Oxford Instruments PlasmaPro 100 ALE Atomic Layer Etching System
| Brand | Oxford Instruments |
|---|---|
| Origin | United Kingdom |
| Manufacturer Type | Authorized Distributor |
| Origin Category | Imported |
| Model | PlasmaPro 100 ALE |
| Pricing | Available Upon Request |
Overview
The Oxford Instruments PlasmaPro 100 ALE is a benchtop-scale, high-precision atomic layer etching (ALE) system engineered for controlled, self-limiting removal of material at the sub-nanometer level. Unlike conventional plasma etching, ALE operates via sequential, saturated surface reactions—typically alternating between surface modification (e.g., halogenation) and volatile byproduct removal (e.g., ion-assisted desorption)—enabling atomic-scale depth control, exceptional uniformity, and minimal subsurface damage. Designed specifically for advanced semiconductor R&D and pilot-line fabrication, the PlasmaPro 100 ALE integrates reactive ion etching (RIE) and pulsed plasma capabilities within a compact, UHV-compatible chamber architecture. Its modular vacuum system, temperature-controlled electrode, and real-time endpoint detection support reproducible process development across III–V compounds, wide-bandgap semiconductors, and dielectric stacks—making it suitable for next-generation MEMS, photonics, RF devices, and quantum materials processing.
Key Features
- Atomic-layer precision etching with sub-Å depth control per cycle, validated through in situ ellipsometry and ex situ AFM metrology
- Dual-mode operation: configurable for both thermal ALE (T-ALE) and plasma-enhanced ALE (PE-ALE), enabling optimization for low-damage GaN, InP, and AlGaAs processing
- Integrated 13.56 MHz RF generator with independent bias control for ion energy tuning (1–200 eV range), critical for high-aspect-ratio (HAR) nanoscale patterning
- 200 mm wafer compatibility with full-chuck temperature control (−100 °C to +150 °C), supporting cryogenic etching for Si Bosch and ultra-low-damage SiNₓ/SiO₂ processes
- Modular gas delivery system with up to six independently controlled MFCs, compatible with Cl₂, BCl₃, SF₆, CHF₃, O₂, Ar, and specialty precursors (e.g., TiCl₄, WF₆)
- High-reliability vacuum architecture: base pressure <5×10⁻⁷ mbar, turbo-molecular pumping with load-lock option for contamination-sensitive III–V and 2D material workflows
Sample Compatibility & Compliance
The PlasmaPro 100 ALE accommodates bare wafers (Si, SiC, GaAs, InP, GaN, sapphire), packaged devices (via dry etch de-packaging configuration), and diced dies. It supports industry-standard cassette and FOUP handling interfaces (optional). Process recipes are developed and documented in accordance with ISO 9001 quality management principles and align with key semiconductor manufacturing standards including SEMI S2/S8 (safety and ergonomics), ISO/IEC 17025 (test method validation), and ASTM F394 (etch rate uniformity measurement). For regulated environments, optional audit-trail logging and user-access controls comply with FDA 21 CFR Part 11 requirements when integrated with Oxford’s PlasmaLab Suite software.
Software & Data Management
Controlled via Oxford Instruments’ PlasmaLab Suite v5.x—a Windows-based platform supporting recipe-driven automation, real-time parameter logging (pressure, power, gas flows, temperature), and synchronized endpoint signal acquisition (OES, interferometry, or mass spectrometry). All process data—including timestamps, operator ID, chamber conditions, and alarm history—are stored in encrypted SQLite databases with configurable export to CSV or HDF5 formats. Version-controlled recipe libraries, electronic signature support, and role-based access ensure traceability for GLP/GMP-aligned labs. Remote monitoring and diagnostics are enabled via secure TLS-encrypted Ethernet connection, facilitating integration into fab-wide MES systems.
Applications
- Nanopatterning of VCSEL and photonic crystal cavities in GaAs/AlGaAs heterostructures
- High-selectivity, low-damage etching of GaN HEMT gate recesses and ohmic contact layers
- HAR etching of SiO₂ and SiNₓ for MEMS inertial sensors and RF front-end filters
- Atomic-scale trimming of III–V nanowires and quantum dot heterostructures
- Failure analysis via non-destructive dry decapsulation of flip-chip and molded packages
- Deposition-etch cycles for hard mask engineering in LED epitaxy and micro-LED transfer processes
- PECVD of stoichiometric SiNₓ and SiO₂ films for photonic waveguide passivation and anti-reflective coatings
FAQ
What distinguishes PlasmaPro 100 ALE from conventional RIE systems?
It employs self-limiting, cyclic surface reactions rather than continuous plasma bombardment—enabling sub-monolayer removal control, reduced ion-induced lattice damage, and superior sidewall profile fidelity.
Can the system perform both etching and deposition in the same chamber?
Yes—when equipped with the optional PECVD module, it supports alternating ALE and ALD-like cycles for hybrid process integration (e.g., etch-deposit-etch sequences for trench fill or mask regeneration).
Is remote service and software update support available?
Oxford Instruments provides global remote diagnostics, firmware updates, and application engineering support via secure VPN-enabled connections, subject to customer site authorization and network policy compliance.
Does the system meet cleanroom compatibility requirements?
The PlasmaPro 100 ALE meets Class 100 (ISO 5) cleanroom compatibility standards; all internal wetted surfaces are electropolished stainless steel or anodized aluminum, with particle generation tested per SEMI F22.
