Optical filtering of solar radiation to increase performance of concentrator systems

M. Sabry, R. Gottschalg, T.R. Betts, M.A.M. Shaltout, A.F. Hassan, M.M. El-Nicklawy, D.G. Infield

Research output: Contribution to conferencePaper

30 Citations (Scopus)


Solar cell overheating due to high irradiation levels is a significant problem facing concentrator systems. Some form of cooling is needed to maintain the highest possible performance of such systems. Liquid filters may be used to inhibit unwanted solar radiation from reaching the cell and thus limit cell-operating temperatures. The performance of the cooling will depend on the optical properties of the liquid filter applied, as illustrated in this paper on the basis of different filters. An ideal filter is identified and its effects on the systems are described. It is-shown, on the basis of system modeling calculations, that cell performance could be increased by up to 25% using an ideal filter. Such a system can reach an efficiency of 22% in a. realistic working environment compared to a STC value of 16%. The absorbed part of the incident radiation can be used as heat source, so adding to the potential initial value of the system.
Original languageEnglish
Number of pages4
Publication statusPublished - May 2002
Event29th IEEE Photovoltaic Specialists Conference - New Orleans, United States
Duration: 19 May 200224 May 2002


Conference29th IEEE Photovoltaic Specialists Conference
Country/TerritoryUnited States
CityNew Orleans


  • optical filtering
  • solar radiation
  • increase performance
  • concentrator systems
  • cooling
  • temperature
  • space technology
  • solar radiation
  • renewable energy resources
  • physics
  • photovoltaic cells
  • optical filters
  • filtering
  • costs


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