Spectral splitting

Spectral selective filters
© Fraunhofer ISE

Spectral selective filters can be used to split the solar spectrum. Each part is directed to the solar cell, which can convert them most efficiently into electricity.

The aim of spectral splitting is to split the solar spectrum and guide individual bands of the solar spectrum onto solar cells that are optimized for those specific bands of light. Since each solar cell can be individually optimized, this permits extremely high efficiencies to be reached.

A variety of different system configurations are currently under scrutiny at Fraunhofer ISE. Activities range from developing new system architectures through simulating and manufacturing optical components to fabricating optimized solar cells, systems production and characterizing entire systems.