Institute for Single Crystals - Materials and Products - Large-Size Sapphire - Substrate Blanks

Institute for Single Crystals

National Academy of Sciences of Ukraine

61001, Ukraine, Kharkiv, 60 Nauky Ave., phone/fax: +38(057)340-86-19, e-mail:

We offer

Product innovation

Sapphire Substrates for Micro- and Optoelectronics


Materials and Products - Large-Size Sapphire Crystals

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Sapphire Substrate Blanks

Sapphire substrate blanks for Micro- and Optoelectronics with diameter from 25 to 250 mm and thickness to 40 mm

Size, mmDiameter 25...250, thickness to 40
Accuracy of preparation, mm
in diameter
in thickness


Blocks, twins, twin layers and cracks, inclusions that are visible in polarized lightNot allowed
Quality of the surfacesGrinding finish
Roughness of the surfaces (Ra), Å< 1
Transmission (%):
visible and IR spectral region (to 4,5 μm)
UV spectral region (0,2 μm)


Internal voltages, kg/mm2≤2
Crystallographic orientation

Our adress:

61001, Kharkov, 60 Lenin Ave.
phone:  +38(057)340-86-19,
fax:       +38(057)340-86-19,