All posts by AccuStrata

Monitoring and control of chemical composition of InGaN layers during MOCVD

Posted by | R & D

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Metal-Organic Chemical Vapor Deposition (MOCVD) epitaxial processes are used to deposit the GaN, InGaN, AlGaN and other wide band-gap semiconductor thin films making up the buffer, quantum well, and cap layers of the next generation high-brightness LEDs (HB-LEDs) for Solid State Lighting (SSL). Non-uniformity of the central wavelength over the wafers, run-to-run and reactor-to-reactor non-repeatability are primary contributors to reduced manufacturing yield. On the epitaxial level, non-uniform device performance results from the variations of chemical composition and thickness of the individual InGaN quantum well layers. Being extremely thin, the individual quantum well layers remain beyond the resolution of the standard optical monitoring techniques. Read More

Advanced broad spectrum endpoint detection technology for stripping and etching systems

Posted by | R & D

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Advances in computational and spectroscopic technology have created great opportunity to produce an endpoint detection system that can accurately and reliably determine the endpoint of a process at relatively low cost. Availability of such a system is hindered by the saturation of the endpoint market by old, expensive technology that corners the market. AccuStrata is developing a breakthrough endpoint detection system that will exhibit superior performance over current major market players, as well as offer advanced data interpretation for more accurate and reliable performance. Read More

Wire handheld Fluorometer and Rapid Awareness for Bacteria detection

Posted by | R & D

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Despite significant advances in communal hygiene practices and food safety measures, foodborne illness is still a significant and deadly issue in the United States. The largest barriers to widespread foodborne illness detection are time to detection, speed of information dissemination and cost of testing. To achieve a wide reaching foodborne illness detection network, a system is needed that implements state-of-the-art network communication, biological detection methods and modern portable system technology. Read More

Fiber-optic Based Distributed Atomic Absorption Spectroscopy for Film Growth Monitoring

Posted by | R & D

rd2AccuStrata is utilizing its expertise in thin film growth monitoring and optical system design to create a breakthrough AAS product, installable on a variety of PVD systems, to provide accurate and reliable deposition rate measurements for dynamic feedback control of the PVD systems. The system comprises two major parts – a reconfigurable hardware module located outside the PVD and a portable fiber-optic-based distributed monitoring frame installed in the area surrounding the deposited substrate. Read More