Electron Beam Evaporation Thin Film System

The EBE-Series Electron Beam Evaporation System is engineered for physical vapor deposition (PVD) of high-melting-point metals, dielectrics, and optical materials. By utilizing a magnetically deflected, focused electron beam directly onto source materials within water-cooled crucibles, the system achieves high deposition rates while maintaining a contamination-free vacuum environment.

Targeted at production lines and advanced research laboratories, this platform supports multi-layer thin-film fabrication with precise rate control, making it suitable for optical interference filters, semiconductor metallization, and wear-resistant coatings.

Magnetic Beam Deflection: 270° bending e-gun geometry keeps the filament shielded from direct line-of-sight material spitting, preventing short circuits and filament degradation.

Closed-Loop Rate Control: Integrates multi-channel quartz crystal sensors with proportional-integral-derivative (PID) algorithm output to regulate e-emission current and deposition speed dynamically.

Modular Crucible Deck: Indexing mechanism utilizes ferrofluidic feedthroughs and direct-drive stepper motors for rapid, particle-free crucible switching under vacuum.

Interlocked Safety Architecture: Hardware-level interlocks monitor cooling water flow, vacuum thresholds, and chamber door status to protect operators and high-voltage components.

The vacuum sub-assembly is built for baseline cleanliness and rapid cycling:

Roughing & Foreline: Oil-free dry scroll pump (capacity: 30 m³/h) eliminates hydrocarbon backstreaming into the main chamber.

High Vacuum: Compound turbo-molecular pump backed by electropneumatic gate valves and pneumatic angle valves.

Pressure Monitoring: Combined Pirani and Bayard-Alpert ion gauges deliver real-time feedback across atmosphere to ultra-high vacuum (10⁻⁹ Torr).

Bakeout Capability: Optional quartz infrared heaters or jacket heaters enable chamber thermal degassing to reach base pressure thresholds faster.

Supported Source Materials
Refractory Metals: Ti, Ta, W, Mo, Cr, Ni, Au, Ag, Al, Cu.

Dielectrics & Oxides: SiO₂, TiO₂, Ta₂O₅, Al₂O₃, HfO₂, Nb₂O₅.

Substrate Compatibility
Semiconductor Wafers: 2-inch to 8-inch silicon, GaAs, sapphire.

Optical Substrates: Fused silica, BK7, Zerodur, germanium, and zinc selenide lenses/prisms.

Flexible Substrates: Polyimide films (via specialized roll-to-roll or carrier plate fixtures).

Laser Optics: Deposition of low-scatter, high-laser-damage-threshold (LIDT) dielectric stacks (TiO₂/SiO₂) for high-power mirrors and beamsplitters.

Semiconductor & Microelectronics: Gate metal deposition, ohmic contact formation, and lift-off metallization processes for discrete devices and sensors.

Optoelectronics: Transparent conductive oxide (TCO) layers and metal cathode evaporation for OLED and photovoltaic cell fabrication.

Every production environment has unique layout and integration constraints. Factory engineering modifications include:

Chamber Geometry: Custom port placements for in-situ diagnostics (e.g., Ellipsometry, SIMS, or RHEED).

Load-Lock Integration: Linear magnetic transfer arms or automatic pneumatic fork transfer to connect with cluster tools or glovebox lines.

Substrate Biasing & Heating: RF/DC bias power supplies for ion-assisted deposition (IAD) and substrate heating up to 800°C.

PLC & HMI Localization: Siemens S7 or Allen-Bradley PLC control architectures meeting specific plant automation protocols.

Leak Testing: Every welded stainless steel chamber is helium mass spectrometer leak-tested to a sensitivity of < 1 × 10⁻⁹ Pa·m³/s prior to assembly.

High-Voltage Insulation Test: E-gun power supplies undergo dielectric withstand testing at 1.5× rated voltage plus 1000V for 60 seconds.

Factory Acceptance Test (FAT): Systems undergo a continuous 72-hour burn-in test, verifying pumping speed curves, e-gun sweep calibration, and film thickness uniformity across test substrates before crating.

Documentation Package: Comprehensive manuals including electrical schematics, P&ID diagrams, PLC source codes, material safety data sheets, and calibration certificates.

On-Site Services: Factory-certified service engineers handle mechanical assembly, utility hookups (cooling water, exhaust, power), and site acceptance testing (SAT).

Remote Diagnostics: Secure VPN router integration allows remote troubleshooting, parameter optimization, and software updates by senior process engineers.