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Explore our premium clear quartz tube products engineered specifically for photovoltaic and solar cell production environments.
Clear quartz tubes — manufactured from high-purity fused silica (SiO₂ ≥ 99.99%) — have become indispensable components in modern solar cell fabrication. Their unmatched combination of thermal stability, chemical inertness, and optical transparency makes them the preferred material for the most demanding stages of photovoltaic (PV) cell production.
In a typical crystalline silicon (c-Si) solar cell production line, quartz tubes serve as the primary reactor vessels inside diffusion furnaces and oxidation furnaces. During the phosphorus or boron diffusion process — a step that creates the p-n junction essential to every solar cell — the silicon wafers are loaded into quartz boats and placed inside a clear quartz furnace tube at temperatures exceeding 800–1000°C. The tube must maintain dimensional stability, resist contamination, and allow uniform thermal distribution across hundreds of wafers simultaneously.
Beyond diffusion, quartz tubes are used in thermal oxidation (SiO₂ passivation layer growth), LPCVD (Low Pressure Chemical Vapor Deposition) for anti-reflection coatings, and annealing processes. Each application demands a tube that will not introduce metallic impurities, will not deform under sustained high-temperature cycling, and will withstand aggressive chemical atmospheres including chlorine-based cleaning gases.
Solar cell diffusion furnaces require quartz tubes with OH content below 5 ppm, surface roughness Ra ≤ 0.4 μm, and total metallic contamination below 20 ppb — specifications that only premium fused silica can reliably achieve at production scale.
Engineered to meet the rigorous demands of photovoltaic manufacturing environments worldwide.
Continuous operation up to 1200°C and short-term tolerance to 1400°C. Ideal for diffusion, oxidation, and LPCVD furnace environments in solar cell production lines.
Manufactured from natural crystal quartz ore sourced from Donghai County — China's premier silicon material base — ensuring minimal metallic contamination and maximum process integrity.
Low thermal expansion coefficient (0.55×10⁻⁶/°C) enables rapid temperature cycling without cracking — critical for high-throughput solar wafer batch processing.
Resistant to HCl, HF vapor, and oxidizing atmospheres used in furnace cleaning and passivation processes, ensuring long service life and reduced replacement costs.
Available in outer diameters from 10mm to 600mm with wall thickness tolerances of ±0.3mm. Fully customizable to match any diffusion furnace brand or equipment specification.
High UV-VIS light transmittance enables use in photonic annealing, rapid thermal processing (RTP), and infrared heating systems integrated in advanced PV lines.
The rapid expansion of photovoltaic manufacturing is driving unprecedented demand for high-specification quartz tube consumables.
As solar technology advances toward higher efficiency and lower cost, quartz tube requirements are evolving in parallel.
The rapid adoption of TOPCon (Tunnel Oxide Passivated Contact) and HJT (Heterojunction Technology) solar cells is creating new demand for ultra-clean quartz tubes capable of handling LPCVD poly-Si deposition and precise oxide tunnel layer growth at temperatures up to 850°C. These advanced architectures require quartz tubes with tighter dimensional tolerances and lower contamination thresholds than conventional PERC cell processes.
Leading PV manufacturers are scaling to 20–50 GW annual production capacities, requiring larger-diameter quartz furnace tubes (OD 200–400mm) capable of processing more wafers per batch. This trend is pushing quartz tube suppliers to invest in larger-format manufacturing equipment and tighter quality control systems to maintain consistent performance across high-volume orders.
Environmental regulations in Europe, the US, and increasingly in China are tightening standards on chemical emissions from PV manufacturing. Quartz tubes with improved HCl resistance and longer service life directly reduce the frequency of tube replacement and associated chemical waste, helping manufacturers meet carbon neutrality and ESG reporting requirements.
Emerging perovskite solar cells and perovskite-silicon tandem architectures require specialized annealing and sintering processes where quartz tubes play a key role in maintaining controlled atmospheric conditions. Research institutions and pilot production lines worldwide are sourcing custom quartz tubes for these next-generation cell development programs.
Modern PV diffusion furnaces increasingly incorporate automated wafer loading, real-time temperature monitoring, and AI-driven process control. Quartz tubes for these smart furnace systems must feature enhanced dimensional precision and surface finish quality to ensure compatibility with robotic handling systems and optical measurement instruments installed inside furnace chambers.
As PV manufacturers face intense margin pressure, there is growing demand for quartz tubes with extended operational lifespans — reducing the cost per wafer processed. Advanced surface treatment technologies, including precision fire-polishing and HF cleaning protocols, are being adopted to extend tube service life from 6 months to over 12 months in continuous production environments.
Clear quartz tubes serve multiple critical process steps across the entire solar cell production workflow.
The phosphorus diffusion process is the most quartz-intensive step in crystalline silicon solar cell manufacturing. In a typical tube furnace setup, a large-diameter clear quartz tube (commonly OD 200–250mm, length 1500–2000mm) serves as the process chamber. Silicon wafers — loaded in quartz boats — are pushed into the hot zone of the tube where phosphorus oxychloride (POCl₃) vapor is introduced as the dopant source.
During this process, the quartz tube is exposed to:
Only high-purity fused quartz tubes with consistent wall thickness, low bubble content, and excellent surface finish can maintain the process stability required to achieve uniform sheet resistance (Rs) across all wafers in the batch — a key parameter determining solar cell efficiency. Even minor contamination from a degraded quartz tube can introduce localized efficiency losses of 0.2–0.5% absolute across an entire wafer batch.
Lianyungang Southeast Quartz Products Co., Ltd., established in 2015, is located in Donghai County, Lianyungang City, Jiangsu Province — a national base for silicon material industry. As a professional manufacturer integrating R&D, design, production, sales and import & export trade, the company relies on the superior high-quality quartz ore resources in Donghai County, deeply engages in the deep processing of quartz glass, and has become a core supplier of quartz consumables for photovoltaic, semiconductor, laboratory, chemical, lighting and other industries with mature production technology, strict quality control system and complete customized services.
The company has standardized production workshops, advanced quartz processing equipment and a professional R&D team, with full-process production capacity from quartz raw material processing to finished product manufacturing. It can produce a full range of quartz products, including high-purity fused quartz tubes, quartz furnace tubes, quartz bell jars, quartz boats, quartz lamp holders, quartz crucibles, quartz instruments (beakers, condensers, distillers, etc.), and tri-acid purification equipment. All products are made of high-purity fused quartz raw materials, featuring excellent high-temperature resistance (up to 1200℃), thermal shock resistance, corrosion resistance, high light transmittance and good electrical insulation performance, which can meet the demanding working conditions such as vacuum environment, high-temperature sintering, atmosphere control and precision experiments.
State-of-the-art production infrastructure dedicated to delivering solar-grade clear quartz tubes at scale.
From raw quartz ore selection to finished product inspection — every step is optimized for photovoltaic industry requirements.
Adhering to the philosophy of "Quality First, Customer Supreme, Innovation-Driven, Integrity Management", the company has established a complete quality inspection system. All products undergo multiple tests such as helium mass spectrometry leak detection, pressure resistance test and purity test before leaving the factory to ensure stable performance, no impurities and no leakage.
Meanwhile, the company provides flexible customized services, and can customize product sizes, structures and specifications according to customers' equipment parameters and process requirements, quickly responding to personalized orders.
With reliable product quality, efficient delivery capacity and thoughtful after-sales service, the products of Lianyungang Southeast Quartz Products Co., Ltd. not only cover all provinces and cities in China, but also are exported to many countries and regions in Europe, America, Southeast Asia, the Middle East, etc., winning wide recognition and trust from customers at home and abroad.
In the future, the company will continue to deeply cultivate the field of quartz products, continuously improve technological innovation and production technology levels, and strive to provide global customers with higher-quality and more professional quartz product solutions, contributing to the high-quality development of high-end manufacturing and scientific research fields.
Complete range of high-purity quartz consumables for photovoltaic, semiconductor, laboratory and chemical industries.
