High Quality Polysilicon 6N-8N

 

High purity polysilicon in the 6N–8N range (99.9999%–99.999999%) is primarily used in semiconductor and high-end electronic applications where impurity control directly affects device performance and yield.

Unlike lower-grade polysilicon used in standard solar applications, 6N–8N material is designed for environments where trace elements such as boron and phosphorus must be strictly controlled at ppb levels. Even small variations in impurity content can impact resistivity, crystal growth behavior, and final wafer quality.

This grade is typically produced through advanced purification processes such as the Siemens method, followed by strict quality control to ensure batch consistency.

Get Latest Price

Fast reply within 12 hours

 

 

Item	Specification
Purity	6N – 8N (99.9999% – 99.999999%)
Resistivity	≥ 1000–3000 Ω·cm
Boron (B)	≤ 0.1 ppb
Phosphorus (P)	≤ 0.1 ppb
Carbon (C)	≤ 0.5 ppm
Oxygen (O)	≤ 0.5 ppm
Metallic impurities	≤ ppb level
Form	Chunk / Rod / Granular
Size	Customized

 

 

In practical applications, the difference between 6N and 8N polysilicon is not just numerical purity, but how it performs in crystal growth and device fabrication.

6N Polysilicon

Suitable for high-end solar and some electronic applications

Balanced cost-performance

Stable for mono-crystalline growth

 

7N–8N Polysilicon

Required for semiconductor-grade applications

Ultra-low dopant content

Higher control over resistivity and defect density

Better yield in wafer production

 

👉 Choosing the right polysilicon grade is critical-learn how to select between 6N and 8N polysilicon based on your device performance and process requirements.

 

 

Semiconductor Manufacturing

Used for:

• single crystal silicon growth (CZ / FZ)
• wafer production
• integrated circuits

Impurity control directly affects device performance and yield rate.

 

High-Efficiency Solar Cells

Applied in:

• mono-crystalline silicon
• high-efficiency PV modules

Higher purity helps reduce recombination losses and improve efficiency.

 

Advanced Electronic Materials

Used in:

• power electronics
• sensors
• precision silicon-based components

Get Price & Specs

Free quotation available

 

 

High purity polysilicon is typically produced using chemical vapor deposition (CVD) in a closed system.

Key control points include:

• purification of trichlorosilane (TCS)
• strict control of reaction environment
• contamination prevention during deposition
• post-processing and handling under clean conditions

Each batch is tested to ensure:

• impurity consistency
• resistivity stability
• uniform structure

 

 

Due to high purity requirements, packaging and handling are critical.

• vacuum or inert gas packaging
• anti-contamination protection
• clean handling environment

Improper handling can introduce impurities and affect performance.

 

 

• stable production capacity supported by large-scale manufacturing
• consistent batch supply with strict quality control
• annual production and sales capacity of 150,000 MT
• over 30 years of industry experience in ferroalloy and silicon materials
• lead time: 10–20 days depending on order size
• customized specifications available for different applications

With decades of production and export experience, we understand the requirements of different markets and ensure stable supply, consistent quality, and reliable delivery for long-term cooperation.Learn More About ZhenAn

 

 

Each batch includes:

• COA (Certificate of Analysis)
• impurity breakdown report
• resistivity data

Ensuring traceability and consistency.

 

If you are sourcing 6N–8N polysilicon for semiconductor or high-efficiency applications, consistency and impurity control are critical.

Contact us for detailed specifications, COA, and the latest quotation.

 

Request the latest Quote

 

 

What is the difference between solar-grade and semiconductor-grade polysilicon?

Semiconductor-grade polysilicon requires much lower impurity levels, especially boron and phosphorus, and stricter control over electrical properties.

Why are boron and phosphorus critical?

They act as dopants and directly influence electrical conductivity and device behavior.

Can 6N polysilicon be used for semiconductors?

In some cases, but most semiconductor applications require 7N–8N for better performance.

How does purity affect crystal growth?

Higher purity reduces defects and improves yield in wafer production.

Is customization available?

Yes, size, form, and specifications can be adjusted based on application requirements.

 

 

 

Hot Tags: high quality polysilicon 6n-8n, China high quality polysilicon 6n-8n manufacturers, suppliers, factory