Overview
High-purity selenium targets are specialized materials used primarily in physical vapor deposition (PVD) processes such as sputtering and evaporation. These targets consist of selenium refined to purity levels typically exceeding 99.99%, with controlled microstructure to ensure consistent deposition performance. The manufacturing process involves zone refining or vacuum distillation to achieve ultra-high purity, followed by hot pressing or other consolidation methods to form dense targets. Industrial buyers should note that target performance depends on both chemical purity and physical characteristics like grain size and density.
Physical and Chemical Properties
Selenium targets exhibit unique photoelectric properties due to selenium's semiconductor characteristics. The material has a bandgap of about 1.74 eV, making it particularly useful in optoelectronic applications. High-purity grades minimize undesirable impurities that could affect thin-film performance. Thermal properties are critical for deposition processes. Selenium has a relatively low melting point (221°C) compared to other target materials, requiring careful temperature control during sputtering. The targets typically show good thermal stability when properly bonded to cooling plates.
Main Applications
The primary use of selenium targets is in manufacturing thin-film photovoltaic cells, particularly copper indium gallium selenide (CIGS) solar panels. The targets enable precise deposition of selenium layers that form the active photovoltaic material. Additional applications include semiconductor device fabrication, where selenium thin films serve as photoconductive layers, and xerographic processes. Emerging uses include thermoelectric materials and phase-change memory devices, where selenium's unique properties enable new technological developments.
Safety and Storage
Selenium targets require careful handling due to the element's toxicity. Inhalation of selenium dust or fumes can cause respiratory irritation, while ingestion may lead to selenium poisoning. Proper personal protective equipment (PPE) including gloves and respirators should be used when machining or handling targets. Storage should be in sealed containers under inert gas when possible, as selenium can oxidize over time when exposed to air. Targets should be kept in dry conditions at room temperature, away from direct sunlight and incompatible materials such as strong oxidizers.
B2B Procurement Guide
When procuring high-purity selenium targets, buyers should specify purity requirements (typically 4N or 5N), target dimensions, thickness, and bonding requirements. Backing plate material (usually copper or molybdenum) and bonding method (soldered or clamped) significantly affect thermal performance. Lead times can vary from 4-12 weeks depending on customization requirements. Quality certifications such as ISO 9001 and material test reports (MTRs) should be requested. For large-volume purchases, consider supplier capacity for consistent quality across multiple batches.
Related Manufacturers
- 主营：圆钢棒、圆锻件、钢板材、锂靶材、钽靶材、合金靶材、光棒车、研磨棒、复合板、挡渣板、钢棒材、圆棒材、圆棒料、无缝管、精密管、螺丝钉、合金板、时效钢、合金棒料、不锈钢板、膨胀合金、电热合金、六角螺母、热轧钢板、六角螺栓
- 主营：合金靶材、陶瓷靶材、金属靶材、高纯合金靶材、铜靶材、银靶材、铝靶材、锂靶材、高纯银靶材、镍铜合金靶材、铬靶材、锆靶材、氧化铟镓锌靶材、铱靶材、铂靶材、硫酸钠靶材、二氧化硅靶材、氧化镁靶材、钛铌合金靶材、钼钽合金靶材、碲化锑靶材、单质金属靶、溅射靶
- 主营：靶材、中金研
- 主营：高熵合金、金颗粒、铂颗粒、高纯银颗粒、高纯铜颗粒、高纯铁颗粒、高纯钛颗粒、高纯钴颗粒、高纯铝颗粒、高纯镍颗粒、铜靶、铝靶、钛靶、铬靶、铜合金、铝合金、铁合金(钢)、镍合金、钛合金、纽扣锭
- 主营：金属靶材、合金靶材、陶瓷靶材、蒸发颗粒
- 主营：镀膜材料、蒸发颗粒、三氧化钨、高纯铟丝、高纯铝靶材、高纯钒靶材、高纯钛颗粒、高纯铌靶材、高纯硅靶材、高纯铬颗粒、高纯钽靶材、高纯锗靶材、高纯铪靶材、高纯铬靶材、高纯锰靶材、高纯铜颗粒、高纯硫化锌、高纯钨靶材、高纯锆靶材、氧化镨粉末、氧化铒粉末、三氧化二铁、三氧化二铟、氟化钙晶体
- 主营：镀膜材料、磁控溅射、稀土金属、陶瓷靶材、实验靶材、溅射靶材、合金靶材、靶材定制、高纯材料、稀土材料、半导体材料
- 主营：硼化锆、氟化镁、硒化锌、fto靶材、钐靶材、硒靶材、铝靶材、钆靶材、铽靶材、钇靶材、钼靶材、铬靶材、镉靶材、钽靶材、镍靶材、钨靶材、铑靶材、铒靶材、铪靶材、锑靶材、氟化镱、砷化镓、硒化锑、碲化镉、碲粉末
- 主营：颗粒、粉末、溅射镀膜材料、靶材、光学材料
- 主营：锑靶材、铪靶材、铒靶材、镧靶材、铑靶材、钨靶材、镍靶材、钽靶材、镉靶材、铬靶材、钼靶材、钇靶材、铽靶材、钆靶材、铝靶材、硒靶材、硼靶材、钐靶材、ATO靶材、硒化锑、氟化镱、氟化镁
- 主营：镀膜材料、三氧化钨、氧化镨粉末、高纯铟丝、高纯铝靶材、高纯钒靶材、高纯钛颗粒、高纯硅靶材、高纯钽靶材、高纯锗靶材、高纯铪靶材、高纯铬靶材、高纯锰靶材、高纯铜颗粒、高纯硫化锌、高纯钨靶材、高纯锆靶材、高纯镍颗粒、氧化铒粉末、三氧化二铁、三氧化二铟、氟化钙晶体
- 主营：五氧化二铌矩形靶、5N锰颗粒、钛酸锶衬底、铝钪合金靶材、高纯银颗粒、高纯铪颗粒、氧化锌铝靶材、高纯钛片、ITO靶材、石墨粉末、导电氮化硼坩埚、球形粉末、球形铜粉、镀金硅片、钕颗粒、晶振片、键合金丝
- 主营：高纯金属、MBE、合金材料、镀膜材料
- 主营：铝靶材、铜靶材、铬靶材、二氧化硅靶材、氧化镍靶材、氧化镁靶材、氧化镓靶材、氧化铟靶材、氧化锌靶材、硅靶材、钛靶材、铁靶材、二氧化钛靶材、四氧化三铁靶材、三氧化二铁靶材、锌靶材、锆靶材、钼靶材、氮化铝靶材、氮化硅靶材、硫化锌靶材、二氧化锆靶材、锑化铟靶材、PTFE靶材
- 主营：高纯光学镀膜用靶材、光学镀膜材料、金属材料