Product Overview
Zinc Oxide with Gallium Oxide Sputtering Target (ZnO/Ga2O3) is a ceramic sputtering target used to deposit composition-specific oxide thin films. Compared with metallic targets, oxide targets are typically more sensitive to density, porosity, brittleness, thermal shock, and bonding design. In practice, target microstructure, thickness, cooling conditions, and the chosen sputtering mode can all affect arc stability, particle generation, and deposited-film performance.
Material and Deposition Characteristics
RF magnetron sputtering is commonly considered for insulating or semiconducting oxide targets, while sufficiently conductive formulations may allow alternative power modes in some systems. Target density and microstructural uniformity matter because pores, cracks, and local inhomogeneities can contribute to unstable plasma, particles, or target damage. For brittle ceramics, bonded assemblies and gradual power ramping are often worth evaluating.
Technical Data
| Parameter | Typical Value / Range | Importance |
|---|---|---|
| Material | Zinc Oxide doped with Gallium Oxide (GZO) | Transparent conductive oxide |
| Ga₂O₃ Doping Level | 1 – 5 wt.% (customizable) | Controls conductivity & transparency |
| Purity | 99.9% – 99.99% (total) | Affects electrical & optical performance |
| Target Form | Disc / Plate (bonded or unbonded) | Compatible with sputtering systems |
| Diameter | 25 – 300 mm (custom) | Fits standard magnetron cathodes |
| Thickness | 3 – 6 mm (typical) | Influences target lifetime |
| Sputtering Method | RF magnetron sputtering | Ideal for oxide ceramics |
| Backing Plate | Copper (optional) | Enhances heat transfer & stability |
| Material | Key Advantage | Typical Application |
|---|---|---|
| Zinc Oxide doped with Gallium Oxide (GZO) | ITO alternative, stable conductivity | Displays & photovoltaics |
| Indium Tin Oxide (ITO) | Very low resistivity | High-end optoelectronics |
| Aluminum-Doped ZnO (AZO) | Cost-effective | Large-area coatings |
| Question | Answer |
|---|---|
| Can the gallium oxide content be adjusted? | Yes, Ga₂O₃ concentration can be customized to meet performance requirements. |
| Is RF sputtering required? | RF magnetron sputtering is typically recommended for GZO targets. |
| Are bonded targets available? | Yes, copper-backed targets are available for higher power operation. |
| Can large-diameter targets be supplied? | Yes, targets up to 300 mm or larger can be produced on request. |
| Is a Certificate of Analysis available? | Yes, CoA is available upon request. |
Typical Thin-Film Applications
- Dielectric, insulating, optical, magnetic, protective, or functional ceramic thin films
- Semiconductor, sensor, photonic, and multilayer coating research
- Applications where oxide composition, density, and process stability affect film performance
Target Configuration and Ordering Considerations
When requesting a quotation, provide target diameter or rectangular dimensions, thickness, purity or composition, required quantity, and whether a backing plate or bonded assembly is needed. For brittle ceramic or compound targets, it is useful to specify the cathode model, backing-plate material, preferred bonding method, operating power if known, and any density, tolerance, or inspection-document requirements. TFM can review drawings, old-target photos, and application details when custom dimensions are required.
Frequently Asked Questions
Is Zinc Oxide with Gallium Oxide better suited to RF or DC sputtering?
RF magnetron sputtering is commonly considered for insulating or semiconducting oxide targets. If a specific formulation is sufficiently conductive, other modes may also be possible, but the equipment and target properties should be confirmed.
Why is density important for a Zinc Oxide with Gallium Oxide target?
Density and microstructural uniformity affect erosion stability, thermal behavior, and particle risk. Pores, cracks, or local density variations can contribute to unstable sputtering and target damage.
Should a Zinc Oxide with Gallium Oxide target be bonded to a backing plate?
Bonding is often useful for brittle oxide targets because it can improve mechanical support and heat transfer. The backing material and bonding method should be chosen according to target size, thickness, and operating conditions.
Will the deposited film always have the same composition as ZnO/Ga2O3?
Not always. Film composition can be affected by preferential sputtering, reactive gas, substrate temperature, re-sputtering, and chamber conditions. Composition-sensitive films should be verified after deposition.
How should power be ramped on a brittle Zinc Oxide with Gallium Oxide target?
A conservative power ramp and stable cooling are generally advisable. The exact operating procedure should follow the target size, bonding condition, cathode design, and supplier recommendations rather than a universal wattage.
What information should I provide when ordering Zinc Oxide with Gallium Oxide?
Provide formula or composition, purity, dimensions, quantity, backing and bonding requirements, cathode model or drawing, and any density, tolerance, or inspection requirements.
Reviews
There are no reviews yet.