The CnCV system utilizes a novel constant surface potential corona charging, which enables the precision required over a large voltage range. The patented technology includes charge- and photo-assisted modes, especially suited for speed and precision on WBG materials and structures, including SiC, Ga2O3, GaN, and AlGaN/GaN HEMT. Additionally, Corona-Kelvin characterization includes electrical properties of dielectrics and interfaces of films on SiC and GaN epi layers. An automated top-side edge contact (TSEC) is also available enabling characterization of WBG on insulating/semi-insulating substrates. Automated bias-temperature stress (BTS) measurements are also available with the CnCV system, providing a fast, noncontact way to quantify the reliability of passivated SiC and GaN. 

Beyond typical CV type parameters, the full wafer corona approach allows for QUAD (quality, uniformity, and defect) mapping. The electrical defect imaging, QUAD-EDI, mode is especially designed for SiC. It provides a unique means for quick screening of epi electrical defectivity enabling improvement in device yield prediction. 

Figure 1. QUAD-EDI Map on final metallized device wafer after Merged Schottky PiN diode fabrication identifying failed dies.

The PrimaScan system utilizes laser scatterometry and imaging techniques leveraging proprietary optics and sensing technologies for reliable inspection of nanometer sized defects on a variety of opaque and transparent/semi-transparent substrates suitable for either R&D or high-volume manufacturing environments. With multiple detection channels, the system can detect, measure, characterize and image surface particles, scratches, pits, bumps, surface contamination, film or bulk wafer stress, voids/inclusions, including chips and cracks at the wafer edge.

The PrimaScan system addresses challenges in both incoming wafer quality control and in inline process monitoring. Capable of handling multiple substrate materials, it uniquely addresses inline process defect and contamination monitoring in wafer-based production environments.

Designed with versatility in mind the PrimaScan system can handle a variety of wafer sizes and substrate types

The NSX 330 system features robust platform technology with high-acceleration staging, high-speed multi-processor computing and flexible software. With over 1,000 installation worldwide, the NSX 330 System offers 2D inspection and metrology at high throughput and a broad portfolio of 3D sensors supporting critical advanced packaging applications. These include wafer-level metrology for micro bumps, RDL, kerf, overlay, and through silicon via (TSV) in a single wafer load.

Accommodating wafers from 100mm to 330mm, the system features a versatile objective turret, programmable light tower, and multiple dark field illumination modes. Additional features include resolution flexibility, unique handling solutions, and comprehensive software for recipe sharing and offline analysis. The NSX 330 system, with optional edge and backside inspection via the EB40 module, provides a comprehensive all-surface inspection solution packaging technology challenges.

The F30 automated defect inspection system combines high resolution and throughput to drive fab yield and productivity. A five-objective turret enables resolution-throughput flexibility, while its multi-channel illumination including brightfield, darkfield, high-angle ring light, and IR-Review addresses the requirements for today’s multi-process inspection applications. Equipped with an advanced productivity suite (waferless recipe creation, simultaneous FOUP, recipe server and tool matching), the F30 System redefines inspection cost of ownership expectations. The system can handle 100mm – 300mm wafers can be paired with the edge and backside module (EB40) to provide an all-surface inspection solution.

The Celero PL system utilizes a laser-based phase detection and imaging capability that leverages custom optics and image processing algorithms to enable best in class throughput and sensitivity for silicon carbide and gallium nitride-based materials on 100mm to 300mm wafer sizes. Leveraging multiple light sources and sensor channels, the system can detect, measure and image a broad variety of subsurface crystalline defects, associated with bulk wafers and epitaxial layers, surface particles, scratches, pits, surface contamination, stains, point or bulk wafer stress, voids/inclusions, including chips and cracks at the edge of the wafer.

The PrimaScan R&D system offers a smaller spot size and higher pixel resolution than its high volume production counterpart tools. The flexibility in sample handling options combined with the multiple sensing channels and higher resolution imaging makes this the ideal tool for R&D and lab environments. Similar to the other tools in the PrimaScan line, the PrimaScan R&D system offers reliable inspection of nanometer sized defects on a variety of opaque and transparent/semi-transparent substrates and samples suitable for either R&D or lab environments. The system can detect, measure, characterize and image surface particles, scratches, pits, bumps, surface contamination, film or bulk wafer stress, voids/inclusions, including chips and cracks at the wafer edge.

Designed with versatility in mind the PrimaScan R&D system can handle a variety of wafer sizes and substrate types including film frame, photomask and sample tray.