Four-junction spectral beam-splitting photovoltaic receiver with high optical efficiency (pages 61–72)
Bernhard Mitchell, Gerhard Peharz, Gerald Siefer, Marius Peters, Tobias Gandy, Jan Christoph Goldschmidt, Jan Benick, Stefan W. Glunz, Andreas W. Bett and Frank Dimroth
Article first published online: 14 JUL 2010 | DOI: 10.1002/pip.988
A photovoltaic receiver using the geometry of a 45°-parallelepiped to realize a light trapping, spectral beam-splitting architecture that includes three solar cells and two beam-splitters is presented. The receiver splits the solar spectrum into smaller energy parts and converts each of these parts with a solar cell of an appropriate band gap. The paper discusses band gap engineering, optical design and shows extended characterization data of the receiver including the used beam splitters and solar cells.