1987－1996：武汉大学物理系助教、讲师；

1989年：意大利国际理论物理中心短期进修；

主要学术兼职：

中国真空学会理事，工信部半导体照明标准工作组成员，中国核物理学会常务理事，湖北省核学会常务理事，湖北省物理学会理事长，湖北省有突出贡献优秀中青年专家，湖北省光电子产业优秀人才。国家自然科学奖评委，拔尖人才、工信部电子产业发展基金、973等评审及验收专家，曾任IEEE International Symposium on Photonics and Optoelectronics (SOPO) 国际会议主席（2010-2012）,中韩双边基金委联合资助的信息功能薄膜材料会议中方主席（2010-2011）,中韩双边基金委联合资助的低维电子和光子材料与器件会议中方主席（2012-2013）；现任Current Applied Physics杂志Topical Editor（半导体器件物理），Lead Guest Editor of Nanoscale Research Letters以及多个国际学术杂志论文审稿人。

1． 宽禁带半导体材料和器件的外延生长及器件加工。

2． 纳米材料和器件研制及其应用研究。

3． 离子束材料改性。

4． 离子注入与离子束分析。

5． 离子束辅助沉积制备功能薄膜材料。

主持科研项目：

1. 国家自然科学基金委国际会议资助项目：第二届中韩低维电子和光子材料与器件，2013；

2. 国家自然科学基金委国际会议资助项目：第一届中韩低维电子和光子材料与器件，2012；

3. 国家自然科学基金“离子注入制备InN基n-沟道铁电场效应晶体管”，批准号：11175135，2012-2015；

4. 国家科技部国际合作重点项目：用于XXX的环境友好技术，2011-2013；

5. 国家自然科学基金“基于纳米结构的金属-绝缘体-金属超大容量电容器”，批准号：11074192，2011-2013；

6. 国家自然科学基金委国际会议资助项目：第五届中韩先进信息功能薄膜研讨会，2010；

7. 湖北省自然科学基金“分子束外延制备AlGaN/AlN/GaN高电子迁移率晶体管”，批准号：2009，2009-2010；

8. 国家自然科学基金“离子注入GaN绝缘衬底上外延生长AlGaN/AlN/GaN高电子迁移率晶体管”，批准号：10775110，2008-2010；

9. 参加国家973项目“纳米尺度亚光波长结构的制备、光学性质与器件研究”的子课题—“金属基亚光波长纳米结构的奇异光电性质研究”，批准号：2007CB935304，2007-2010；

10. 宽禁带半导体和铁电体材料异质结构研究，中国科学院上海微系统与信息技术研究所开放基金， 2008-2009；

11. 武汉市科技计划项目“GaN大功率蓝紫色发光二极管外延片研制与应用”，批准号：200710321077，2007-2009；

12. 教育部博士点基金“离子束诱发的宽禁带半导体材料非晶化研究”，批准号：20060486047，2007-2009年；

13. 湖北省“十一五”重大科技攻关招标项目“大功率蓝光外延芯片研制”，批准号：2006AA103A01， 2006-2008；

14. 湖北省“十一五”重大科技攻关招标项目“超高亮度绿光外延芯片研制”，批准号：2006AA103A02，2006-2008；

15. 湖北省“十一五”重大科技攻关招标项目“带有静电保护电路的硅片上倒装焊GaN功率芯片的设计、加工和规模化生产”， 批准号：2006AA103A03，2006-2008；

16. 湖北省光电子产业优秀创新人才资助项目“GaN光电器件研制”，湖北省科技厅2006-2007；

17. 武汉市发展与改革委员会“高效节能环保型半导体白光源产业化前期关键技术研发”，2006-2008；

18. 国家自然科学基金“离子注入宽禁带半导体（GaN和ZnO）非晶化研究”，批准号：10475063，2005-2007；

19. 教育部新世纪人才基金” 宽禁带半导体材料和器件的外延生长及离子注入改性研究”，批准号：NCET-04-0671，2005-2007；

20. 湖北省科技攻关重点项目“GaN发光芯片应用研究”，批准号：2004AA101A06，2004-2007；

21. 湖北省自然科学基金“离子注入GaN局部非晶化研究”，批准号：2004ABA079，2005-2006；

22. 教育部留学回国人员基金“稀土离子掺杂GaN制备白光芯片的理论和实验研究”，批准号： 教外司留[2004]527，2005-2006；

23. 国家自然科学基金委主任基金“稀土离子注入GaN制备白光芯片”，批准号：10345006，2004。

他引270多次，单篇（第一作者他引超过50次）；10次国际会议报告（含邀请报告和大会报告）。

1. T. Wang, H. Wu, H. Zheng, J. B. Wang, Z. Wang, C. Chen, Y. Xu, and C. Liu*, Nonpolar light emitting diodes of m-plane ZnO on c-plane GaN with the Al2O3 interlayer, Appl. Phys. Lett. 102, 141912 (2013).

2. Ying Lin, Xing Qiang Liu, Ti Wang, Chao Chen, Hao Wu, Lei Liao and Chang Liu*, Shape-dependent localized surface plasmon enhanced UV-emission from ZnO grown by atomic layer deposition, Nanotechnol. 24, 125705 (Mar. 7, 2013) (5pp)。

3. T. Wang, Hao Wu, Z. Wang, C. Chen, and C. Liu*, Blue light emission from the heterostructured ZnO/InGaN/GaN, Nanoscale Research Lett. 8, 99 (2013).

4. Zhi Wei Ai, Yun Wu, Hao Wu, Ti Wang, Chao Chen, Yang Xu and Chang Liu*, Enhanced band-edge photoluminescence from ZnO-passivated ZnO nanoflowers by atomic layer deposition, Nanoscale Research Lett. 8, 105 (2013).

5. T. Wang, H. Wu, Z. Wang, C. Chen, and C. Liu*, Improvement of optical performance of ZnO/GaN p-n junctions with an InGaN interlayer, Appl. Phys. Lett. 101, 161905 (2012).

6. T. Wang, Hao Wu, Z. Wang, C. Chen, and C. Liu*, Ultralow Emission Threshold Light-Emitting Diode of Nanocrystalline ZnO/p-GaN Heterojunction，IEEE Elect. Device Lett., 33, 1030 (2012).

7. Z. An, F. Q. Liu, Y. Lin, and C. Liu*, The universal definition of spin current, Sci. Rep. 2, 388 (2012).

8. T. Wang, H. Wu, C. Chen, and C. Liu*，Growth, optical, and electrical properties of nonpolar m-plane ZnO on p-Si substrates with Al2O3 buffer layers, Appl. Phys. Lett. 100, 011901 (2012).

9. Yang Pan, Zheng Wang, Ting Peng, Kemin Wu, Hao Wu, C. Liu*, Improvement of structural and electrical properties of Cu2O films with InN epilayers, J. Cryst. Growth, 334， 46 (2011).

10. Z. P. Zhou, S. J. Luo, Y. Wang, Z. W Ai, C. Liu*, D. F. Wang, Y.P. Lee, Room temperature ferromagnetism and hopping transport in amorphous CrN thin films, Thin Solid Films, 519，1989 (2011).

11. K. M. Wu, T. Han, K. Shen, B. Liu, T. Peng, Y. Pan, H. D. Sun, and C. Liu*, Growth of vertically aligned InGaN nanorod arrays on p-Type Si substrates for heterojunction diodes, J. Nanosci. Nanotechnol. 10 , 8139 (2010).

12. Y. Pan, T. Wang, K. Shen, T. Peng, K. M. Wu, W. Y. Zhang, C. Liu*, Rapid growth and characterization of InN nanocolumns on InGaN buffer layers at a low ratio of N/In, J. Cryst. Growth 313, 16 (2010).

13. T. Peng, K. Shen, H. Wu, C. Hu, and C Liu*, Room-temperature ferromagnetism and electrical properties of Cu2O/GaN heterostructures, J. Phys. D: Appl. Phys. 43, 315101 ( 2010).

14. Q. M. Fu, T. Peng, Y. Pan and C. Liu*, Effects of AlN/GaN superlattices on structural properties of Al0.45Ga0.55N grown on AlN/sapphire templates, J. Kor. Phys. Soc., 55, 2659 (2009).

15. H. Wu, J. Yuan, T. Peng, Y. Pan, T. Han, K. Shen, B. R. Zhao, C. Liu*, Control of the epitaxial orientation and reduction of the interface leakage current in YMnO3/GaN heterostructure, J. Phys. D - Appl. Phys. 18, 185302 (2009).

16. Yuan, Longyan, Fang, Guojia, Zhou, Hai, Gao, Yihua, Liu, Chang, Zhao, Xingzhong，Suppression of near-edge optical absorption band in sputter deposited hafnium oxynitride via nitrogen incorporation and annealing，J. Phys. D – Appl. Phys., 42, 145302 (2009).

17. Q. M. Fu, T. Peng, C. Liu*, Effects of real-time monitored growth interrupt on crystalline quality of AlN epilayer grown on sapphire by molecular beam epitaxy, J. Cryst. Growth, 311, 3553 (2009).

18. B. Liu, J. Gao, K. M. Wu and C. Liu*，Preparation and rapid thermal annealing of AlN thin films grown by molecular beam epitaxy, Solid State Commun. 149, 715 (2009).

19. Y. Tian, H. B. Lu, L. Liao, J. C. Li, C. Liu, Synthesis and evolution of hollow ZnO microspheres assisted by Zn powder precursor, Solid State Commun. 149, 456 (2009).

20. H. Wu, J. Yuan, T. Peng, Y. Pan, T. Han, and C. Liu*, Temperature- and field-dependent leakage current of epitaxial YMnO3/GaN heterostructure，Appl. Phys. Lett. 94, 122904 (2009).

21. D. F. Wang, S. Y. Park, Y. S. Lee, T. W. Eom, S. J. Lee,Y. P. Lee, Ch. J. Choi, J. C. Li, and C. Liu, Epitaxial ZnMnO/ZnO Coaxial Nanocable, Crystal Growth & Design 9, 2124 (2009).

22. K. M. Wu, Y. Pan, and C. Liu*, InGaN nanorod arrays grown by molecular beam epitaxy: growth mechanism, structural and optical properties, Appl. Surf. Sci. 255, 6705 (2009).

23. Q. M. Fu, T. Peng, F. Mei, Y. Pan, L. Liao and C. Liu*，Relaxation of compressive strain by inclined threading dislocations in Al0.45Ga0.55N grown on AlN/sapphire templates using graded-AlxGa1-xN/AlN superlattices，J. Phys. D - Appl. Phys. 42, 035311 (2009).

24. H. Li, J. P. Sang, C. Liu, H. B. Lu, J. C. Cao, Microstructural study of MBE-grown ZnO film on GaN/sapphire (0001) substrate, Central European J Phys. 6, 638 (2008).

25. F. Mei, K. M. Wu, Y. Pan, T. Han, and C. Liu*, J. W. Gerlach, and B. Rauschenbach, Structural and optical properties of Cr-doped semi-insulating GaN epilayers, Appl. Phys. Lett. 93, 113507 (2008).

26. L. Liao, Z. Zheng, B. Yan, J. X. Zhang, H. Gong, J. C. Li, C. Liu, Z. X. Shen, and T. Yu, Morphology controllable synthesis of alpha-Fe2O3 1D nanostructures: Growth mechanism and nanodevice based on single nanowire, J. Phys. Chem. C 112, 10784 (2008).

27. L. Liao, H. X. Mai, Q. Yuan, H. B. Lu, J. C. Li, C. Liu, C. H. Yan, Z. X. Shen, T. Yu, Ting, Single CeO2 nanowire gas sensor supported with Pt nanocrystals: Gas sensitivity, surface bond states and chemical mechanism, J. Phys. Chem. C 112, 9061 (2008). Highlighted by Nature Asia Materials 06 August 2008.

28. F. Mei, Q. M. Fu, T. Peng, C. Liu*, M. Z. Peng and J. M. Zhou, Growth and characterization of AlGaN/GaN heterostructures on semi-insulating GaN epilayers by molecular beam epitaxy, J. Appl. Phys. 103, 094502 (2008)

29. F. Ren, G. X. Cai, X. H. Xiao, L. X. Fan, C. Liu, D. J. Fu, J. B. Wang, and C. Z. Jiang, Ion irradiation induced hollow and sandwiched nanoparticles, J Appl. Phys. 103, 084308 (2008).

30. L. Liao, H. B. Lu, M. Shuai, J. C. Li, Y. L. Liu, C. Liu, Z. X. Shen, and T Yu, A novel gas sensor based on field ionization from ZnO nanowires: moderate working voltage and high stability, Nanotechnol. 19, 175501 (2008).

31. D. F. Wang, S. Y. Park, Y. S. Lee, Y. P. Lee, J. C. Li, and C. Liu，Synthesis and room-temperature ferromagnetism of Zn0.96Mn0.04O/ZnO coaxial nanocable and Zn0.96Mn0.04O film，J. Appl. Phys. 103, 07D126 (2008).

32. B. Liu, Q. M. Fu, K. M. Wu, C. Liu*, Studies of the growth method and properties of AlN grown by RF-MBE, J. Kor. Phys. Soc. 52，S17 (2008).

33. L. Zhang, F. Q. Liu, and C. Liu*, Simulations of voltage-controlled yellow or orange emmision from GaN codoed with Eu and Er, J. Kor. Phys. Soc. 52，S67 (2008).

34. J. Gao, B. Liu, Y. Pan, T. Peng, K. M. Wu, C. Liu*, Effect of rapid thermal annealing on the properties of InN epilayers, J. Kor. Phys. Soc. 52，S128 (2008).

35. T. Peng, Q. M. Fu and C. Liu*, Deposition of ZnO thin films on GaN substrates, J. Kor. Phys. Soc. 52，S100 (2008).

36. X. H. Xiao, J. X. Xu, F. Ren, C. Liu, C. Z. Jiang, Fabrication of Ag nanoclusters in single-crystal MgO by high-energy ion implantation, Physica E 40, 705 (2008).

37. L. Han, F. Mei, C. Liu*, C. Pedro and E. Alves, Comparison of ZnO thin films grown by pulsed laser deposition on sapphire and Si substrates, Physica E 40, 699 (2008).

38. L. Liao, H. B. Lu, L. Zhang, M. Shuai, J. C. Li, C. Liu, D. J. Fu, and F. Ren，Effect of ferromagnetic properties in Al-doped Zn1-xCoxO nanowires synthesized by water-assistance reactive vapor deposition, J. Appl. Phys. 102, 114307 (2007).

39. X. H. Xiao, L. P. Guo, F. Ren, J. B. Wang, D. J. Fu, D. L. Chen, Z. Y. Wu, Q. J. Jia, C. Liu, C. Z. Jiang, Formation of metal nanoparticles in silica by the sequential implantation of Ag and Cu, Appl. Phys. A 89, 681 (2007).

40. L. Liao, H. B. Lu, J. C. Li, C. Liu, D. J. Fu, and Y. L. Liu, The sensitivity of gas sensor based on single ZnO nanowire modulated by helium ion radiation, Appl. Phys. Lett., 91, 173110 (2007), selected for the November 5, 2007 issue of Virtual Journal of Nanoscale Science & Technology.

41. L. Zhang, F. Q. Liu, and C. Liu*, Voltage-controlled variable light emissions from GaN codoped with Eu, Er, and Tm, Appl. Phys. Lett. 91, 143514 (2007).

42. X. H. Xiao, F. Ren, J. B. Wang, C. Liu, C. Z. Jiang, Formation of aligned silver nanoparticles by ion implantation, Mater. Lett. 61, 4435 (2007).

43. X. H. Xiao, J. Zhu, Y. R. Li, W. B. Luo, B. F. Yu, L. X. Fan, F. Ren, C. Liu, and C Z Jiang, Greatly reduced leakage current in BiFeO3 thin film by oxygen ion implantation, J. Phys. D - Appl. Phys. 40, 5775 (2007).

44. L. Liao, K. H. Liu, W. L. Wang, X. D. Bai, E. G. Wang, Y. L. Liu, J. C. Li, and C. Liu, Multiwall Boron Carbonitride/Carbon Nanotube Junction and Its Rectification Behavior, J. Am. Chem. Soc. 129, 9562 (2007).

45. H. Li, J. P. Sang, F. Mei, F. Ren, L. Zhang, C. Liu, Observation of ferromagnetism at room temperature for Cr+ ions implanted ZnO thin films. Appl. Surf. Sci. 253, 8524 (2007).

46. L. Zhang, F. Q. Liu, C. Liu*, The influence of external electromagnetic field on an exciton spin current, J. Phys. Condens. Matter 19, 346222 (2007).

47. L. Zhang, H. C. Jiang, C. Liu*, J. W. Dong, P. Chow, Annealing of Al2O3 thin films prepared by atomic layer deposition, J. Phys. D - Appl. Phys. 40, 3707 (2007).

48. L. Liao, W. F. Zhang, H. B. Lu, J. C. Li, D. F. Wang, C. Liu, D. J. Fu, Investigation of the temperature dependence of the field emission of ZnO nanorods, Nanotechnol. 18, 225703 (2007).

49. L. Liao, Z. Xu, K. H. Liu, W. L. Wang, S. Liu, X. D. Bai, E. G. Wang, J. C. Li and C. Liu, Large-scale aligned silicon carbonitride nanotube arrays: Synthesis, characterization, and field emission property, J. Appl. Phys. 101, 114306 (2007), selected for the June 18, 2007 issue of Virtual Journal of Nanoscale Science & Technology.

50. L. Liao, J. C. Li, C. Liu, Z. Xu, W. L. Wang, S. Liu, X. D. Bai, E. G. Wang, Field emission of GaN-filled carbon nanotubes: High and stable emission current, J. Nanosci. Nanotechnol. 7, 1080 (2007).

51. L. Liao, H. B. Lu, J. C. Li, H. He, D. F. Wang, D. J. Fu, C. Liu, W. F. Zhang, Size dependence of gas sensitivity of ZnO nanorods, J. Phys. Chem C 111, 1900 (2007).

52. F. Ren, C. Z. Jiang, C. Liu, J. B. Wang, T. Oku, Controlling the morphology of Ag nanoclusters by ion implantation to different doses and subsequent annealing, Phys. Rev. Lett. 97, 165501 (2006).

53. F. Mei, C. Liu*, L. Zhang, F. Ren, L. Zhou, W. K. Zhao, Y. L. Fang, Microstructural study of binary TiO2:SiO2 nanocrystalline thin film, J. Cryst. Growth 292, 87 (2006).

54. X. Z. Shang, S. D. Wu, C. Liu, W. X. Wang, L.W. Guo,Q. Huang and J. M. Zhou, Low temperature step-graded InAlAs/GaAs metamorphic buffer grown by molecular beam epitaxy, J. Phys. D: Appl. Phys. 39, 1800 (2006).

55. F. Mei, C. Liu*, L. Zhou, W. K. Zhao, Y. L. Fang, J. B. Wang, and Y. Y. Ren, Effect of annealing temperature on binary TiO2:SiO2 nanocrystalline thin films, J. Kor. Phys. Soc. 48, 1509 (2006).

56. F. Ren, C. Z. Jiang, C. Liu, J. B. Wang, Fabrication and annihilation of nanovoids in Cu nanoclusters by ion implantation into silica and subsequent annealing, Appl. Phys. Lett. 88, 183114 (2006).

57. L. Chen, Z. Q. Chen, X. Z. Shang, C. Liu*, S. Xu, Q. Fu, Effect of annealing temperature on density of ZnO quantum dots, Solid State Commun. 137, 561 (2006).

58. L. Liao, J. C. Li, D. F. Wang, C. Liu, M. Z. Peng, J. M. Zhou, Size dependence of Curie temperature in Co+ ion implanted ZnO nanowires, Nanotechnol. 17, 830 (2006).

59. L. Liao, J. C. Li, D. F. Wang , C. Liu, C. S. Liu, Q. Fu, Electron field emission studies on ZnO nanowires, Mater. Lett. 59, 2465 (2005).

60. F. Ren, C. Z. Jiang, C. Liu, D. J. Fu, Y. Shi, Interface influence on the surface plasmon resonance of Ag nanocluster composite, Solid State Commun. 135, 268 (2005).

61. L. Liao, J. C. Li, D. F. Wang , C. Liu, C. S. Liu, Q. Fu, L. X. Fan, Field emission property improvement of ZnO nanowires coated with amorphous carbon and carbon nitride films, Nanotechnol. 16, 985 (2005).

62. C. Liu, Q. Fu, J.B. Wang, W.K. Zhao, Y.L. Fang, T. Mihara, M. Kiuchi, Structural characterization of nanocrystalline TiO2:SiO2 powders and thin film at 35 °C, J. Kor. Phys. Soc. 46, S104 (2005).

63. L. Liao, J. C. Li, D. H. Liu, C. Liu, D. F. Wang , W. Z .Song, Q. Fu, Self-assembly of aligned ZnO nanoscrews: Synthesis, growth, configuration and field emission, Appl. Phys. Lett. 86, 083106 (2005) (Cover image).

64. L. Liao, D. H. Liu, J. C. Li, C. Liu, Q. Fu, M. S. Ye, Synthesis and Raman analysis of 1D-ZnO nanostructure via vapor phase growth, Appl. Surf. Sci. 240, 175 (2005).

65. F. Ren, C. Z. Jiang, H. B. Chen, Y. Shi, C. Liu, J. B. Wang, Metal alloy and monoelemental nanoclusters in silica formed by sequential ion implantation and annealing in selected atmosphere, Physica B-CONDENSED MATTER 353, 92 (2004).

66. T. Asanuma, T. Matsutani, C. Liu, T. Mihara, and M. Kiuchi, Structural and optical properties of titanium dioxide films deposited by reactive magnetron sputtering in pure oxygen plasma, J. Appl. Phys. 95, 6011 (2004).

67. T. Matsutani, T. Asanuma , C. Liu, M. Kiuchi , and T. Takeuchi Deposition of SiO2 films by low-energy ion-beam induced chemical vapor deposition using hexamethyldisiloxane, Surf. Coat. Technol. 177-178, 365 (2004).

68. T. Matsutani, T. Asanuma, C. Liu, M. Kiuchi and T. Takeuchi, Ion-assisted chemical vapor deposition of Si-C film with organosilicon precursor, Surf. Coat. Technol. 169-170, 624 (2003).

69. C. Liu, T. Matsutani, T. Asanuma, and M. Kiuchi, Preparation and characterization of indium tin oxide films formed by oxygen ion beam assisted deposition, Solid State Commun. 126, 509 (2003).

70. W. K. Zhao, L. Zhou, C. Liu, L. Hu, Y. Fang, and M. Kiuchi, Photocatalytic activity of TiO2 prepared by liquid phase deposition, Acta Chim. Sinica 61, 699 (2003).

71. C. Liu, T. Matsutani, T. Asanuma, and M. Kiuchi, Structural, electrical and optical properties of indium tin oxide films prepared by low-energy oxygen-ion-beam assisted deposition, Nucl. Instr. Meth. B, 206, 348 (2003).

72. T. Matsutani, T. Asanuma, C. Liu, M. Kiuchi, and T. Takeuchi, Comparison of surface morphologies of SiO2 films prepared by ion-beam induced chemical vapor deposition and ion-beam assisted deposition, Nucl. Instr. Meth. B, 206, 343 (2003).

73. L. Zhou, C. Liu, W. Zhao, L. Hu, Y. Fang, Photocatalytic activity of Fe3+-doped TiO2 thin films prepared via liquid phase deposition, Chinese J. Catal. 24, 359 (2003).

74. C. Liu, T. Matsutani, T. Asaluma, K. Murai, M. Kiuchi, E. Alves, and M. Reis, Room-temperature growth of crystalline indium tin oxide films on glass using low energy oxygen ion beam assisted deposition, J. Appl. Phys. 93, 2262 (2003).

75. C. Liu, T. Matsutani, N. Yamamoto, and M. Kiuchi, High-quality indium tin oxide films prepared at roome temperature by oxygen ion beam assisted deposition, Europhys. Lett. 59, 606 (2002).

76. C. Liu, E. Alves, A. R. Ramos, M. F. da Silva, J. C. Soares, T. Matsutani, and M. Kiuchi, Annealing behavior and lattice location of Mn+ implanted GaN, Nucl. Instr. Meth. B, 191, 544 (2002).

77. E. Alves, C. Liu, E. B. Lopes, M. F. da Silva, J. C. Soares, J. Soares, C. Boemare, M. J. Soares, and T. Monteiro, Study of calcium ion implanted GaN, Nucl. Instr. Meth. B 190, 625 (2002).

78. T. Monteiro, C. Boemare, M. J. Soares, E. Alves, and C. Liu, Green and red emission in Ca implanted GaN samples, Physica B 308-310, 42 (2001).

79. C. Liu, A. Wenzel, B. Rauschenbach, E. Alves, A. D. Sequeira, N. Franco, M. F. da Silva, J. C. Soares, and X. J. Fan, Amorphization of GaN by ion implantation, Nucl. Instr. Meth. B 178, 200 (2001).

80. E. Alves, C. Liu, J. C. Waerenborgh, M. F. da Silva, and J. C. Soares, Study of Fe ion implanted GaN, Nucl. Instr. Meth. B, 175-177, 241 (2001).

81. C. Liu, E. Alves, A. Sequera, N. Franco, M. F. da Silva, and J. C. Soares, Fe ion implantation in GaN: damage, annealing, and lattice site location, J. Appl. Phys. 90, 81 (2001).

82. C. Liu, A. Wenzel, J. W. Gerlach, X. J. Fan, and B. Rauschenbach, Annealing study of ion implanted GaN, Surf. Coat. Technol. 128-129, 455 (2000).

83. C. Liu, Structural Characterization of Ion Implanted Gallium Nitride, Shaker, Aachen, 2000 (ISBN:3-8265-7107-X).

84. C. Liu, M. Schreck, A. Wenzel, B. Mensching, and B. Rauschenbach, Damage buildup and removal in Ca-ion implanted GaN, Appl. Phys. A 70, 53 (2000).

85. A. Wenzel, C. Liu, and B. Rauschenbach, Effect of implantation-parameters on the structural properties of Mg-ion implanted GaN, Mater. Sci. & Eng. B 59, 191 (1999).

86. C. Liu, A. Wenzel, K. Volz, and B. Rauschenbach, Influence of substrate temperature on damage buildup and removal of ion implanted gallium nitride, Nucl. Instr. Meth. B 148, 396 (1999).

87. W. Limmer, W. Ritter, R. Sauer, B. Mensching, C. Liu, and B. Rauschenbach, Raman scattering in ion-implanted GaN, Appl. Phys. Lett. 72, 2589 (1998).

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