Custom Blanket Wafers Service

Blanket wafers are semiconductor wafers that feature a uniform thin film layer deposited across the entire wafer surface, without pattern structures. Unlike bare wafers—which consist solely of a polished substrate—blanket wafers include a continuous deposited material layer, commonly metal or dielectric, such as polysilicon, silicon dioxide (SiO₂), silicon nitride (SiN), copper (Cu), aluminum (Al), tungsten (W), or advanced barrier/low-k stacks. Because they offer a uniform platform for measurement and experimentation, blanket wafers are widely used in semiconductor fabs, equipment OEMs, and R&D labs. At Alfa Chemistry, we offer premium custom wafer services. Among these, custom blanket wafers service has become a core offering, supporting equipment calibration, metrology validation, process development, and lithography/etch characterization for research institutions, fabs, and material suppliers worldwide.

Ou services provide comprehensive customization to meet diverse application requirements:

Each wafer undergoes rigorous metrology and inspection to ensure thickness uniformity, surface quality, and material integrity.

Our service leverages state-of-the-art equipment and proprietary technologies:

Deposition Technologies

• Physical vapor deposition (PVD): for metals and conductive films, offering excellent adhesion and controlled thickness
• Chemical vapor deposition (CVD): for high-quality dielectrics and semiconductor films
• Atomic layer deposition (ALD): for ultra-thin, conformal films with atomic-scale thickness control

These technologies are supported by precision process control systems, enabling nanometer-scale uniformity and low defectivity across wafer surfaces

Precision Metrology Tools

We employ advanced metrology tools (such as film-thickness ellipsometry, X-ray reflectometry (XRR), four-point probe resistivity measurement, AFM) for thickness measurement (ellipsometry, reflectometry), uniformity mapping, surface roughness and defect inspection. These tools provide the objective data required to validate blanket film performance and ensure that wafers match your technical specifications.

Surface Preparation and Cleanroom Processing

Blanket wafer preparation takes place in controlled cleanroom environments to minimize contamination and surface defects.

Our custom services can cater to the following Studies:

• Material Characterization: Researchers test dielectric constants, stress behavior, and adhesion properties using uniform wafer coatings.
• Device Prototyping: Blanket wafers provide a platform for experimental device fabrication, such as transistors, MEMS, or sensors.
• Equipment Qualification: Semiconductor equipment vendors use blanket wafers to calibrate and validate deposition, etching, or polishing tools.
• Advanced Packaging: Uniform wafers can serve as substrates for interposers, TSV (Through-Silicon Via) development, and 3D integration research.
• Metrology and Testing Standards: Blanket wafers act as reference standards for thickness, surface roughness, and material composition measurements.

By providing high-quality, fully customizable blanket wafers, our service supports innovation across multiple layers of the semiconductor ecosystem, from academic research to industrial-scale manufacturing.