Technical Specifications:

• Material: High-purity aluminum, anodized aluminum, or specialized ceramics (Yttria-coated for corrosion resistance).
• Hole Pattern: Hundreds to thousands of micro-machined holes (orifices) with specific diameter gradients to tune gas flow uniformity.
• RF Power Handling: Capable of coupling 13.56 MHz (or dual frequency) RF power ranging from 500W to 3000W to ignite and sustain plasma.
• Temperature Control: Integrated heater zones (typically 50°C to 200°C) to prevent precursor condensation and ensure reaction kinetics.
• Sealing Mechanism: Utilizes elastomer O-rings or metal gaskets (C-seals) for vacuum integrity up to 10^-6 Torr.

Functional Features:

• Plasma Ignition: Acts as the powered electrode to generate high-density plasma for Plasma-Enhanced CVD (PECVD).
• Flow Tuning: Variable orifice sizing allows for edge-to-center flow correction to compensate for gas depletion effects.
• In-situ Cleaning: Designed to withstand aggressive cleaning plasmas (e.g., NF3, O2) used to remove deposited films without degrading the surface.
• Thermal Management: Active cooling channels prevent overheating of the gas lines and ensure stable process temperatures.
• Particle Mitigation: Smooth internal surfaces and hard-coat anodization reduce flaking and particle generation.

Application Scenarios:

• Dielectric Deposition: Deposition of Silicon Dioxide (SiO2), Silicon Nitride (SiN), and low-k dielectrics for inter-layer insulation.
• Epitaxial Growth: Used in selective epitaxy tools for growing single-crystal silicon layers.
• Passivation Layers: Deposition of passivation films to protect circuitry from moisture and contaminants.
• Advanced Logic Nodes: Critical for depositing stress-liner films and spacer materials in FinFET and GAA (Gate-All-Around) transistor architectures.