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SRI International - American Nonprofit Research Institute

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February 17, 2022

Epitaxial MOCVD Growth and III-V Wafer Processing Services

SRI provides tailored, customer-focused foundry services for epitaxial growth and fabrication of compound-semiconductor optoelectronic devices. Our dedicated III-V wafer foundry includes expertise and facilities for fabrication of custom devices.

High-quality epi-material is grown within a production-level metal-organic chemical vapor deposition (MOCVD) reactor configured for the InP, GaAs and GaSb material systems. This epitaxial-growth reactor has large wafer capacity (6 x 2-in. diameter, 3 x 3-in. diameter, 1 x 4-in. or 1 x 6-in. diameter), excellent uniformity, advanced in situ monitoring for improved reproducibility, and materials flexibility due to multiple sources and double dilution networks.

Capabilities

Our expert crystal growers have produced a large number of advanced III-V structures including:

• Low dark-current p-i-n detectors
• High power laser emitters
• Distributed feedback (DFB) lasers operating from 750 nm to 2100 nm
• Quantum cascade devices
• Low-threshold vertical-cavity surface-emitting lasers (VCSELs)
• Thermophotovoltaic cells
• We have also grown unique structures on silicon and other non III-V substrates.

In addition, the SRI facility maintains characterization tools to ensure high-quality epi-material including:

• Field emission scanning electron microscopy (SEM)
• High-resolution x-ray diffraction (XRD) analysis to determine lattice constant and layer composition
• Mapping photoluminescence to measure bandgap and material quality/uniformity
• Hall measurements to establish doping densities and carrier mobilities
• Electrochemical Capacitance-Voltage (ECV) profiling to measure carrier concentration versus depth

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