Overview
High-purity copper oxide ceramic targets are critical materials in advanced manufacturing processes, particularly in the production of thin films for semiconductors, photovoltaic cells, and optical devices. These targets are fabricated through precise sintering techniques to ensure high density and minimal porosity, which are essential for consistent sputtering performance. The targets are typically available in various shapes and sizes, customized to fit specific deposition systems. Copper oxide (CuO) is chosen for its favorable electronic and optical properties, including its bandgap and absorption characteristics. The high-purity form ensures minimal contamination during deposition, which is crucial for applications requiring precise stoichiometry and film uniformity.
Physical and Chemical Properties
High-purity copper oxide ceramic targets exhibit a monoclinic crystal structure, contributing to their stability under high-temperature conditions. Their density typically ranges between 6.3-6.5 g/cm³, which is close to the theoretical density of CuO, indicating low porosity. This high density is achieved through advanced sintering processes, ensuring optimal performance in sputtering applications. The material is chemically stable under normal conditions but can react with reducing agents or strong acids. Its insolubility in water makes it suitable for use in environments where moisture exposure is a concern. Thermal stability up to 1,326°C allows it to withstand the high-energy conditions of sputtering processes without decomposition.
Main Applications
These targets are primarily used in magnetron sputtering and pulsed laser deposition (PLD) systems to produce thin films for semiconductor devices, such as transistors and memory components. The uniformity and purity of the deposited CuO films are critical for device performance, making high-purity targets indispensable. In the optical industry, CuO films are employed for anti-reflective coatings and solar absorbers due to their favorable light absorption properties. Additionally, they are used in research and development for exploring novel electronic and catalytic materials, where precise control over film composition is required.
Safety and Storage
While copper oxide is not highly toxic, handling the ceramic targets requires precautions to avoid inhalation of dust particles, which can irritate the respiratory system. Proper personal protective equipment (PPE), such as gloves and masks, should be used during machining or installation. Storage conditions should prioritize dryness and minimal exposure to acidic environments, as CuO can react with acids. Targets should be kept in sealed containers with desiccants to prevent moisture absorption, which could affect their performance in sputtering applications.
B2B Procurement Guide
When procuring high-purity copper oxide ceramic targets, buyers should prioritize suppliers with certifications such as ISO 9001, ensuring quality control in manufacturing. Key specifications to verify include purity (≥99.9%), density (≥95% of theoretical density), and grain size uniformity. Requesting a certificate of analysis (CoA) for each batch is recommended to confirm compliance with technical requirements. Lead times can vary depending on customization needs, so early engagement with suppliers is advisable for large or specialized orders. Pricing is influenced by purity, size, and order volume, with bulk purchases often qualifying for discounts.
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