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KSA metrology tool has UV capabilities


Emissometer ex situ metrology tool provides even better carrier characterisation

k-Space Associates has announced that the kSA Emissometer ex situ metrology tool for MOCVD carrier characterisation now has ultraviolet (UV) photoluminescence (PL) capabilities for even better carrier evaluation.

The new UV PL feature allows wafer carrier manufacturers, reactor manufacturers, and epi houses to further evaluate their wafer carriers before use and throughout their lifecycle. This system uses a 365 nm LED focused on the wafer carrier and a filtered photodetector focused on the excitation point. The filter cuts off light for wavelengths shorter than 409 nm. This results in the ability to evaluate contamination on the wafer carrier.

The kSA Emissometer is used to determine the quality of the carrier bake after the deposition run, quantitative determination of real surface emissivity for temperature set-point adjustments, and microcrack detection. The kSA Emissometer also provides statistical analysis of each individual pocket and web for carrier quality evaluation.

Darryl Barlett, k-Space CEO, states: “This tool gives carrier manufacturers, reactor manufacturers, and epi houses a competitive edge because it allows them to quantify their carrier quality, ultimately leading to increased device uniformity and increased yield.”

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