Verity EPD Spectrometer
| Brand | Verity |
|---|---|
| Origin | USA |
| Manufacturer Type | Authorized Distributor |
| Origin Category | Imported |
| Model | Verity EPD Spectrometer |
| Pricing | Upon Request |
Overview
The Verity EPD Spectrometer is a high-performance, process-integrated optical emission spectrometer engineered for real-time plasma endpoint detection and diagnostic monitoring in semiconductor manufacturing environments. Operating on the principle of optical emission spectroscopy (OES), it captures and analyzes spectral signatures emitted from reactive plasmas during etch, deposition, and cleaning processes. By resolving intensity variations across the 200–800 nm wavelength range with a research-grade CCD detector, the system enables quantitative identification of atomic and molecular species—such as Cl, F, Si, Ar, O, and CFx radicals—providing direct insight into plasma chemistry evolution and process stability. Designed specifically for integration into vacuum-based fabrication tools—including RIE, ICP, PECVD, and CCP systems—the EPD Spectrometer delivers sub-second spectral acquisition and deterministic endpoint determination critical for high-yield GaAs, SiC, and advanced display fabrication.
Key Features
- Real-time plasma endpoint detection with configurable threshold logic and multi-wavelength ratio algorithms
- High-sensitivity, thermoelectrically cooled CCD detector optimized for UV–VIS spectral response (200–800 nm)
- Compact, modular form factor (19″ rack-mount or benchtop) compatible with Class 1 cleanroom environments
- RoHS-compliant construction and vacuum-compatible optical interface (CF-35 or KF-40 flange options)
- Embedded firmware supporting both standalone operation and synchronized control via external PLC or host tool controller
- Low-noise analog front-end and 16-bit digitization for high dynamic range (>5000:1) and signal reproducibility
- USB 2.0 and 10/100BASE-T Ethernet interfaces for flexible system integration and remote diagnostics
Sample Compatibility & Compliance
The Verity EPD Spectrometer is validated for use with standard semiconductor process chemistries including Cl2, BCl3, SF6, CF4, CHF3, O2, and Ar-based plasmas. It supports endpoint detection in GaAs, Si, SiO2, SiNx, and ITO etching; plasma-enhanced CVD of SiNx and SiO2; photoresist ashing; and CMP slurry characterization. The instrument conforms to CE marking requirements, meets IEC 61000-6-2/6-4 immunity and emissions standards, and is designed to support GLP/GMP-aligned process documentation workflows. While not certified to FDA 21 CFR Part 11 out-of-the-box, its SpectraView software architecture permits audit-trail configuration and electronic signature implementation per customer validation protocols.
Software & Data Management
SpectraView is the native application software for spectral acquisition, visualization, and endpoint analysis. It runs on Windows OS (Windows 10/11 x64) and supports both local execution on a dedicated application computer and distributed deployment via Verity’s MTC1000 multi-task controller. SpectraView provides real-time spectral overlay, time-resolved intensity tracking, user-defined spectral band integration (e.g., Cl 257.9 nm / Ar 750.4 nm ratio), and automated endpoint flagging with timestamped event logging. Data export formats include CSV, HDF5, and XML, enabling seamless import into MES platforms (e.g., Camstar, FactoryTalk) and statistical process control (SPC) tools. The software includes recipe management, user role-based access control, and optional OPC UA server support for factory-wide data federation.
Applications
- Endpoint detection in GaAs, InP, and GaN dry etch processes for RF and optoelectronic device fabrication
- Plasma uniformity mapping and chamber conditioning monitoring in large-area display (LCD/OLED) production
- Real-time feedback control for MEMS deep silicon etching (Bosch process) and release etch optimization
- In-situ monitoring of precursor decomposition and film stoichiometry during PECVD of low-k dielectrics
- Photoresist strip endpoint verification using CO and H2O emission bands in O2/H2 plasmas
- Plasma source health diagnostics via noble gas line intensity drift and impurity peak detection
FAQ
What spectral resolution does the Verity EPD Spectrometer achieve?
Spectral resolution is dependent on grating selection and slit width configuration; typical full-width at half-maximum (FWHM) values range from 0.2 nm to 1.5 nm across the 200–800 nm range.
Can the EPD Spectrometer operate without an external PC?
No—it requires either a dedicated application computer or the Verity MTC1000 controller to execute SpectraView and manage spectral acquisition, analysis, and communication with the host tool.
Is fiber optic coupling supported?
Yes—standard configurations include SMA-905 or FC/PC vacuum feedthrough-compatible fiber interfaces for flexible optical path routing.
Does the system support integration with SECS/GEM or GEM300 standards?
SpectraView provides configurable TCP/IP command interface and can be adapted to SECS/GEM via custom driver development or third-party middleware such as Cimetrix CIMConnect.
What maintenance is required for long-term calibration stability?
Annual wavelength calibration using Hg/Ar lamp reference and periodic dark-current characterization are recommended; no consumables or routine optical alignment are required under normal operating conditions.
