Fujikura Limited

National Institute of Advanced Industrial Science and Technology

Ichirou Nagai

Tomohisa Katou

Tomonori Miura

Hiroyuki Kamata

Provided is a manufacturing device of an aluminum nitride single crystal including a crucible. An aluminum nitride raw material and a seed crystal are stored in an inner portion of the crucible. The seed crystal is placed so as to face the aluminum nitride raw material. The crucible includes an inner crucible and an outer crucible. The inner crucible stores the aluminum nitride raw material and the seed crystal inside the inner crucible. The inner crucible is also corrosion resistant to a sublimation gas of the aluminum nitride raw material. The inner crucible includes either, a single body of a metal having an ion radius larger than an ion radius of an aluminum, or includes a nitride of the metal. The outer crucible includes a boron nitride. The outer crucible covers the inner crucible.

Apparatus for manufacturing aluminum nitride single crystal, method for manufacturing aluminum nitride single crystal, and aluminum nitride single crystal

Growing community of inventors

Tsukuba, Japan

Ichirou Nagai