengths (blue light) can be easily absorbed in frontal regions of solar cells, but photons with longer wavelengths  (red photons) will naturally pass through frontal regions and, to be absorbed, will typically need a back reflector to bounce back at semiconductor layers to turn their light into electrical charges. This interface must be designed to help photons rebound to have another chance to be absorbed and transformed into electrical charges. Current back reflectors are not necessarily efficient leaving as much as 20% of photons uncaptured. Our layers reflect light more efficiently and redirect it in order to enhance light path inside the solar cell for an overall efficiency improvement.