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PV Materials

  • [Unpublish] Multi-Crystalline Solar Wafer

  • Multi-crystalline solar wafer is the basic material for manufacturing crystalline Si PV cells. GIGASTORAGE' s annual production capacity has reached 700MW. Aside from manufacturing the multi-crystalline solar wafer, we also provide its ODM/OEM service.
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Product Specification

Material

Crystalline

Multi-Crystalline

Electrical

Type/Dopant

P/Boron

Lifetime

≧ 1 μsec

Resistivity

1.0 ~ 3.0 Ohm.cm

Geometry

Dimension

156 ± 0.5 x 156 ± 0.5mm

Rectangular Angle

90 ± 0.3 °

Bevel Edge Length

0.5 ~ 2 mm

Bevel Edge Angle

45 ± 10 °

Thickness

200 ± 20 μm

TTV

≦ 30 μm

Appearance

Edge Defect

No V-type sharp chip

Q'ty of Rounded chips ≦ 1

Depth≦0.5mm, Length≦0.5mm

Saw Mark

Rt ≦ 15μm

Bow

≦ 50 μm

Wafer Surface

No cracks and pin holes

Chemical

Carbon Conc.

1.0e18 atoms/cm3

Oxygen Conc.

8.0e17 atoms/cm3

 

Product Features

As one of our main products, the high-efficiency multi-crystalline wafer has conversion efficiency over 18.0% (differences will occur depending on the manufacturing process& production lines) with concentrated Binand less impurity on the sides (thin black edging) and therefore has received high commendation in such industrial fields. GIGASTORAGE owns a professional R&D team that continues to experiment & develop our technology, and we keep trying to raise the overall efficiency of products so as to enhance our competitive strength.


 

Rapid certification process for wafer’s efficiency

  

 

 

 

 

 

Able to design & develop Crystal Growing Systems

 

 

 

 

 

 

 

 

 

High-efficiency manufacturing equipment
 

 

Rigorous quality control
 

 

 

High-efficiency production line