Theoretical study of phase stability of In<sub>x</sub>Ga<sub>1-x</sub>N alloys

Won Ha Moon; Jong Pa Hong; Soo Min Lee; Dong Woohn Kim

doi:10.1117/12.675674

18 April 2006 Theoretical study of phase stability of In_xGa_1-xN alloys

Won Ha Moon, Jong Pa Hong, Soo Min Lee, Dong Woohn Kim

Proceedings Volume 6180, Photonics, Devices, and Systems III; 61800U (2006) https://doi.org/10.1117/12.675674
Event: Photonics, Devices, and Systems III, 2005, Prague, Czech Republic

Abstract

Molecular-mechanics based simulations are applied to investigate the structures and phase stability of InGaN alloys. The variation of bond lengths and angles with increasing In composition is found. This causes the considerable structural change and the phase separation of InGaN alloys. The interaction parameter (Ω= -1.3435x + 6.1607 (kcal/mol) ) dependent on In composition is also calculated. The phase diagram for InGaN alloys shows an asymmetry with respect to x0.5. The critical temperature for the phase separation is 1392 K at x = 0.44. These results are in agreement with experimental results.

Citation Download Citation

Won Ha Moon, Jong Pa Hong, Soo Min Lee, and Dong Woohn Kim "Theoretical study of phase stability of In_xGa_1-xN alloys", Proc. SPIE 6180, Photonics, Devices, and Systems III, 61800U (18 April 2006); https://doi.org/10.1117/12.675674

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