Product Overview
Selenium Sputtering Target (Se) is an elemental sputtering target used as a direct film source or as a component in composition-sensitive compound-film development. Because many semimetallic or nonmetallic elements are used in optical, electronic, or chalcogenide-related systems, target purity and contamination control can be especially important when the sputtered layer forms part of a functional multilayer stack.
Material and Deposition Characteristics
The preferred power mode depends on the target’s electrical resistivity and the deposition system. Some elemental targets in this family can be processed with DC or pulsed-DC sputtering, while others may require RF sputtering or more conservative operating conditions. When the deposited film acts as a precursor layer for a compound or multilayer system, film analysis is recommended to verify the final composition and structure.
Technical Data
| Parameter | Typical Value / Range | Importance |
|---|---|---|
| Purity | 99.9% ā 99.999% | High purity ensures stable electronic and optical film properties |
| Chemical Symbol | Se | Determines elemental composition of thin films |
| Diameter | 25 ā 300 mm (custom) | Compatible with standard sputtering systems |
| Thickness | 3 ā 6 mm | Influences sputtering stability and target lifetime |
| Density | ā„ 95% theoretical density | Ensures uniform sputtering and film growth |
| Bonding | Copper backing plate / Indium bonded | Improves thermal stability during deposition |
| Material | Key Advantage | Typical Application |
|---|---|---|
| Selenium (Se) | Strong photoelectric response and semiconductor properties | Solar cells and photodetectors |
| Tellurium (Te) | Excellent thermoelectric and semiconductor properties | Thermoelectric materials and detectors |
| Sulfur (S) | Important chalcogen element for compound semiconductors | Semiconductor synthesis and coatings |
| Question | Answer |
|---|---|
| What sputtering methods are suitable for selenium targets? | Selenium sputtering targets can be used in RF or DC magnetron sputtering systems depending on system configuration. |
| Can selenium targets be customized? | Yes. Diameter, thickness, and bonding options can be customized to match different sputtering systems. |
| Are bonded sputtering targets available? | Yes. Selenium targets can be bonded to copper backing plates using indium bonding for improved thermal management. |
| What purity levels are typically available? | Standard purities range from 99.9% up to 99.999% depending on application requirements. |
| What substrates can selenium films be deposited on? | Selenium films can be deposited on glass, silicon wafers, metal substrates, and other semiconductor materials. |
Typical Thin-Film Applications
- Selenium-based thin films and precursor layers for semiconductor, optical, and functional coating research
- Chalcogenide, thermoelectric, infrared, electronic, or phase-change material development where applicable
- Projects requiring a specific elemental source for co-sputtering or subsequent compound formation
Target Configuration and Ordering Considerations
For quotation and manufacturability review, provide target size, thickness, purity or alloy composition, quantity, and the sputtering gun or cathode model if known. If a bonded assembly is required, include backing-plate material, bonding preference, and any dimensional tolerances, surface-finish needs, or inspection-document requirements. TFM can also review customer drawings or old-target samples for replacement builds.
Frequently Asked Questions
What is a Selenium sputtering target typically used for?
It is used either to deposit the elemental film directly or to serve as a source component in compound, optical, electronic, chalcogenide, or other functional thin-film systems.
Should Selenium be sputtered with DC or RF power?
The best power mode depends on target resistivity, dimensions, and sputtering-system capability. Some elemental targets in this family can work with DC or pulsed-DC power, while others are more commonly evaluated with RF power.
Why is purity important for a Selenium target?
Many of these materials are used in composition-sensitive thin films, so metallic or chemical impurities can affect the behavior of the final film or multilayer stack. The target purity should therefore be matched to the application.
Can a Selenium target be supplied in a bonded assembly?
Yes, if the cathode design or thermal considerations make a backing plate desirable. The specific backing material and bonding method should be reviewed against target size and operating conditions.
Does target composition guarantee film composition for Selenium?
Not always. Film composition can shift because of sputtering conditions, substrate temperature, chamber history, and re-sputtering effects. Film analysis is recommended when the final composition is critical.
What should be included in an RFQ for Selenium?
Provide purity, dimensions, quantity, target configuration, backing requirement if any, cathode model or drawing, and any special packaging or inspection-document requirements.
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