| 摘要 |
PROBLEM TO BE SOLVED: To provide an aluminum nitride single crystal excellent in transmissivity of ultraviolet light in a range of wavelength of 240 to 300 nm, a laminate having layers comprising the single crystal, a method for manufacturing the laminate, and a method for manufacturing the aluminum nitride single crystal excellent in the transmissivity of ultraviolet light from the laminate.SOLUTION: The aluminum nitride single crystal containing oxygen atoms and carbon atoms is characterized by satisfying the condition of the following equation (1): [O]-[C]>0, wherein the concentration of the oxygen atoms is [O] cmand the concentration of the carbon atoms is [C] cm. |
