1. VKTECH Research Center, Nguyen Tat Thanh University, 298-300A Nguyen Tat Thanh Street, Ward 13, District 4, Ho Chi Minh City, Viet Nam
2. VKTECH Research Center, Nguyen Tat Thanh University, 298-300A Nguyen Tat Thanh Street, Ward 13, District 4, Ho Chi Minh City, South Korea
3. Department of Solid State Physics, University of Science, Vietnam National University-Ho Chi Minh City (VNU-HCM), 227 Nguyen Van Cu, Ward 4, District 5, Ho Chi Minh City, Vietnam, Viet Nam
4. Faculty of Science, Dong Nai University, 4 Le Quy Don Street, Tan Hiep Ward, Bien Hoa City 76111, Viet Nam
5. VKTECH Research Center, Nguyen Tat Thanh University, 298-300A Nguyen Tat Thanh Street, Ward 13, District 4, Ho Chi Minh City, Vietnam, Viet Nam