Developments in I
Developments in III-V multi conjunctions solar cells at high efficiency and the connection of cost and efficiency of centralized and regular cells
F. Maleki*, A. Taherkhani
Department of Physics, Faculty of Science, Takestan branch, Islamic Azad University, Takestan, Iran.
*Corresponding author: email@example.com, Tel +98-910-2911161
Abstract: between reincarnations energies such as wind, biomass, see and other, solar energy have been attract much more attention at research institutions. Lower cost of using this energy is possible by reaching high efficiency at centralized systems. This paper discusses research approaches of III-V multi conjunction solar cells for reaching high efficiency. Metamorphic Ga0.44In0.56P/Ga0.92In0.08As/Ge three conjunction cells reached 47.7% efficiency at 240sun under standard spectrum (AMI/5D, low AOD, 24w/cm2, 25°C) and three conjunctions cells of synchronized lattice reached 40.1% efficiency at 135sun. The 3 conjunction metamorphic device is the first cell with the efficiency higher than 40%, and for any photovoltaic cell till now has the highest solar change efficiency. Many optimal band gaps for maximum energy transformation are possible with metamorphic semiconductor materials. A cost analysis shows that reaching very high efficiency for affordable photovoltaic is vital because of efficiency effect on system costs and module packing.
[F. Maleki, A. Taherkhani. Developments in III-V multi conjunctions solar cells at high efficiency and the connection of cost and efficiency of centralized and regular cells. Life Sci J 2013;10(1):920-923]. (ISSN: 1097-8135). http://www.lifesciencesite.com.