Typical Performance of 39% Efficiency Under Concentrated Illumination
Emcore's Concentrating Triple-Junction (CTJ) solar cells with n-on-p polarity are built on germanium substrates and incorporate a proprietary antireflective coating, that provides low reflectance over a wavelength range of 0.3 to 1.8µm. These high-efficiency Solar Cells are characterized and optimized for terrestrial applications under concentrated incident illumination (Up To 1500 Suns) and high current densities.
Features

• Triple-Junction High-Efficiency Solar Cells on Germanium Substrate for Terrestrial Concentrated Photovoltaic Applications
• Proprietary Antireflective Coating Providing Low Reflectance over Wavelength Range 0.3 to 1.8µm
• Characterized for Terrestrial Applications Under Concentrated Illumination (Over 1500 Suns)
• 100% tested at 1000 Suns
• Weldable or Solderable Contacts, Front and Back
• Standard 1x1 cm2 (Designated Aperture Area)
• Customer Specific Sizes Available
• Available in Cell and Application-Specific Configurations
• Application-Specific Grid Design Service to optimize performance in customer CPV systems
• Available as whole wafer or known-good die on tape and reel

Typical Performance of 39% Efficiency Under Concentrated Illumination
EMCORE's terrestrial CPV receiver assemblies incorporate our industry leading CTJ solar cell with protective bypass diodes and electrical connectors onto a high thermal conductivity ceramic substrate. This terrestrial receiver assembly is easily integrated into virtually any system design and functions as the photovoltaic engine of concentrating PV systems.
Features

• The receiver assembly utilizes EMCORE’s 1 cm˛ Concentrating Triple Junction Solar Cell (CTJ)
• Cladded ceramic substrate with high thermal conductivity
• Metalized back plane is electrically isolated from the front side metallization
• The CTJ cell is interconnected with gold (Au) ribbon bonds
• High-speed automated assembly with low labor content