Order II–VI Materials Online
Browse available II–VI wafers and optical substrates in our store. Choose your diameter, polish, coating, and quantity — then order online in minutes.
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Popular Use Cases
- ZnSe — CO2 (10.6 µm) optics, thermal imaging windows
- ZnS — Multi-spectral VIS–IR optics, rugged windows
- ZnTe — Nonlinear / THz generation, EO devices
- CdSe — Photodetectors, PV, quantum dot research
- CdS — Window/buffer layers, acousto-optics
Spec Tips for Quotes
- Diameter (or window size) and thickness
- Polish (SSP/DSP) and roughness target
- Coating type and wavelength band (e.g., 3–5 µm, 8–12 µm)
- Edge specs (bevel, chamfer) and quantity
- Any bow/warp/flatness tolerances
Handling & Safety
- Handle with gloves; avoid abrasion on polished faces
- Store dry in protective cases; clean with approved solvents only
- Follow EHS procedures for cadmium-containing materials (CdS, CdSe)
II–VI Materials Overview
II–VI semiconductors such as ZnSe, ZnS, ZnTe, CdSe, and CdS offer wide bandgaps, excellent infrared/visible transparency, and tunable electronic/optical properties for IR optics, lasers, detectors, acousto-optics, and thin-film device research. UniversityWafer supplies wafers, windows, and diced pieces in research and production quantities with fast turnaround.
Materials We Provide
- Zinc Selenide (ZnSe) — IR-transparent, common for CO2 (10.6 µm) optics and thermal imaging windows.
- Zinc Sulfide (ZnS) — Broad transmission (VIS–IR); available multi-spectral grades for rugged optics.
- Zinc Telluride (ZnTe) — Nonlinear/THz generation, electro-optic and mid-IR applications.
- Cadmium Selenide (CdSe) — Direct bandgap; detectors, photovoltaics, quantum dot research.
- Cadmium Sulfide (CdS) — Window/buffer layers, photodetectors, acousto-optics.
Optical & Electronic Highlights
- Transmission: VIS to LWIR depending on composition and grade (e.g., ZnSe in MW/LWIR).
- Bandgaps: Wide/direct bandgaps enable high damage threshold and efficient emission/absorption control.
- Refractive Index: High n for compact optics; AR/HR coatings available on request.
- Nonlinear & EO: ZnTe, CdS/CdSe support electro-optic/nonlinear effects and THz sources.
Common Formats & Specs
- Forms: Wafers, optical windows, substrates, and diced pieces.
- Diameters: 1–3″ typical (custom on request); thickness to spec.
- Finish: Optical polish (SSP/DSP), epi-friendly surfaces, flats/notch per order.
- Grades: Research, optical, multi-spectral, and device-grade options.
- Tolerances: Bow/warp/roughness controlled to application needs.
Applications
- IR imaging windows, CO2 laser optics, thermal cameras.
- Electro-optic and nonlinear devices, THz generation/detection.
- Photodetectors, photovoltaics, and quantum dot structures.
- Acousto-optic modulators/deflectors, beam combiners, and filters.
Surface Preparation & Coatings
- Optical polish for low scatter and high transmission.
- Epi-ready options for thin-film growth and device stacks.
- Coatings (AR/HR/durability) available for VIS–MWIR–LWIR bands.
Handling & Safety
Handle with gloves in clean environments to prevent surface damage. Cadmium-containing materials (CdS, CdSe) require appropriate EHS precautions and compliant waste disposal. Store in dry cases; avoid abrasion on polished faces.
Ordering Checklist
- Material (ZnSe, ZnS, ZnTe, CdSe, CdS) and grade (optical/research/device).
- Form factor (wafer/window/piece), diameter and thickness.
- Surface finish (SSP/DSP), roughness target, flats/notch.
- Coating requirements (AR/HR/band), transmission band of interest.
- Quantity, packaging, and any special tolerances (bow/warp).
Get a Fast Quote
Send your spec or order online. We can recommend a material/grade and coating stack based on wavelength, damage threshold, and device needs.