研究実績

最近に発表した論文です。

2019

1. Sujun Guan, Taito Watabe, Liang Hao, Hiroyuki Yoshida, Yanling Cheng, Kaowen Zauo, Yun Lu, “Enhanced photocatalytic activity of potassium-doped titania photocatalyst films with nanosheet structure”, Mater. Lett. 242 (2019) 174-178. (Q3, IF 2.99)
2. Liang Hao, Jiancheng Yan, Sujun Guan, Lijun Cheng, Qian Zhao, Zheng Zhu, Yao Wang, Yun Lu, Jizi Liu, “Oxygen vacancies in TiO₂/SnO_x coatings prepared by ball milling followed by calcination and their influence on the photocatalytic activity”, Appl. Surf. Sci. 466 (2019) 490-497. (Q1, IF 4.93)
3. Liang Hao, Siqi Tang, Jiancheng Yan, Lijun Cheng, Sujun Guan, Qian Zhao, Zheng Zhu, Yun Lu, “Solar-responsive photocatalytic activity of amorphous TiO₂ nanotube-array films”, Mater. Sci. Semicond. Process. 89 (2019) 161-169. (Q3, IF 2.83)
4. Yun Lu, Sujun Guan, Liang Hao, “Development and application of a novel coating formation technology-mechanical coating technique”, J. Xihua. Univ: Nat. 38 (2019) 51-64. (In Chinese)
5. Mariko Murayama, Kensaku Yoda, Keita Shiraishi, Iain F. Crowe, Shuji Komuro, and Xinwei Zhao, “Photoluminescence enhancement and change in the second nearest neighbor distance of Sm-doped TiO₂ thin films”, Phys. Status Solidi B (2019) 1800522. (Q3, IF 1.67)
6. Sujun Guan, Liang Hao, Mariko Murayama, Xiaohua Xie, Shuji Komuro, Xinwei Zhao, “Influence of anneal temperature in air on surface morphology and photoluminescence of ZnO thin films”, J. Phys.: Conf. 522 (2019) 012004.
7. Mariko Murayama, Kensaku Yoda, Shuji Komuro, Hiroaki Nitani, Iain F. Crowe and Xinwei Zhao, “Influence of Al on the local structure of Nd-doped TiO2 thin films: A combined luminescence and X-ray absorption fine structure analysis”, Mater. Sci. & Eng. B 246 (2019) 49-52. (Q3, IF 3.61)
8. Sujun Guan, Naho Nasu, Yu Zhang, Yuri Tamamoto, Maria Yamanobe, Xinwei Zhao, “Oxygen vacancy and Mn²⁺ induced ferromagnetism in Mn-doped ZnO thin films”, Sci. China. Technol. Sc. 2019, 1-5. (Q3, IF 2.25)
9. Mariko Murayama, Kensaku Yoda, Shuji Komuro, Iain F. Crowe and Xinwei Zhao, “Effect of Al co-doping on the luminescence properties of Nd³⁺-doped TiO₂ thin films”, Journal of Luminescence 216 (2019) 116656. (Q3, IF 2.91)
10. Jiancheng Yan, Juan Zhao, Liang Hao, Yifei Hu, Tongyang Liu, Sujun Guan, Qian Zhao, Zheng Zhu, Yun Lu, “Low-temperature S-doping on N-doped TiO₂ films and remarkable enhancement on visible-light performance”, Mater. Res. Bull. 120 (2019) 110594.

2018

1. Sujun Guan, Leo Yamawaki, Ping Zhang, Xinwei Zhao*, "Charge-transfer effect of GZO film on photochemical water splitting of transparent ZnO@GZO films by RF magnetron sputtering", Top. Catal., 161 (2018) 1585-1590. (Q3, IF 2.486)
2. Xiaohua Xie, Xianghua Feng*, Xinwei Zhao*, "The effects of electronic structures of four benzodithiophene-based copolymers on their photovoltaic performances", Comput. Theor. Chem., 1145 (2018) 28-36.
3. Xiaohua Xie, Xinwei Zhao, Ming Li*, "Theoretical study on the photoelectric properties of a class of copolymers based on benzodithiophene for solar cells", Int. J. Polym. Sci., 12 (2018) 1-11.
4. Mariko Murayama, Kensaku Yoda, Keita Shiraishi, Sujun Guan, Shuji Komuro and Xinwei Zhao, Photoluminescence and Structural Analysis of Samarium Doped TiO2 Thin Films and Their Applications to Visible LEDs, Optics and Photonics Journal, 8, 5 (2018) 146-164.

2017

1. Sujun Guan, Liang Hao, Hiroyuki Yoshida, Yun Lu, Xinwei Zhao*, "A safe and efficient approach to fabricate black carbon-doped rutile titania by substitution of oxygen at carbon sites in titanium carbide film", Mater. Express., 7 (2017) 509-515. (Q3, IF 2.062)
2. Yu Zhang, Naho Nasu, Xinwei Zhao*, " Influence of annealing temperature on Mn-doped ZnO diluted magnetic semiconductor thin films", J. Phys. Conf. Series 864 (2017) 012061.
3. Mariko Murayama, Yushi Yanagida, Shuji Komuro, Xinwei Zhao*, "Effect of doping concentration on Nd-related photoluminescence in TiO₂ with Al co-doping", J. Phys. Conf. Series 864 (2017) 012068.

2016

K. Sato, S. Kim, S. Komuro, X. Zhao*, "Characteristics of Cu-doped amorphous NiO thin films formed by RF magnetron sputtering", Jpn. J. Appl. Phys., 55 (2016) 06GJ10-1-5 (Q4, IF 1.384).

2015

1. Y. Zhang, J. Okamoto, N. Nasu, X. Zhao*, "Room temperature ferromagnetism in magnetron sputtering prepared Mn-doped ZnO thin films", Jpn. J. Appl. Phys., 54 (2015) 06FJ08-1-3 (Q4, IF 1.384).
2. M. Kato, M. Nishimuara, K. Uki, S. Harako, X. Zhao*, "A prospect for applications of graphene fabricated from an organic solution", Microelectron. Eng., 141 (2015) 280-284. (Q3, IF 1.806).

2014

1. Y. Aizawa , T. Ohtsuki , S. Harako , S. Komuro , N. Hirao, X. Zhao*, “Sensitization Effect of Al-codoping on Nd-related Photoluminescence in TiO₂ Matrix”, Jpn. J. Appl. Phys., 53 (2014) 06JG06. (Q4, IF 1.384).
2. M. Kato, K. Uki, S. Harako, X. Zhao*, “Fabrication of graphene and graphite thin films from organic coating”, Microelectron. Eng., 121(2014) 96-99 (Q3, IF 1.806).
3. K. Uki, M. Kato, S. Harako, X. Zhao, “AFM Induced Local Oxidation of HOPG”, MRS Proc., 1586 (2014) Jsapmrs13-1586-6379.
4. K. Araki, R. Takeda, H. Sudo, K. Izunome, X. Zhao*, “Dependence of Atomic-Scale Si(110) Surface Roughness on Hydrogen Introduction Temperature after High-Temperature Ar Annealing”, J. Surf. Eng. Mater. Adv. Technol., 4 (2014) 249-256.
5. K. Araki, R. Takeda, K. Izunome, X. Zhao*, “Effect of hydrogen for preservation of reconstructed surfaces”, Solid State Phenomena, 205-206 (2014) 331-340.

2013

1. T. Ohkane, K. Uki, M. Kato, S. Harako, S. Komuro, and X. Zhao*, “Fabrication and AFM Observation of Graphene Fromed by Carbon Deposition”, JJAP Conference Proceedings, Jan. 15, (2013).
2. T. Ohtsuki, S. Harako, S. komuro, and X. Zhao*, “Visible Electroluminescence of a Sm-doped n-TiO/p-NiO/P+-Si Light emitting diode”, Jpn. J. Appl. Phys., 52 (2013) 06GG10-1-3. (Q4, IF 1.384).
3. T. Okamoto, T. Ogita, S. Harako, S. Komuro, X. Zhao*, “Photocatalytic effect of SrZnO thin film”, MRS Online Proceedings Library, 6436, (2013).

2012

M. Ishii*, B. Towlson, N. Poolton, S. Harako, X. Zhao, S. Komuro, B. Hamilton, “Effects of oxidation and deoxidation on charge-propagation dynamics in rare-earth-doped titanium dioxide with room-temperature luminescence”, J. Appl. Phys. 111 (2012) 053514. (Q3, IF 2.068).

2009

F. Jing, S. Harako, S. Komuro, X. Zhao*, “Luminescence properties of Sm3+-doped TiO2 thin films prepared by laser ablation”, J. Phys. D: Appl. Phys. 42 (2009) 085109. (Q3, IF 2.707).

～　2006　

1. R. Watanabe, S. Harako, T. Kuzuu, K. Kouno, T. Kobayashi, T. Meguro and X. Zhao, "Formation and structure analysis of very long ErSi2 nanowires formed on Si(110) substrate", J. J. Appl. Phys., 47, 5015 (2006).
2. Y. Peng, X. Zhao and G. Fu, "21 Century-Oriented Nanoelectronics", Micronanoelectronic Technology, 43, 1-7 (2006).
3. Y. Peng, X. Zhao, "New Progress of the Preparation for Single-Electron Devices", Micronanoelectronic Technology, 42, 202-208 (2005).
4. Y. Peng, G. Fu, X. Zhao, "Semiconductors science and technology, and Nobel physics prizes", Physics, 33, 692-696 (2004).
5. Y. Peng, X. Zhao, G. Fu, "Self-assembled growth of ordered Si-based nanometer luminescent materials", Chinese Journal of Materials Research, 18, 449-460 (2004).
6. Y. Peng, X. Zhao, Y. Wang, L. Ma, "Study and prospect of Si-based optoelectronics”, Chinese Journal of Quantum Electronics", Chinese Journal of Quantum Electronics, Vol. 21, No. 3, pp 273-285 (2004).*
7. Y. Peng, X. Zhao, G. Fu, Y. Wang, "Electronic properties of Si-based nanostructures", Micronanoelectronic Technology, 41, 1-8 (2004).
8. S. Harako, K. Kouno, S. Komuro, A. Ohata, X. Zhao, "Synthesis of very long ErSi₂ nanowires on Si substrates", J. Cryst. Growth, 275, e2263-e2267 (2005).
9. K. Sato, S. Komuro, T. Morikawa, H. Aizawa, T. Katsumata, and X. Zhao, "Long afterglow characteristics of thin film phosphor fabricated by laser ablation", J. Cryst. Growth, 275, e1137-e1141 (2005).
10. X. Zhao, S. Harako, S. Noguchi, and S. Komuro, "Synthesis and optical properties of rare earths doped nano-semiconductors and there applications", Intern. J. of Modern Phys. B, 16, 4294-4301 (2002).
11. S. Komuro, T. Katsumata, H. Kokai, T. Morikawa, and X. Zhao, "Change in photoluminescence from Er-doped TiO₂ thin films induced by optically assisted reduction", Appl. Phys. Lett., 81, 4733-4735 (2002).
12. Y. Peng, X. Zhao and G. Fu, "Progress of Si-based nanocrystalline luminescent materials", Chinese Science Bulletin, 47, 1233-1242 (2002).
13. S. Komuro, T. Katsumata, T. Morikawa, H. Kokai, X. Zhao and Y. Aoyagi, "Formation of b-FeSi₂ thin films using laser ablation", J. Cryst. Growth, 237-239, 1961-1965 (2002).
14. K. Nishiguci, X. Zhao, and S. Oda, "Nanocrystalline silicon electron emitter with a high efficiency enhanced by a planarization technique", J. Appl. Phys., 92, 2748-2757 (2002).
15. X. Zhao and S. Komuro, "Time-resolved photoluminescence of Yb-doped nanocrystalline Si thin films", Appl. Phys. Lett., 79, 2151-2153 (2001).
16. X. Zhao, S. Oda and S. Komuro, "Nanocrystalline Si and its application to new devices", Journal of Korean Physical Society, 39, S462-S466 (2001).
17. K. Nishiguci, X. Zhao, and S. Oda, "Fabrication and characterization of cold electron emitter based on nanocrystalline silicon dots", Proceedings of MRS 2001 Spring Meeting, Pittsburgh, 000-000 (2001).
18. X. Zhao, "TEACHING PHYSICS EXPERIMENT IN A JAPANESE UNIVERSIT, Proceedings of The 2nd Japan-China Symposium on Physics Experiment Education in Universities, Eds. M. Gotoh, Physics Education Society of Japan Publishing, 220-222 (2001).
19. X. Zhao, "Progress on nanocrystalline Si--A new opto-electronic material", "Emerging technologies and new challenges in information society", The Proceedings of 2000 Intern. Conf. On Inform. Soc. in the 21st Century, 348-351 (2000).
20. K. Nishiguchi, X. Zhao, and S. Oda, "Fabrication and characteristics of nanocrystalline silicon electron emitter", "The Physics of Semiconductors", Springer Proceedings in Physics, 87, 1749-1750 (Springer 2000).
21. X. Zhao and S. Komuro, "Optical transition dynamics of Yb-doped nanocrystalline Si thin films", "The Physics of Semiconductors", Springer Proceedings in Physics, 87, 1675-1676 (Springer 2000).
22. X. Zhao, S. Komuro, H. Isshiki, Y. Aoyagi and T. Sugano, "Formation and Device Application of Er-doped Nanocrystalline Si by Using Laser Ablation", Mater. Sci. Eng. B,74, 197-201 (2000).
23. X. Zhao, S. Komuro, H. Isshiki, Y. Aoyagi and T. Sugano, "Fabrication and optical transition dynamics of Er-doped ZnO thin films formed on Si substrates", J. Lumin., 87-89, 1254-1256 (2000).
24. X. Zhao, S. Komuro, H. Isshiki, Y. Aoyagi and T. Sugano, "Photoluminescence and optical transition dynamics of Er³⁺ ions in porous Si", J. Mater. Sci. Tech., 15, 357-362 (1999).
25. S. Komuro, T. Katsumata, T. Morikawa, X. Zhao, H. Isshiki and Y. Aoyagi, "Time response of 1.54 um emission from highly Er-doped nanocrystalline Si thin films prepared by laser ablation", Appl. Phys. Lett., 74, 377-379 (1999).
26. X. Zhao, S. Komuro, H. Isshiki, Y. Aoyagi and T. Sugano, "Fabrication and stimulated emission of Er-doped nanocrystalline Si waveguides formed on Si substrates by laser ablation", Appl. Phys. Lett., 74, 120-122 (1999).
27. X. Zhao, S. Komuro, H. Isshiki, Y. Aoyagi and T. Sugano, "1540nm Stimulated emission from Er-doped nanocrystalline Si waveguides formed on Si substrates", The Physics of Semiconductors, CD Version, Edited by D. Gershoni, World Secientific, File No. 0313 (1998).
28. S. Nomura, T. Iitaka, X. Zhao, T. Sugano, and Y. Aoyagi, "Quantum size effect in model nanocrystalline/amorphous silicon reveled by linear scaling calculations", ICPS'24 Proceedings, "The Physics of Semiconductors", CD Version, Edited by D. Gershoni, World Secientific, File No. 0328 (1998).
29. X. Zhao, S. Komuro, Y. Aoyagi and T. Sugano, "Size dependent absorption spectra of Si nanocrystallites formed in a-Si matrix", ICPS'24 Proceedings, "The Physics of Semiconductors", CD Version, Edited by D. Gershoni, World Secientific, File No. 0312 (1998).
30. X. Zhao, S. Nomura, Y. Aoyagi, and T. Sugano, "Size-dependent blue light emission from silicon nanocrystallites", RIEKN Review, 17, 11-12 (1998).
31. S. Nomura, T. Iitaka, X. Zhao, T. Sugano, and Y. Aoyagi, "Linear scaling calculation for optical spectra of large hydrogenated silicon nanocrystallites", Phys. Rev. B, 56, 4348-4350 (1997).
32. T. Iitaka, S. Nomura, H. Hirayama, X. Zhao, Y. Aoyagi, and T. Sugano, "Calculating the linear response functions of noninteracting electrons with a time-dependent Schrodinger equation", Phys. Rev. E, 56, 1222-1229 (1997).
33. X. Zhao, S. Komuro, S. Fujita, H. Isshiki, Y. Aoyagi and T. Sugano, "Size control of Si nanocrystallites formed in amorphous Si matrix by Er doping", Mater. Sci. Eng. B, 51, 154-157 (1998).
34. T.Iitaka, S. Nomura, H. Hirayama, X. Zhao, Y. Aoyagi and T. Sugano, "Calculating the density of states and linear response functions by the time-dependent Schroedinger equation", Microelectronic Engineering, 43-44, 459-470 (1998).
35. S. Nomura, T. Iitaka, X. Zhao, T. Sugano and Y. Aoyagi, "Electronic structure of nanocrystalline/amorphous silicon: a novel quantum size effect", Materials Science & Engineering B, 51, 146-149 (1998).
36. X. Zhao and Y. Itoh, "Positron/Positronium Annihilation in Nanocrystalline Si", RIKEN Accelerator Progress Report, 30, 161 (1997).
37. S. Nomura, Y. Segawa, K. Misawa, T. Kobayashi, X. Zhao, Y. Aoyagi and T. Sugano, "Optical properties of semiconductor quantum dots in magnetic fields", J. Lumine. 70, 144-157 (1996).
38. S. Nomura, X. Zhao, Y. Aoyagi and T. Sugano, "Electronic structure of amodel nanocrystalline/amorphous mixed-phase silicon", Phys. Rev. B, 54, 13974-13979 (1996).
39. S. Komuro, S. Maruyama, T. Morikawa, X. Zhao, H. Isshiki, and Y. Aoyagi "Room-temperature luminescence from erbium-doped silicon thin films prepared by laser ablation", Appl. Phys. Lett. 69, 3896-3898 (1996).
40. S. Nomura, X. Zhao, Y. Aoyagi and T. Sugano, "A novel quantum size effect: Electronic states of nanocrystalline silicon embeded in amorphous silicon", ICPS'23 Proceedings, "The Physics of Semiconductors", Edited by M. Scheffler and R. Zimmermann, World Secientific, pp1653-1656 (1996).
41. X. Zhao, S. Komuro, H. Isshiki, S. Maruyama, Y. Aoyagi and T. Sugano, "Photoluminescence and probe effect of Er-doped nanometer-sized Si materials", Appl. Sur. Sci., 113/114, 121-125 (1997).
42. X. Zhao, Y. Itoh, Y. Aoyagi, T. Sugano, K. Hirata, Y. Kobayashi, T. Ohdaira, R. Suzuki and T. Mikado, "Positron/positronium annihilation in nanocrystalline silicon thin films", J. Radioanal. Nucl. Chem., Art., 211, 31-38 (1996).
43. X. Zhao, S. Komuro, H. Isshiki, Y. Aoyagi and T. Sugano, "To probe the absorption edge of porous silicon by erbium", "Rare Earth Doped Semiconductors II", Edited by S. Coffa, A. Polman and R. N. Schwartz, MRS Symp. Proc. 422, 143-148 (Pittsburgh, 1996).
44. X. Zhao, S. Nomura, Y. Aoyagi and T. Sugano, "Formation and electronicstates of Si nanocrystallites in amorphous Si", J. Noncrystal Solids, 198-200, 847-852 (1996).
45. X. Zhao, O. Schoenfeld, S. Nomura, S. Komuro, Y. Aoyagi and T. Sugano, "Nanocrystalline Si: A material constructed by Si quantum dots", Mater. Sci. Eng. B 35, 467-471 (1995).
46. O. Schoenfeld, X. Zhao, T. Hempel, Y. Aoyagi, and T. Sogano: "Structures and electrical transport in microcrystalline composite Si-NiSi₂ this films", J. Phys. Chem. Solids, 56, 123-128 (1995).
47. X. Zhao, O. Schoenfeld, S. Nomura, J. Kusano, S. Komuro, Y. Aoyagi and T. Sogano: "Blue light emitting silicon nanocrystallites ", ICPS'22 Proceedings, "The Physics of Semiconductors", Edited by David J. Lockwood, World Secientific, 2035-2038 (1995).
48. S. Nomura, X. Zhao, O. Schoenfeld, K. Misawa, T. Kobayashi, Y. Segawa, Y. Aoyagi and T. Sogano, "Magnetic Field Effect in Direct- and Indirect-Gap Semiconductors Quantum Dots", Jan. J. Appl. Phys., 34, 125-127 (1995).
49. O. Schoenfeld, X. Zhao, T. Hempel, and Y. Aoyagi: "Optical absorption of microcrystalline Si-Ni thin films", J. Appl. Phys., 78, 1987-1991 (1995).
50. O. Schoenfeld, X. Zhao, T. Hempel, and Y. Aoyagi: "Crystallization of amorphous silicon by NiSi precipitates", Solid Thin Films, 261, 236-240 (1995).