AIXTRON AIX G5 WW C Chemical Vapor Deposition System
| Brand | AIXTRON |
|---|---|
| Origin | Germany |
| Model | AIX G5 WW C |
| Heating Method | Hot-Wall |
| Substrate Compatibility | 150 mm (8×150 mm configuration) |
| Reactor Type | Planetary Rotating Reactor with Hot Wafer Transfer |
| Temperature Control | Wafer-Level |
| Process Automation | Cassette-to-Cassette Handling |
| Uniformity Control | AutoSat™ Dynamic Saturation Compensation |
| Factory Interface | SECS/GEM compliant |
| Deposition Rate | ~nm/min (material- and process-dependent) |
| Application Focus | SiC, GaN, and other compound semiconductor epitaxy |
| Compliance | Designed for integration into ISO Class 5–7 cleanroom environments and compatible with SEMI S2/S8 safety and automation standards |
Overview
The AIXTRON AIX G5 WW C is a high-throughput, hot-wall chemical vapor deposition (CVD) system engineered for the reproducible growth of high-quality epitaxial layers on compound semiconductor substrates—particularly silicon carbide (SiC) and gallium nitride (GaN). Leveraging planetary wafer rotation within a thermally symmetric hot-wall reactor architecture, the system enables precise thermal management at the wafer level while maximizing precursor gas utilization efficiency. Its design prioritizes both scalability and process fidelity: the 8×150 mm single-wafer configuration supports rapid cycle times without compromising uniformity or interface control—critical for power electronics, RF devices, and high-voltage applications demanding atomic-level layer integrity.
Key Features
- Planetary rotating reactor with integrated hot wafer transfer—minimizes thermal transients during loading/unloading and ensures stable growth initiation.
- Wafer-level temperature control via multi-zone radiant heating and real-time pyrometric feedback, enabling ±0.5 °C thermal stability across 150 mm wafers.
- AutoSat™ dynamic saturation compensation algorithm actively adjusts precursor flow and pressure profiles to maintain consistent supersaturation conditions throughout each run—key for thickness and doping uniformity across full wafers.
- Cassette-to-cassette automated handling compliant with SEMI E47.1 standards; fully integrated with front-end EFEM modules for seamless fab integration.
- SECS/GEM-compliant factory interface supporting host-directed scheduling, recipe download, status reporting, and event logging per SEMI E30/E37 specifications.
- Modular gas delivery architecture with mass flow controllers (MFCs), ultra-high-purity stainless-steel lines, and automated purge sequences meeting ISO 8573-1 Class 1 particle and moisture requirements.
Sample Compatibility & Compliance
The AIX G5 WW C accommodates 150 mm (6-inch) wafers—including SiC, Si, sapphire, and bulk GaN substrates—with optional adaptability for future 200 mm expansion paths. All wetted surfaces are passivated or electropolished to minimize metallic contamination. The system meets SEMI S2-0218 safety guidelines for hazardous gas handling and includes redundant interlocks, leak detection, and emergency purge protocols. It is designed for operation in ISO Class 5–7 cleanrooms and supports GLP-aligned process documentation when paired with validated data acquisition software.
Software & Data Management
Controlled by AIXTRON’s proprietary EPISON® platform, the system provides deterministic recipe execution, full parameter logging (temperature, pressure, flows, RF power where applicable), and audit-trail functionality compliant with FDA 21 CFR Part 11 requirements. Raw sensor data is timestamped and stored in HDF5 format for traceability. Optional integration with MES systems enables real-time yield correlation, SPC charting, and OEE tracking. All software updates follow IEC 62443-3-3 cybersecurity framework principles.
Applications
Primary use cases include: homoepitaxial and heteroepitaxial growth of 4H-SiC for high-power Schottky diodes and MOSFETs; AlGaN/GaN heterostructures for RF HEMTs; and doped/undoped GaN templates for micro-LED and laser diode fabrication. The system supports both atmospheric and low-pressure CVD modes, accommodating chloride-based (e.g., TMGa, SiH₄, C₃H₈) and hydride-based (NH₃, SiH₄) chemistries. Its thermal symmetry and gas dynamics are optimized for low-defect-density growth—validated through cross-sectional TEM and XRD rocking curve analysis in customer qualifications.
FAQ
What substrate sizes does the AIX G5 WW C support?
Standard configuration supports 150 mm wafers; mechanical and software adaptations for 200 mm are available under custom engineering engagement.
Is the system qualified for SiC power device manufacturing?
Yes—it has been deployed in multiple volume SiC epitaxy lines with demonstrated repeatability in thickness (±1.2 %), doping (±3 %), and surface roughness (RMS < 0.2 nm) across >1,000 production runs.
Does the AutoSat™ function require manual calibration?
No—AutoSat™ operates autonomously using in-situ optical reflectance and pressure-derived saturation metrics; calibration is embedded during initial system commissioning and verified annually per AIXTRON’s PQ protocol.
Can the system be retrofitted with in-situ metrology?
Yes—options include laser interferometry (for real-time thickness), spectroscopic ellipsometry (SE), and residual gas analysis (RGA); all integrate natively into EPISON® control logic.
What cleanroom class is required for installation?
ISO Class 6 is recommended for optimal particle performance; Class 5 is supported with additional filtration and airflow tuning per site-specific qualification.
