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Germanium Substrates

Germanium single crystal wafers are an important semiconductor substrate material. These high-quality substrates are primarily used in CPV, outer-space solar-cell panel and high-bright light-emitting diode applications.


OST Photonics offers high quality germanium substrates for researchers and industries. There are four types of germanium materials for you to choose from: undoped Ge, N-type Ge (As doped), N-type Ge (Sb doped) and P-type Ge (Ga doped). Crystal orientation, size and thickness can be customized according to your requirements.


Application of Germanium Substrates


  • Infrared optical device

  • Semiconductor device

  • Consumer electronics

  • Solar cell panels


Advantages of Germanium Substrates


  • Excellent machinability

  • Corrosion resistance

  • Stable chemical properties

  • Good hole mobility and electron mobility

  • Small band gap


Ability of Germanium Substrates


  • Orientation:<100>,<110>,<111>, etc.

  • Dimension: 2", 3", 4", 6", 5x5mm, 10x5mm, 10x10mm, 20x20mm, etc.

  • Thickness: 0.5mm, 1.0mm, etc.

  • Available items: wafers, substrates, blanks and customized optics


Specification and Properties of Germanium Substrates


Growth Method

Czochralski

Crystal Structure

Cubic

Crystal Lattice Constant

a=5.65754 Å

Density

5.323g/cm3

Melt Point

937.4℃

Conduct Type

N-type

P-type

/

Dopant

As,Sb

Ga

undoped

Resistivity

0.005-30 ohm.cm

0.005-0.04 ohm.cm

>35 ohm.cm

Etch Pit Density (EPD)

<4000 /cm2

<4000 /cm2

<4000 /cm2

Orientation

<100>,<110>,<111>, etc.

Orientation Tolerance

±0.5° or better

Dimension

2", 3", 4", 6", 5x5mm, 10x5mm, 10x10mm, 20x20mm, etc.

Dimension Tolerance

±0.1 mm or better

Thickness

0.5mm, 1.0mm, etc.

Thickness Tolerance

±0.05 mm or better

Surface Finish

Single side polished (SSP)/Double sides polished (DSP)

Surface Roughness

Ra<5Å (5µmx5µm)

Package

Class 100 clean bag, Class 1000 super clean room


Contact Us
Welcome your presence, you can send us an email, we will get in touch with you within 24 hours.
Head Office: No. 66, 8 Group, Chengbei Village, Yanguan Town, Jiaxing 314411, China;

Hangzhou Branch: Room 1012, Chunhua Bussiness Center, No. 159, Hangbo Street, Shangcheng District, Hangzhou 310009, Zhejiang, China
Head Office: No. 66, 8 Group, Chengbei Village, Yanguan Town, Jiaxing 314411, China;

Hangzhou Branch: Room 1012, Chunhua Bussiness Center, No. 159, Hangbo Street, Shangcheng District, Hangzhou 310009, Zhejiang, China
sales@ostphotonics.com; info@ostphotonics.com +86-0571-86780460