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MOCVD equipped with k-space in situ stress evolution/growth monitoring system
Thickness Monitoring
- Reflectance measured during growth
 - Changes in reflectance used to determine material thickness and growth rate
 
Stress Monitoring
- Curvature of wafer measured using laser array
 - Stress calculated using Stoney Equation to monitor real-time stress evolution during growth
 
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| Schematic of laser array used to measure wafer bowing | k-space ICE tool mounted on D180 | Wafer curvature/stress evolution during the growth of GaN on Si(111) | 
            
    




