High purity Fused Quartz Window

Semixlab fused quartz windows are engineered to meet the stringent requirements of advanced semiconductor manufacturing, providing both process stability and equipment protection.

Role in Semiconductor Silicon Wafer Manufacturing

The High Purity Fused Quartz Window plays a pivotal role in multiple stages of silicon wafer fabrication, ensuring both process integrity and equipment protection. Its unique combination of optical transparency, thermal stability, and chemical resistance allows it to perform the following functions across critical semiconductor processes:

1. Observation and Process Monitoring

Semixlab Fused Quartz windows are widely used as viewports in oxidation furnaces, diffusion furnaces, CVD and PVD chambers, enabling engineers to visually monitor wafer loading, plasma uniformity, or gas flow distribution without interrupting the process. And this visibility ensures quick identification of anomalies, helping to maintain consistent wafer quality and reducing the risk of yield loss.

2. Protective Barrier for Sensitive Components

In plasma etching, ion implantation, and PECVD, High purity quartz windows act as protective shields for sensors, detectors, and optical systems. They block corrosive gases, high-energy plasma, and particle contamination from damaging delicate instruments, thereby extending equipment lifespan and reducing maintenance costs. Their high-purity composition prevents outgassing or introducing metallic impurities into the chamber, maintaining the cleanroom-grade environment required for wafer fabrication.

3. Thermal Stability in High-Temperature Processes

During oxidation and diffusion, High purity Fused quartz windows withstand temperatures exceeding 1000°C while maintaining structural integrity and dimensional stability. Their low thermal expansion coefficient prevents stress-induced cracking, ensuring stable long-term performance under repeated thermal cycling. By providing a durable interface between heating elements and wafer carriers, quartz windows help achieve uniform thermal distribution, directly impacting wafer flatness and device performance.

4. Enabling Process Precision and Yield Enhancement

Through their optical clarity and chemical inertness, fused quartz windows contribute to higher process repeatability, minimized contamination risk, and improved device yield. In advanced wafer fabs, where each step must be tightly controlled, the reliability of quartz windows ensures consistent results, supporting mass production at sub-micron and nanometer scales.

Physical Properties of Fused Quartz Window

● Purity: ≥ 99.99% SiO₂,ultra-low metallic impurities.

● Optical Transmission: High transparency from deep UV to IR spectrum.

● Thermal Stability: Withstands continuous use at temperatures above 1000℃.

Thermal Expansion: Extremely low coefficient, ensuring dimensional stability under repeated heating cycles.

● Chemical Resistance: Excellent resistance to corrosive gases such as Cl2, HCI, NF3,and process plasmas.

● Surface Quality: Polished, defect-free surface for superior optical clarity and minimal particle generation.

Semixlab Services and Advantages

●Custom Design & Manufacturing: Flexible options for dimensions, surface finish, and optical properties.

●Technical Consultation: Backed by industry experts with 20+ years of experience in wafer manufacturing.

●Strict Quality Control: Each quartz window undergoes advanced inspection to ensure purity, transparency, and durability.

With decades of expertise in semiconductor-grade quartz materials, we supply high-performance fused quartz windows that align with the most advanced wafer manufacturing technologies. Semixlab sincerely looks forward to becoming your long-term partner in China.