The integration of semi-transparent photovoltaic modules into large glass surfaces represents an attractive approach to improving the energy efficiency of buildings. On the one hand, this generates electricity through photovoltaics. On the other hand, the heat input into the building, which would otherwise have to be cooled at great expense, is reduced. Typical areas of application include floor-to-ceiling glazing in atriums and halls, as well as noise barriers and glass roofs.
The exhibit from Fraunhofer ISE for glasstec 2024 demonstrates the great design freedom in terms of shape and colour. The matrix shingle technology used enables a flexible cell layout. Narrow cell strips are applied fully automatically and connected with a conductive adhesive. Cost-effective standard silicon cells with a high degree of efficiency can be used. The colour design is created using MorphoColor® layers, which are applied to the glass. Due to the full-surface coating, no precise alignment of the cell matrix to the panes is necessary. While the coloured appearance is visible from the outside, a clear view of the outside remains possible from the inside between the cells. Due to the high transmission of the MorphoColor® layers, a degree of efficiency in excess of 90% can be achieved in comparison with a module without a coloured layer.
