world record solar cell with 44.7% efficiency
 
world record solar cell with 44.7% efficiency world record solar cell with 44.7% efficiency
sep 26, 2013

world record solar cell with 44.7% efficiency


world record solar cell with 44.7% efficiency

image © fraunhofer ISE

 

 

 

the fraunhofer institute for solar energy systems ISE, soitec, CEA-leti and the helmholtz center berlin have achieved a new world record for the conversion of sunlight into electricity using a new solar cell structure with four solar subcells. a new record efficiency of 44.7% was measured at a concentration of 297 suns, indicating that 44.7% of the solar spectrum’s energy – from ultraviolet through to the infrared – is converted into electrical energy. these solar cells are used in concentrator photovoltaics (CPV), a technology which achieves more than twice the efficiency of conventional PV power plants in sun-rich locations. several cells made out of different III-V multi-junction semiconductor materials are stacked on top of each other causing the single subcells to absorb different wavelength ranges of the solar spectrum.

 

 

 

external quantum efficiency of the four-junction solar cell
image © fraunhofer ISE

 

 

 

spectrum at a concentration of 297 suns
image © fraunhofer ISE

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