Decomposition Behavior of GaN Under Solid and Ambient N2 Pressure

Fumio Kawamura; Hidenobu Murata; Naoomi Yamada

doi:10.1016/j.matlet.2024.137185

Journal article Decomposition Behavior of GaN Under Solid and Ambient N2 Pressure

; ;

Download file (611 KB)
Download as zip (557 KB)

Collection

Citation

Fumio Kawamura, Hidenobu Murata, Naoomi Yamada. Decomposition Behavior of GaN Under Solid and Ambient N2 Pressure. Materials Letters. 2024, 374 (), 137185. https://doi.org/10.1016/j.matlet.2024.137185

(BibTeX)

Description:

(abstract)

The decomposition curve of GaN under solid pressure showed a considerably moderate increase compared to that under a N2 pressure. Such difference was attributed to the N2 dissolution in the Ga melt, where a high N2 pressure creates a supersaturated GaN state, which effectively prevent its decomposition. Conversely, under a solid pressure, the increase in the GaN decomposition temperature followed a common change in enthalpy, which is consistent with its typical thermodynamic behavior. The decomposition behavior of GaN under a solid pressure demonstrated its successful high-temperature annealing using a belt-type high-pressure apparatus. Therefore, this study provides valuable insights into the thermodynamic stability of GaN under different pressures, which is critical for optimizing high-performance GaN-based devices.

Rights: