Germanium Crystal Sheet (Ge Crystal Sheet)

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CY1071 Germanium Crystal Sheet (Ge Crystal Sheet)

Catalog No.	CY1071
CAS Number	10038-98-9
Purity	> 99.9999%
Crystal Structure	Single Crystal & Polycrystalline
Conductive Type	N-type

Stanford Advanced Materials (SAM) produces high quality germanium crystal sheet with theoretical transmittance and homogeneity of refractive index. Blanks, windows, lenses and prisms are all available with a diameter up to 300 mm for monocrystal and 380 mm for polycrystal. So just provide us your required specification.

Other Germanium products: Germanium Powder, Germanium Metal.

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CY1071 Germanium Crystal Sheet (Ge Crystal Sheet)

Description

Specification

Germanium Crystal Sheet Description

Germanium Crystal Sheet can be used as windows, lenses, prisms, etc. for infrared detection and imaging systems. Infrared single-crystal germanium is widely used in 2um to 20um infrared optics and laser systems. In addition, single-crystal germanium has a good transmittance within the infrared and far-infrared bands.

Germanium single-crystal growth

Germanium single crystal growth

Now the company has a single-crystal furnace, with an annual output of 25 tons of germanium single crystal, and 5 tons of silicon single crystal. Using advanced equipment at home and abroad, and decades of crystal preparation technology, with its own district in molten germanium ingots as raw materials, production: electronic grade germanium single crystal: resistivity range 0.25 to 50 ohm-cm, the resistivity uniformity <15%, crystal to the (111), crystal orientation deviation < Shan'xi, dislocation density, 1000 ~ 3500 / L.
Minority carrier lifetime >150. Germanium single crystal is mainly used in the production of germanium transistors because the electron and hole transfer rate of germanium is higher than that in high-speed switching circuits.

Germanium Crystal Sheet Specifications

Material description		Processing parameter
Purity	> 99.9999%	Diameter	Ф5-Ф300mm (single crystal) /Ф5-Ф380mm(polycrystalline)
Crystal structure	single crystal & polycrystalline	Plainness	20μm
Conductive type	N-type	Vertical degree	﹤5̊
Crystal orientation	<111>	Chamfering	0.2 ~ 1mm
Resistivity (provide germanium with lower resistivity according to the customer's needs)	5-40 Ohm-cm	Broken edge	≤0.5mm
		ETV	≤0.05mm
		Tolerance	diameter:+/- 0.025mm length and width:+/- 0.05 ~ +/-0.1mm thickness:+/- 0.025mm
		Surface quality	Plain slice: slice spherical surface:D25 ~ D76 polishing window: according to customers' needs

We also provide tailor-made Infrared germanium windows.

Germanium Crystal Sheet Applications

1. Infrared Optics:

Germanium is transparent in the infrared (IR) part of the electromagnetic spectrum, particularly in the mid-wave infrared (MWIR) and long-wave infrared (LWIR) regions. Germanium crystal sheets are used as windows, lenses, and optical components in IR imaging systems, thermal imaging cameras, and IR spectroscopy devices.

2. Thermal Imaging Cameras:

Germanium wafers are a key component in thermal imaging cameras and infrared detectors.

3. Infrared Spectroscopy:

Germanium crystal sheets are used as windows and prisms in IR spectroscopy instruments.

4. IR Sensors and Detectors:

Germanium-based photodetectors and sensors are used in various applications, including flame detection, gas analysis, and temperature monitoring in industrial and scientific settings.

5. Terahertz (THz) Imaging and Spectroscopy:

Germanium crystal sheets are used in THz imaging systems and spectroscopy for applications like security screening and material characterization.

6. Semiconductor Industry:

Germanium was historically used as a semiconductor material, and it is still employed in some specialized electronic devices, such as high-speed transistors, diodes, and photodetectors.

7. X-ray and Gamma-ray Detection:

Germanium detectors, often made from high-purity germanium crystals, are used for high-resolution X-ray and gamma-ray spectroscopy in medical imaging, nuclear physics experiments, and security screening.

8. High-Index Optical Coatings:

Germanium is used as a substrate for optical coatings with high refractive indices, allowing for improved light control and antireflection coatings.

9. Solar Cells:

Germanium-based solar cells have been developed for space applications due to their high efficiency and radiation resistance.

10. Aerospace and Defense:

Germanium crystal sheets are used in various aerospace and defense applications, including missile guidance systems, thermal imaging for night vision, and remote sensing.

11. Space Telescopes:

Germanium has been considered for use in the construction of space-based telescopes for IR and THz observations due to its IR transparency.

12. Laser Optics:

Germanium is used as an optical material in some high-power infrared laser systems.

Germanium Crystal Sheet Packaging of SAM

Our germanium crystal sheet is clearly tagged and labeled externally to ensure efficient identification and quality control. Great care is taken to avoid any damage which might be caused during storage or transportation.

Specification

Material description		Processing parameter
Purity	> 99.9999%	Diameter	Ф5-Ф300mm (single crystal) /Ф5-Ф380mm(polycrystalline)
Crystal structure	single crystal & polycrystalline	Plainness	20μm
Conductive type	N-type	Vertical degree	﹤5̊
Crystal orientation	<111>	Chamfering	0.2 ~ 1mm
Resistivity (provide germanium with lower resistivity according to the customer's needs)	5-40 Ohm-cm	Broken edge	≤0.5mm
		ETV	≤0.05mm
		Tolerance	diameter:+/- 0.025mm length and width:+/- 0.05 ~ +/-0.1mm thickness:+/- 0.025mm
		Surface quality	Plain slice: slice spherical surface:D25 ~ D76 polishing window: according to customers' needs