Solar Junction’s Proprietary Materials Platform

Solar Junction’s patented lattice-matched solar cell technology increases yield, reliability, and efficiency by avoiding strain and defects common with metamorphic structures. Optimizing material quality is essential to reducing epitaxial growth and wafer processing costs, and for ensuring long-term reliability.

Lattice Matching

Multi-Junction Solar Cell

Solar Junction’s multi-junction solar cell is comprised of multiple individual solar cells grown on top of each other. Each sub-cell is composed of a unique material that absorbs a specific portion of the solar spectrum. The top cell absorbs blue light, while the bottom cell absorbs infrared light. Unlike the single junction silicon cell, Solar Junction’s multi-junction technology enables a roadmap to ever-increasing efficiency gains. By adding additional sub-cells designed to absorb increasingly narrow segments of the solar spectrum, we are in the unique position to drive solar cell efficiencies to 50% and beyond.

Multi-Junction #1
Multi-Junction #2

Bandgap Tunability

Solar Junction’s proprietary dilute nitride material is bandgap tunable from 0.8 eV to 1.25 eV, enabling high material quality for solar cells, a superior efficiency roadmap, and a wide range of applications in the infrared technology space. The following chart demonstrates:

Quantum Efficency


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