[1] Li M Q, Yang N, W G G, et al. Highly preferred orientation of Ga2O3 films sputtered on SiC substrates for deep UV photodetector application[J]. Appl. Surf. Sci., 2019, 471(31): 694-702.
[2] Higashiwaki M, Sasaki K, Murakami H, et al. Recent progress in Ga2O3 power devices[J]. Semicond. Sci. Technol., 2016, 31(3): 034001.
[3] Roy R, Hill V, Osborn E. Polymorphism of Ga2O3 and the system Ga2O3-H2O[J]. J. Am. Chem. Soc., 1952, 74(3): 719-722.
[4] An Y, Dai L, Wu Y, et al. Epitaxial growth of β-Ga2O3 thin films on Ga2O3 and Al2O3 substrates by using pulsed laser deposition[J]. J. of Adv. Dielectrics, 2019, 9(4): 1950032.
[6] Dong L, Jia R, Xin B, et al. Effects of post-annealing temperature and oxygen concentration during sputtering on the structural and optical properties of β-Ga2O3 films[J]. J. Vac. Sci. Technol. A, 2016, 34(6): 060602.
[7] Huang L, Feng Q, Han G. Comparison study of β-Ga2O3 photodetectors grown on sapphire at different oxygen pressures[J]. IEEE Photon. J., 2017, 9(4): 1-8.
[8] Shariati M, Choranneviss M, Hosseini H, et al. Effect of annealing temperature on properties of Al-Cu-N thin films deposited by DC magnetron sputtering[J]. Surf. Coat Technol., 2007, 201: 5570-5573.
[9] Ou S, Wuu D, Fu Y, et al. Growth and etching characteristics of gallium oxide thin films by pulsed laser deposition[J]. Mater. Chem. Phys., 2012, 133(2): 700-705.
[10] Nakagomi S, Kokubun Y. Crystal orientation of β-Ga2O3 thin films formed on c-plane and a-plane sapphire substrate[J]. J. Cryst. Growth, 2012, 349(1): 12-18.
[12] Vancoppenolle V, Jouan P, Wautelet M, et al. DC magnetron sputtering deposition of TiO2 films in argon-oxygen gas mixtures: Theory and experiments[J]. Surf. and Coat. Technol., 1999, 116-119: 933-937.
[13] Behrisch R. Sputtering by Particle Bombardment Ⅰ[M]. Berlin: Springer, 1981: 145.
[15] Passlack M, Schubert E F, Hobson W S, et al. Ga2O3 films for dielectronic and optoelectronic applications[J]. J. Appl. Phys., 1995, 77(2): 686-693.
[16] Ramachandran K R, Dendooven J, Botterman J. Plasma enhanced atomic layer deposition of Ga2O3 thin films[J]. J. Mater. Chem. A, 2014, 2(45): 19232-19238.
[18] Monroy E, Omnès F, Calle F. Wide-bandgap semiconductor ultraviolet photodetectors[J]. Semicond. Sci. Technol., 2003, 18(4): R33-R51.