99.999% AZO Sputtering Target Aluminum-Doped Zinc Oxide (ZnO : Al₂O₃ = 98 : 2 wt%)

Description

Aluminum-Doped Zinc Oxide (AZO) Sputtering Target is a conductive oxide ceramic target consisting primarily of zinc oxide (ZnO) doped with aluminum oxide (Al₂O₃). One of the most commonly used compositions is ZnO:Al₂O₃ = 98:2 wt%, which provides a useful combination of electrical conductivity, optical transparency, chemical stability, and material availability.

AZO is widely used as a Transparent Conductive Oxide (TCO) material. Compared with undoped ZnO, aluminum doping increases the carrier concentration and can significantly improve the electrical conductivity of deposited ZnO-based films while maintaining high transparency in the visible region under optimized deposition conditions.

As an indium-free TCO material, AZO is also an important alternative to Indium Tin Oxide (ITO) for applications where material cost, resource availability, and large-area deposition are important considerations.

Tinsan Materials supplies 99.999% (5N) AZO sputtering targets manufactured using carefully selected high-purity raw materials and controlled ceramic processing techniques. Our targets are designed to provide high density, uniform composition, consistent microstructure, stable sputtering behavior, and reproducible thin-film deposition.

Standard and customized target dimensions, backing plates, and bonding services are available for laboratory, pilot-scale, and industrial sputtering systems.

Key Features

• High purity: 99.999% (5N)
• Standard composition: ZnO:Al₂O₃ = 98:2 wt%
• High-density ceramic target
• Controlled Al₂O₃ doping concentration
• Uniform composition and microstructure
• Good electrical conductivity
• Excellent optical transparency of properly deposited AZO films
• Stable sputtering performance
• Low particle generation under optimized operating conditions
• Indium-free TCO material
• Suitable for transparent conductive thin-film deposition
• Standard and custom dimensions available
• Backing plate bonding available
• Suitable for research and industrial applications

Why Use AZO for Transparent Conductive Films?

AZO is widely studied and commercially used as an indium-free transparent conductive oxide because it combines several desirable material characteristics.

• Good Electrical Conductivity: Aluminum doping introduces additional charge carriers into the ZnO system, enabling properly deposited AZO films to achieve significantly improved conductivity compared with undoped ZnO.
• High Optical Transparency: Optimized AZO thin films can provide high transparency in the visible spectral region, making them suitable for transparent electrode and optoelectronic applications.
• Indium-Free Composition: Unlike ITO, AZO does not require indium. Zinc and aluminum are relatively abundant elements, making AZO attractive for applications requiring large-area transparent conductive coatings.
• Cost-Effective TCO Material: The availability of zinc and aluminum can make AZO an economically attractive TCO material, particularly for large-area deposition and high-volume applications.
• Good Chemical & Thermal Stability: ZnO-based materials provide useful chemical and thermal stability for many thin-film device structures and coating applications.

Applications

• Transparent Conductive Oxide (TCO) Films: AZO is widely used to deposit transparent conductive films combining visible-light transparency with electrical conductivity.
• Solar Cells & Photovoltaics: AZO films can serve as transparent conductive layers in various photovoltaic device structures, including thin-film and emerging solar cell technologies.
• Flat Panel Displays: Transparent conductive AZO films are applicable to display technologies where transparent electrode layers are required.
• Touch Panels: AZO is investigated and used as an indium-free transparent electrode material for touch and interactive display technologies.
• Thin-Film Transistors (TFTs): ZnO-based materials are important in thin-film electronics, and AZO can be used in conductive or functional layers in related device structures.
• Optoelectronic Devices: AZO films are suitable for various optoelectronic structures requiring a combination of optical transparency and electrical conductivity.
• Low-E & Functional Glass: Large-area AZO coatings can be used in functional glass and energy-related coating systems.
• Sensors: ZnO-based thin films are widely investigated for gas sensing, optical sensing, and other functional sensor technologies.
• Research & Development: High-purity AZO sputtering targets are suitable for universities, research institutes, laboratories, and industrial R&D facilities developing transparent electronics and advanced oxide thin films.

Frequently Asked Questions

Q: What is an AZO sputtering target?

A: An AZO sputtering target is an Aluminum-Doped Zinc Oxide ceramic target used as a source material for depositing transparent conductive oxide thin films by PVD sputtering.

Q: What does ZnO:Al₂O₃ = 98:2 wt% mean?

A: It means the target formulation contains 98 wt% ZnO and 2 wt% Al₂O₃. This is one of the most commonly used AZO compositions for transparent conductive thin-film applications.

Q: What is the purity of your AZO sputtering target?

A: Our high-purity AZO target is available at 99.999% (5N) under the applicable purity specification.

Q: Is 99.999% purity the same as 99.999% ZnO content?

A: No. The composition and purity describe different characteristics. The target composition is 98 wt% ZnO + 2 wt% Al₂O₃, while 99.999% refers to the specified purity grade / impurity control of the AZO target material.

Q: What are AZO thin films used for?

A: AZO films are widely used or investigated for transparent conductive electrodes, solar cells, displays, touch panels, optoelectronic devices, thin-film electronics, sensors, and functional glass coatings.

Q: Why is Al₂O₃ added to ZnO?

A: Aluminum doping increases the carrier concentration in ZnO and can improve electrical conductivity while maintaining good optical transparency when the film is deposited under optimized conditions.

Q: Is AZO an alternative to ITO?

A: Yes. AZO is an important indium-free TCO material and can be a cost-effective alternative to ITO in many applications. However, the best material depends on the electrical, optical, thermal, and processing requirements of the specific device.

Q: Can AZO targets be used for DC magnetron sputtering?

A: Yes. High-density, sufficiently conductive AZO targets can be used for DC magnetron sputtering. RF and pulsed DC sputtering are also commonly used depending on the equipment and process requirements.

Q: What color is an AZO sputtering target?

A: AZO ceramic sputtering targets commonly appear gray to dark gray. The exact color can vary depending on sintering conditions, oxygen vacancies, density, microstructure, and surface finish.

Q: Can you manufacture custom AZO targets?

A: Yes. Target diameter, thickness, shape, composition, dimensional tolerances, surface finish, and backing plate configuration can be customized according to customer requirements.

Q: Can you provide bonded AZO sputtering targets?

A: Yes. AZO targets can be supplied with suitable backing plates and bonding configurations according to target dimensions and sputtering system requirements.

Ordering & Technical Support

Tinsan Materials provides flexible minimum order quantities, competitive pricing, and worldwide delivery. For custom specifications or technical inquiries, please feel free to contact us for a detailed consultation or email us at info@nbsvip.com.