Before growing a compound semiconductor single crystal, it is usually necessary to synthesize polycrystalline materials of the compound semiconductor. Pyrolytic Boron Nitride boats are ideal vessels for polycrystalline synthesis. Polycrystalline is synthesized using the horizontal directional solidification method. The directional solidification furnace is divided into three temperature zones. Taking gallium arsenide polycrystalline as an example, arsenic element sublimates in the low-temperature zone (around 630°C). After passing through the medium-temperature zone, it sublimates and gradually combines with gallium in the high-temperature zone (1250 ~ 1255℃) to form gallium arsenide polycrystalline. PBN boats are used as reaction vessels in high-temperature areas.

Pyrolytic Boron Nitride (PBN) Boat Crucible Dimensions

Item

Length

Width

Height

Thickness

Radius

PBN-B1

6”

2”

1”

1”

0.035”

PBN-B2

8”

2”

1”

1”

0.035”

PBN-B3

10”

2”

1”

1”

0.04”

PBN-B4

14”

2”

1”

1”

0.04”

PBN-B5

16”

2”

1”

1”

0.04”

PBN-B6

6”

3”

1.5”

1.5”

0.035”

PBN-B7

8”

3”

1.5”

1.5”

0.035”

PBN-B8

10”

3”

1.5”

1.5”

0.04”

PBN-B9

14”

3”

1.5”

1.5”

0.04”

 Application

Used for horizontal directional solidification method to grow III-V compound polycrystals, etc.

PBN boat is an ideal container for polycrystalline synthesis.

Packing

As a ceramic material, boron nitride is quite fragile in a lot of cases. The Pyrolytic Boron Nitride Boats are usually held in plastic bags by vacuum, and protected with heavy foam.