Novascan PSDP-UVT Series Heated UV-Ozone Cleaner

Overview

The Novascan PSDP-UVT Series Heated UV-Ozone Cleaner is an engineered solution for high-efficiency surface decontamination and organic residue removal in research, microfabrication, and analytical laboratories. It operates on the well-established principle of ultraviolet photochemical oxidation: short-wavelength UV-C radiation (185 nm) dissociates molecular oxygen (O₂) in ambient air or supplemental O₂ to generate atomic oxygen (O), which rapidly combines with O₂ to form ozone (O₃). Simultaneously, 254 nm UV photons directly cleave C–C, C–H, and C–O bonds in hydrocarbons and other organic contaminants. The integrated heated sample stage (PID-controlled, up to 150 °C standard, 200 °C optional) thermally accelerates oxidative reaction kinetics, enabling complete mineralization of recalcitrant organics—including photoresist residues, lubricants, adhesives, and biological films—into CO₂, H₂O, and volatile oxides. Unlike plasma-based systems, this method requires no vacuum infrastructure, operates at atmospheric pressure, and leaves no conductive or particulate residue.

Key Features

• Programmable digital controller with real-time display of elapsed time, set temperature, and lamp status
• PID-regulated heating stage with ±1 °C thermal stability across full range (150 °C standard; 200 °C available as factory option)
• High-output low-pressure mercury grid lamp emitting dual-band UV (185 nm for ozone generation; 254 nm for direct photolysis)
• UV-reflective aluminum housing extending 2.54 cm beyond lamp dimensions to maximize irradiance uniformity
• Vertically adjustable sample stage (height lockable) for precise source-to-sample distance optimization (critical for dose control per ISO 14644-1 cleanroom surface conditioning protocols)
• Dual standardized gas ports (¼” NPT) supporting ambient-air operation or controlled O₂ enrichment to boost ozone concentration up to 3× baseline
• Interlocked safety system: UV emission ceases instantly upon chamber lid opening, complying with IEC 60825-1 Class 3B laser safety logic architecture
• Integrated catalytic ozone neutralizer and exhaust pump enable benchtop use without fume hood integration—validated per ANSI Z9.5 laboratory ventilation guidelines
• Top-access configuration supports rapid loading/unloading of wafers (up to 200 mm), TEM grids, optical components, MEMS devices, and irregularly shaped substrates

Sample Compatibility & Compliance

The PSDP-UVT accommodates substrates ranging from silicon wafers and fused silica optics to polymer films, metal foils, and ceramic sensors. Its non-contact, dry-process methodology preserves delicate surface topographies and avoids solvent-induced swelling or leaching. All models meet CE marking requirements for electromagnetic compatibility (EN 61326-1) and low-voltage safety (EN 61010-1). Optional firmware enables 21 CFR Part 11-compliant electronic records, including timestamped parameter logs, user authentication, and immutable audit trails—essential for GLP/GMP-regulated QC environments. Lamp spectral output is traceable to NIST-calibrated radiometers, and ozone generation efficiency conforms to ASTM D5157-22 (Standard Guide for Ozone Generation Testing).

Software & Data Management

The embedded controller stores up to 20 user-defined cleaning protocols, each configurable with independent time, temperature, gas mode (air/O₂), and ramp/soak profiles. An optional USB data logger exports CSV-formatted session records (start/end timestamps, actual vs. setpoint temperature, cumulative UV exposure minutes) for LIMS integration. Remote monitoring via RS-232 or Ethernet (with add-on module) supports centralized lab equipment management platforms. Firmware updates are performed via secure signed binaries, ensuring integrity during field upgrades.

Applications

• Pre-bonding surface activation of silicon, glass, and PDMS for microfluidic device assembly
• Removal of organic contamination from AFM cantilevers, SEM stubs, and XRD sample holders
• Trace hydrocarbon elimination from ultra-high vacuum (UHV) chamber components prior to bake-out
• Decontamination of reusable biosensor surfaces between assay cycles (validated per ISO 15197:2013 Annex D)
• Photomask cleaning in semiconductor R&D labs without risk of chrome layer oxidation
• Surface preparation of perovskite solar cell substrates to improve interfacial charge transfer
• Restoration of anti-reflective coatings on telescope optics by eliminating sub-monolayer carbonaceous films

FAQ

What is the maximum recommended operating temperature for the heated stage?
The standard PSDP-UVT model is rated for continuous operation up to 150 °C. A 200 °C high-temp option is available with upgraded thermal insulation and platinum RTD sensing.
Can the system operate without external gas supply?
Yes—ambient air is sufficient for most applications. Supplemental O₂ increases ozone yield and reduces treatment time for heavily contaminated samples.
How often must the UV lamp be replaced?
Lamp lifetime is rated at ≥5,000 hours under normal duty cycles. Output decay is monitored via integrated photodiode feedback; replacement is recommended when irradiance drops below 85% of initial specification.
Is ozone exposure hazardous during routine operation?
No—integrated catalytic neutralization and forced-air exhaust maintain ambient ozone concentrations below 0.05 ppm (OSHA PEL), verified by third-party industrial hygiene testing.
Does the system support validation documentation for regulated labs?
Yes—IQ/OQ documentation packages, calibration certificates (NIST-traceable radiometer), and 21 CFR Part 11 readiness kits are available upon request.