Ge (germânio) Cristais individuais e bolachas

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Single Crystal Germanium Wafer

PAM-XIAMEN offers 2”, 3”, 4” and 6” germanium wafer, which is short for Ge wafer grown by VGF / LEC. Lightly doped N and P type Germanium wafer can be also used for Hall effect experiment. At room temperature, crystalline germanium is brittle and has little plasticity. Germanium has semiconductor properties. High-purity germanium is doped with trivalent elements (such as indium, gallium, boron) to obtain P-type germanium semiconductors; and pentavalent elements (such as antimony, arsenic, and phosphorus) are doped to obtain N-type germanium semiconductors. Germanium has good semiconductor properties, such as high electron mobility and high hole mobility.

1. Properties of Germanium Wafer

1.1 General Properties of Germanium Wafer

1.2 Grades and Application of Germanium wafer

1.3 Standard Specs of Germanium Crystal and wafer

• Special size and orientation are available upon requested Wafers

2. Specification of Germanium Wafer

2.1 Specification of Germanium Wafer of 2”,3”,4”and 6”size

2.2 Germanium Wafer for Solar Cell

2.3 Ge Wafer (as an optical filter substrate for a longpass SWIR filter)

PAM180212-GE

2.4 Germanium Used as Thin FIR Window (PAM211121-GE)

4″ Germanium wafer with low plasma frequency, 175µm+/-25um. (100), single side polished.

3. Germanium Wafer Process

With the advancement of science and technology, the processing technique of germanium wafer manufacturers is more and more mature. In the production of germanium wafers, germanium dioxide from the residue processing is further purified in chlorination and hydrolysis steps.
1) O germânio de alta pureza é obtido durante o refino da zona.
2) Um cristal de germânio é produzido através do processo Czochralski.
3) A pastilha de germânio é fabricada através de várias etapas de corte, retificação e gravação.
4) As bolachas são limpas e inspecionadas. Durante esse processo, as bolachas são polidas de lado único ou polido de lado duplo, de acordo com os requisitos personalizados. Vem a bolacha epi-ready.
5)The thin germanium wafers are packed in single wafer containers, under a nitrogen atmosphere.

4. Application of Germanium:

O espaço em branco ou janela de germânio é usado em soluções de visão noturna e de imagem termográfica para equipamentos de segurança comercial, combate a incêndio e monitoramento industrial. Além disso, são usados ​​como filtros para equipamentos analíticos e de medição, janelas para medição remota de temperatura e espelhos para lasers.

Thin Germanium substrates are used in III-V triple-junction solar cells and for power Concentrated PV (CPV) systems and as an optical filter substrate for a longpass SWIR filter application.

5. Test of Germanium Wafer:

The resistivity of the crystal germanium wafer was measured by Four Probe Resistance Tester, and the surface roughness of Germanium was measured by profilometer.

Remark:
The Chinese government has announced new limits on the exportation of Gallium materials (such as GaAs, GaN, Ga2O3, GaP, InGaAs, and GaSb) and Germanium materials used to make semiconductor chips on July 3, 2023. Exporting these materials is only allowed if we obtains a license from the Chinese Ministry of Commerce. Hope for your understanding and cooperation!

For more information, please contact us email at victorchan@powerwaywafer.com and powerwaymaterial@gmail.com.

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