3-600mm photovoltaic diffusion furnace heater quartz tube is a high-purity, high-temperature resistant quartz glass product designed specifically for the heating system of photovoltaic diffusion furnaces. This product is made of high-quality fused silica material, which has excellent thermal stability, chemical inertia and high light transmittance. It can work stably for a long time in a high temperature (up to 1200 ° C) environment, ensuring uniform heating and efficient diffusion process in the manufacturing process of photovoltaic cells.

Frequently Asked Questions (FAQ)

Q1: What is the maximum operating temperature of this quartz tube? Can it withstand extreme temperature fluctuations?

A: The quartz tubes in our photovoltaic diffusion furnace heaters have a softening point ranging from 1650°C to 1730°C. They can operate stably for extended periods at 1200°C and withstand short-term peak temperatures of up to 1450°C. Additionally, thanks to its extremely low coefficient of thermal expansion (approximately 5.5×10⁻⁷/°C), the product exhibits excellent thermal shock resistance. It can withstand extreme thermal cycling without fracturing, effectively addressing the challenges posed by sudden temperature changes in the photovoltaic diffusion process.

Q2: What is the purity of the quartz tube? Will it contaminate photovoltaic cells?

A: We use high-purity quartz sand of 4N to 5N grade (SiO₂ purity of 99.99%–99.9995%) as raw material, with key metal impurities strictly controlled below 5 ppm. This high purity ensures that the quartz tubes do not crystallize, peel, or release impurities at high temperatures, fundamentally eliminating process contamination of photovoltaic cells and safeguarding their conversion efficiency and yield.

Q3: What special sizes or custom shapes do you support?

A: We offer a full range of sizes with outer diameters from 3 mm to 600 mm, and wall thicknesses can be flexibly adjusted between 0.5 mm and 50 mm as needed. In addition to standard straight tubes, we are equipped with high-precision CNC cold-forming centers that support non-standard customization services such as hole drilling, flange welding, custom bending, and special interface sealing, meeting the assembly requirements for various types of specialty glass manufacturing and specialized diffusion furnaces.

Product Features

-High purity material: using high-purity quartz sand (SiO ₂ content ≥ 99.99%) to reduce impurity pollution and ensure semiconductor grade process requirements.  

-High temperature resistance: It can withstand high temperatures of 1000 ° C~1200 ° C for a long time and 1300 ° C for a short period of time. The coefficient of thermal expansion is extremely low, avoiding high-temperature deformation.  

-Excellent thermal stability: low thermal stress, strong thermal shock resistance, suitable for rapid temperature rise and fall processes.  

-High transparency: It has high transmittance to infrared radiation, improves heating efficiency, and reduces energy consumption.  

-Corrosion resistance: resistant to acid and alkali corrosion, suitable for various chemical gas environments (such as POCl ∝ diffusion process).  

-Precision dimensions: Inner diameter of 3mm to 600mm is optional, with uniform wall thickness to ensure heating uniformity and process consistency.  

Application Fields

This product is widely used in high-temperature heating systems in the fields of photovoltaics, semiconductors, and scientific research, including:

1. Manufacturing of photovoltaic cells

-Diffusion process: used for the diffusion of phosphorus (P) or boron (B) to form PN junctions, which is the core component in the production of crystalline silicon solar cells.  

-Annealing process: High temperature annealing repairs silicon wafer defects and improves battery efficiency.  

2. Semiconductor industry

-High temperature oxidation, diffusion, and CVD (chemical vapor deposition) processes in integrated circuit (IC) manufacturing.  

-High temperature treatment of power devices such as IGBT and MOSFET.  

3. Research and Laboratory

-High temperature sintering and heat treatment experiments in materials science.  

-High temperature components for precision optics and vacuum systems.  

What problems can we solve?  

1. Uneven heating leads to process deviation

-Traditional metal heating tubes are prone to temperature gradients, while the high transparency and uniform thermal conductivity of quartz tubes can ensure consistent temperature distribution and improve battery cell yield.    

2. Impurity pollution affects battery efficiency

-High purity quartz tubes prevent metal ion contamination, ensure the purity of diffusion processes, and improve the conversion efficiency of solar cells.  

3. The issue of lifespan in high-temperature environments

-Ordinary glass or metal tubes are prone to aging and deformation under long-term high temperatures, while quartz tubes have excellent thermal shock resistance and high temperature resistance, resulting in a longer service life.  

4. Chemical corrosion causes equipment damage

-In corrosive gas environments such as POCl ∝, the chemical inertness of quartz tubes can effectively resist corrosion and reduce equipment maintenance costs.  

Customized service

We can provide personalized customization solutions according to customer needs, including:

Size customization: Supports non-standard inner diameter, length, and wall thickness adjustments to adapt to different models of diffusion furnaces.  

Shape customization: straight pipes, U-shaped pipes, irregular pipes, etc., to meet special heating layout requirements.  

Surface treatment: Optimization solutions such as sanding and coating (such as infrared anti reflection film) can be provided.  

Accessory integration: equipped with flanges, sealing rings, support frames, etc., to achieve instant installation and use.  

Why choose our quartz tube?  

Strict quality control: Each batch of products undergoes high-temperature testing, size inspection, and transmittance analysis to ensure stable performance.  

Rich industry experience: Serving photovoltaic companies and semiconductor manufacturers worldwide, our products have undergone rigorous process validation.  

Quick response: Supports small-scale trial production and large-scale supply, with short delivery cycles and comprehensive after-sales technical support.  

Contact us for exclusive quartz tube solutions for photovoltaic diffusion furnaces, to assist in efficient and stable solar cell production!  

Luverre Quartz is a manufacturer specializing in quartz tubes and other quartz items.We have over 18 years experience with the production of quartz tubes, we will be your reliable partner on quartz tubes and other quartz items.

Luverre Quartz can manufacture customized quartz tubes in various shapes, such as spiral, square, round, with processing including cutting, bending, welding, etc., and available in different colors, such as transparent quartz tubes, opaque quartz tubes, milky white quartz tubes, red quartz tubes, and so on.