China Germanium Co., Ltd

Nanjing,  Jiangsu Province 
China
http://www.cnge.com.cn/

• Booth: 5139

New material industry expert since 1960.

Overview

China Germanium Co., LTD. (CNGE) was founded in May 1960, previously Nanjing "718" factory of the former Ministry of metallurgical industry, and was the one of national key construction units during the "first five-year" period. CNGE is a professional new material technology enterprise engaged in R&D, production, sales, and recycling of rare metal "germanium" as the core and other advanced high-end infrared optical materials, optical components, and other High-Tech materials. Products are widely used in aerospace, solar photovoltaic, infrared field, laser, electronic communications, security cameras, automobile, medical treatment, fire protection, industry, and other fields. With the help of advanced technology and a perfect management system, CNGE has serviced many customers with "full series" industry integration services at home as well as abroad about advanced and high-end new materials with rare metals as the core. CNGE now has several advanced, highly intelligent, and perfect production lines for related products, of which the output and quality of germanium products are particularly prominent in the global market. 

  Press Releases

• Germanium Substrate (Jun 21, 2023)

  Main Property Parameters
  Growth Method	Czochralski
  Crystal System	Cubic
  Crystal Lattice Constant	a=5.65754 Å
  Density	5.323g/cm3
  Melt Point	937.4℃
  Doping Element	no	Sb	Ga
  Type	/	N	P
  Resistivity	>35Ωcm	0.01~35 Ωcm	0.05~35 Ωcm
  EPD	<4×103/cm2	<4×103/cm2	<4×103/cm2
  Dimension(mm)	10x3,10x5,10x10,15x15,,20x15,20x20,
  	Dia50.8 mm ,dia76.2mm, Dia100 mm
  Thickness	0.5mm,1.0mm
  Polishing	One side or two sides
  Crystal Orientation	<100>,<110>,<111>,±0.5º
  Crystal Plane Orientation Accuracy	±0.5°
  Edge Orientation Accuracy	2°(special requirements <1°)
  Bevel Wafer	According to specific requirements, wafers with edge-oriented crystal planes inclined at a specific angle (inclination angle 1°-45°) can be processed.
  Surface Roughness	≤5Å(5µm×5µm)
  Packaging	Clean bag (100), Super clean room (1000)

• Germanium Substrate (Jun 21, 2023)

  Main Property Parameters
  Growth Method	Czochralski
  Crystal System	Cubic
  Crystal Lattice Constant	a=5.65754 Å
  Density	5.323g/cm3
  Melt Point	937.4℃
  Doping Element	no	Sb	Ga
  Type	/	N	P
  Resistivity	>35Ωcm	0.01~35 Ωcm	0.05~35 Ωcm
  EPD	<4×103/cm2	<4×103/cm2	<4×103/cm2
  Dimension(mm)	10x3,10x5,10x10,15x15,,20x15,20x20,
  	Dia50.8 mm ,dia76.2mm, Dia100 mm
  Thickness	0.5mm,1.0mm
  Polishing	One side or two sides
  Crystal Orientation	<100>,<110>,<111>,±0.5º
  Crystal Plane Orientation Accuracy	±0.5°
  Edge Orientation Accuracy	2°(special requirements <1°)
  Bevel Wafer	According to specific requirements, wafers with edge-oriented crystal planes inclined at a specific angle (inclination angle 1°-45°) can be processed.
  Surface Roughness	≤5Å(5µm×5µm)
  Packaging	Clean bag (100), Super clean room (1000)

• InP Wafer (Jun 21, 2023)
  Various crystals produced by China Germanium Co., Ltd. are widely used in medium wave infrared detectors and infrared thermal imagers, among which silicon (SI) and germanium (GE) are the most widely used infrared optical materials. They have the characteristics of metallic luster, hard and brittle, high refractive index, small dispersion, opaque in visible light band, but good transmittance in infrared band (3 ~ 5um). Due to the small proportion, light weight and high transmittance of monocrystalline silicon in the middle wave infrared optical system, Si is widely used as the material of optical lens and infrared window in the optical system, and it is widely used in the middle wave thermal imaging system of aerospace, aviation and ground.

  
  Product index:
  Material: Si LP5.5um
  Crystal form: N
  Resistivity: 5-40 Ω
  Crystal orientation: 111
  Specification: Φ4in、6in、8in，Or cut into small pieces
  Center thickness: 0.5mm
  Transmittance: 6-14um Tavg>85%

  Products