Theoretical study of the composition pulling effect in InGaN metalorganic vapor-phase epitaxy growth

被引:39
|
作者
Inatomi, Yuya [1 ]
Kangawa, Yoshihiro [1 ,2 ,3 ]
Ito, Tomonori [4 ]
Suski, Tadeusz [5 ]
Kumagai, Yoshinao [6 ]
Kakimoto, Koichi [1 ,2 ]
Koukitu, Akinori [6 ]
机构
[1] Kyushu Univ, Dept Aeronaut & Astronaut, Fukuoka 8190395, Japan
[2] Kyushu Univ, RIAM, Fukuoka 8168580, Japan
[3] Nagoya Univ, Inst Mat & Syst Sustainabil IMaSS, Nagoya, Aichi 4648601, Japan
[4] Mie Univ, Dept Phys Engn, Tsu, Mie 5148507, Japan
[5] Polish Acad Sci, Inst High Pressure Phys, Sokolowska 29-37, PL-01142 Warsaw, Poland
[6] Tokyo Univ Agr & Technol, Dept Appl Chem, Koganei, Tokyo 1848588, Japan
关键词
INXGA1-XN; GAN; SEMICONDUCTORS; INN;
D O I
10.7567/JJAP.56.078003
中图分类号
O59 [应用物理学];
学科分类号
摘要
The composition pulling effect in metalorganic vapor-phase InGaN epitaxy was theoretically investigated by thermodynamic analysis. The excess energies of biaxial-strained InxGa1-xN were numerically calculated using empirical interatomic potentials considering different situations: (i) coherent growth on GaN(0001), (ii) coherent growth on In0.2Ga0.8N(0001), and (iii) bulk growth. Using the excess energies, the excess chemical potentials of InN and GaN alloys were computed. Our results show that compressive strain suppresses In incorporation, whereas tensile strain promotes it. Moreover, assuming chemical equilibrium, the relationship between the solid composition and the growth conditions was predicted. The results successfully reproduced the typical composition pulling effect. (C) 2017 The Japan Society of Applied Physics
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页数:3
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