GaAs Solar Cell 5mm x 5mm

Hemu's state-of-the-art technology and its production capabilities enable multi-junction solar cells based on III-V compound semiconductor materials optimized for CPV applications to achieve the highest efficiency conversion of sunlight into electric current, available in large-scale production.

Compared to silicon, III-V materials enable high-yield operation with the lowest temperature coefficients, even at concentrations of hundreds of solar. This coefficient is approximately four times lower than for crystalline silicon.

Hemu has been providing its customers with triple-junction concentrating solar cells with efficiencies up to 40% (at 500 times solar concentration).

In order to meet the individual requirements of various photovoltaic systems, Hemu offers standardized solar cells with an effective area of 10×10 mm² or 5×5 mm² as bare solar cells or modules. In addition, various customized solutions such as adjustment of solar concentration, cell shape and size, special designs, etc. are available upon request and using full-wafer technology. Hemu cells have been successfully tested with all currently used optical concentration systems (Fresnel lenses with or without secondary optics, parabolic reflectors, systems with spectral splitting, etc.).