Annealsys AS-ONE High-Vacuum Rapid Thermal Annealing Furnace

Overview

The Annealsys AS-ONE is a high-vacuum rapid thermal annealing (RTA) furnace engineered for precision thermal processing in semiconductor R&D, pilot-line fabrication, and advanced materials development. Based on resistive infrared heating via high-intensity halogen tubular lamps and coupled with a stainless steel cold-wall chamber architecture, the system delivers exceptional thermal responsiveness and spatial uniformity. Its core operating principle relies on transient radiant heating—where substrates absorb near-infrared radiation directly, minimizing thermal inertia and enabling sub-second temperature transients. This physics-based approach ensures minimal thermal budget exposure while maintaining strict control over peak temperature, dwell time, and ramp/cool profiles—critical parameters for dopant activation, defect engineering, interfacial reaction control, and phase transformation in thin-film and bulk semiconductor structures.

Key Features

• Infrared halogen tubular lamp array with optimized spectral output (700–1200 nm) for efficient absorption by silicon, SiC, GaN, and metal films
• Stainless steel cold-wall vacuum chamber with water-cooled jacket, enabling stable base pressure down to <1×10⁻⁶ mbar when equipped with optional turbomolecular pumping
• Dual-mode temperature regulation: thermocouple feedback for closed-loop ramp control below 900°C, supplemented by non-contact pyrometric measurement (0.5–1.1 µm spectral band) above 600°C for improved accuracy and repeatability
• Fast digital PID controller with programmable multi-segment recipes (up to 99 steps), real-time deviation monitoring, and automatic fault logging
• Atmospheric, low-pressure, and high-vacuum process flexibility—supports N₂, Ar, O₂, NH₃, H₂, forming gas, and custom gas mixtures via five independently controlled MFCs (0–1000 sccm range)
• Ethernet-connected PC interface with deterministic data acquisition (≥10 Hz sampling rate), timestamped event logging, and export-compatible CSV/BIN formats
• Modular footprint design: floor-standing configuration with integrated gas manifold, power supply, and cooling unit—reducing cleanroom space requirement without compromising service access

Sample Compatibility & Compliance

The AS-ONE accommodates a broad spectrum of substrate formats and material systems, including but not limited to: single-crystal silicon wafers (50–300 mm), compound semiconductor substrates (GaAs, InP, GaN-on-sapphire, AlN), silicon carbide (4H-SiC, 6H-SiC), polycrystalline silicon for photovoltaics, fused silica and borosilicate glass, metallic foils (Ni, Ti, Mo), polyimide and PI-based flexible substrates, and high-temperature susceptors (graphite, SiC-coated graphite). All hardware and firmware are designed in accordance with CE directives (2014/30/EU EMC, 2014/35/EU LVD) and conform to IEC 61000-6-2/6-4 immunity/emission standards. When operated with validated software modules and audit-trail-enabled data logging, the system meets functional requirements for GLP and GMP environments—including electronic signature support and 21 CFR Part 11 compliance for regulated semiconductor process development.

Software & Data Management

The AS-ONE is operated via Annealsys’ proprietary RTAControl Suite—a Windows-based application supporting recipe creation, remote monitoring, and post-process analysis. The software implements hierarchical user roles (Operator, Engineer, Administrator), encrypted database storage, and configurable alarm thresholds with email/SNMP notification. Process data—including temperature vs. time curves, gas flow traces, vacuum pressure logs, and lamp power profiles—are stored with millisecond-level timestamps and linked to unique batch IDs. Raw datasets are exportable in ASCII-compatible formats for integration into LIMS, MES, or statistical process control (SPC) platforms. Optional IQ/OQ documentation packages are available for qualification in ISO 9001-certified facilities.

Applications

• Ion implantation activation annealing in CMOS, FinFET, and nanowire devices
• Ohmic contact formation for III–V compounds (e.g., Ti/Pt/Au on GaAs) and wide-bandgap semiconductors (e.g., Ni/Ti on 4H-SiC)
• Rapid thermal oxidation (RTO) for ultra-thin gate oxides (<2 nm) and interfacial layer engineering
• Rapid thermal nitridation (RTN) to form SiON and high-k dielectric stacks
• Selenization and sulfurization of CIGS and CZTS absorber layers under controlled chalcogen partial pressures
• Graphene synthesis via catalytic CVD on Cu/Ni foils with precise ramp-cool sequencing
• Sol-gel-derived oxide film densification (e.g., HfO₂, Al₂O₃) and crystallization (e.g., PZT, BST)
• Spin-on dopant drive-in and redistribution profiling for selective emitter formation in PERC solar cells

FAQ

What vacuum level can the AS-ONE achieve without optional pumping?
With standard mechanical roughing pump, base pressure reaches ≤5×10⁻³ mbar. With optional turbomolecular pump + cryo-trap, ultimate pressure improves to <1×10⁻⁶ mbar.
Is wafer backside heating supported?
Yes—optional radiant backside heater module enables symmetric thermal profile control for ultra-thin (<100 µm) or bonded wafers.
Can the system be integrated into a cluster tool environment?
Yes—RS-232, Ethernet/IP, and SECS/GEM protocol support is available upon request for factory automation integration.
Does the AS-ONE support temperature uniformity mapping per SEMI F47?
Yes—integrated 9-point thermocouple array (with calibration certificate) enables full-wafer uniformity verification compliant with SEMI F47-0218.
What maintenance intervals are recommended for lamp arrays and MFCs?
Halogen lamps: replacement every 1,500–2,000 operational hours; MFCs: annual recalibration traceable to NIST standards.