Pyrolytic Boron Nitride VGF Crucible

typical thickness is 0.8~1.5mm

SKU: PBN-VGFC

Pyrolytic Boron Nitride VGF Crucible, PBN Ceramic VGF Crucible

VGF systems are tailor-made for producing single-crystal compound semiconductor crystals with minimal defect density and for producing gallium arsenide (GaAs), indium phosphide (InP), and gallium phosphide (GaP) crystals for high-tech industries such as optoelectronics (LED and laser systems), semiconductor materials and technology, high-frequency technology, solar technology, and telecommunication technology. PBN is becoming a widely used material in vacuum processes due to its high density and high purity. The CVD process gives this pyrolytic boron nitride an almost perfect layered structure, resulting in anisotropic thermal conductivity, making it an ideal material for manufacturing crystal growth crucibles. Pyrolytic Boron Nitride VGF Crucibles are a type of crucible used in vertical gradient freezing (VGF) technology, mainly for growing semiconductor materials such as GaAs single crystals and InP single crystals.

Edgetech provides custom PBN Crucibles and VGF / LEC / Conical / MBE / OLED crucibles.

Pyrolytic Boron Nitride Specification

Item		Value		Unit
Lattice constant		a:2.504×10^-10		μ m
		c:6.692×10^-10
Density		2.0-2.19		g/cm3
Resistivity		3.11×10¹¹		Ω·cm
Tensile strength (ab)		153.86		N/mm2
Bend strength	c	243.63		N/mm2
	ab	197.76		N/mm2
Elastic modulus		235690		N/mm2
thermal conductivity		“a” direction	“c” direction
	(200℃)	60	2.60	W/m·k
	(900℃)	43.70	2.80	W/m·k
Dielectric strength (at RT)		56		KV/mm

Specification of the VGF Crucible

Item	Inside Diameter	Height	Thickness
VGF-C1	2″	10″	0.035″
VGF-C2	3″	10″	0.035″
VGF-C3	4″	8″	0.035″
VGF-C4	5″	8″	0.04″
VGF-C5	6″	7″	0.04″
VGF-C6	8″	20″	0.08″

We can provide customized crucible.

Features of PBN VGF Crucible

-Can make large crucibles (maximum diameter 8 inches, maximum height 18 inches)
-Purity > 99.99%
-Many times of use (with excellent interlayer structure)

Packing of PBN VGF Crucibles

Boron nitride is quite fragile as a ceramic material. Pyrolytic Boron Nitride VGF crucibles are usually held in plastic bags under vacuum and protected with heavy foam.