第5期 张玉军等:声表面波器件金刚石薄膜基片的制备工艺 .547 化,有的样品炸裂 [3]Zhang JZ.Processing Techniques of Polished Single-Crystal Sil- 实验在对衬底表面状态、金刚石膜形核密度、生 icon Wafers.Beijing:Chemical Industry Press,2005:94 (张厥宗,硅单晶抛光片的加工技术,北京:化学工业出版社, 长过程的稳定性(温度稳定性和过程稳定性)以及沉 2005:94) 积结束后系统缓慢降温等所有环节进行严格系统控 [4]Chang K P.Cheng W J.Jiang JC.et al.Selective deposition of 制后在单晶硅衬底上生长出了大面积、高质量的金 diamond films on Si(100)substrate.J Synth Cryst,2003,32 刚石薄膜13],如图5所示 (6):610 薄膜的直径为50.8mm,单晶硅衬底的厚度为 (常开朋,程文娟,江锦春,等.金刚石膜在Si(100)衬底上的选 择沉积.人工晶体学报,2003,32(6):610) 5mm,金刚石薄膜的厚度约为25m: [5]Lu F X.Tang WZ.Zhong G F.Economical deposition of a large area of high quality diamond film by a high power DC are plasma jet operating in a gas recycling mode.Diamond Relat Mater. 2000(9):1655 [6]Wang Q.Institution of Synthesis Techniques,Texture and Ad- hesion of CVD Diamond Coatings on Cemented Carbide Tools [Dissertation].Beijing:University and Science Technology Bei- jing,2001,52 (王强.硬质合金工具CVD金刚石涂层的制备技术、涂层组织 及结合力研究[学位论文],北京:北京科技大学,2001:52) [7]Li X.Chen D Z.Zhang Y.An improvement on the quality of 图5硅衬底上大面积、高质量的金刚石薄膜 CVD diamond films on WCCo(YG6)substrate.Geoscience Fig.5 Large"area high-quality diamond films on silicon substrate 1998,12(2):289 (李询,陈代璋,张岩,提高WC℃。合金基底沉积金刚石膜质 4结论 量的研究.现代地质,1998,12(2):289) (1)在相同的衬底温度下,甲烷浓度对金刚石薄 [8]Huang YS.Qiu W Q.Liu Z Y.Studies of nucleation of diamond 膜的晶粒尺寸起着决定性的作用,在本实验中甲烷 films grown by chemical vapor deposition.Vac Sci Technol. 2001,21(6):492 气体体积分数为1.8%时,晶粒最为细小,同时金刚 (黄元盛,邱万奇,刘正义·CVD金刚石形核的研究,真空科学 石薄膜的表面粗糙度最小,表面最为光滑 与技术,2001,21(6):492) (2)在其他条件等同的情况下,衬底温度对金刚 [9]Huang Y S.Liu Z Y.Qiu W Q.Study on second nucleation 石薄膜的晶粒尺寸也有很大影响,在一定范围内, mechanism of CVD diamond films.Mater Sci Eng.2001,21 温度相对较低的衬底所生长的金刚石薄膜的晶粒尺 (1):50 (黄元盛,刘正义,邱万奇.CVD金刚石薄膜二次形核机制的 寸较小 研究.材料科学与工程,2001,21(1):50) (③)在单品硅衬底上生长大面积、高质量的金刚 [10]Kim W K.Whang K W.Deposition of diamond film by a mag 石薄膜必须对衬底表面状态、金刚石膜形核密度、生 netized DC plasma jet.Mater Manuf Process.1993.8(1):83 长过程的稳定性(温度稳定性和过程稳定性)以及沉 [11]Zhong G F.Shen FZ.Tang WZ.et al.Effects of surface tem- 积结束后系统缓慢降温等所有环节进行严格系统控 perature on diamond films prepared by DC are plasma jet CVD 制才能实现 method.JUniv Sci Technol Beijing.1999.21(4):353 (钟国仿,申发振,唐伟忠,等·基片温度对直流电弧等离子体 参考文献 喷射沉积金刚石膜的影响.北京科技大学学报,1999,21(4): 353) [1]Zhu W.Stoner B R.Williams B E.et al.Growth and characteri- [12]Wada N.Solin S A.Raman efficiency measurements of zation of diamond films on non-diamond substrates for electronic graphite.Phys B.1981.105:353 applications//Proceedings of the 30th IEEE Conference on Deci- [13]HuangT B.Liu J M.Zhong G F.et al.Preparation of large are sion and Control.Brighton,1991:621 free standing thick diamond wafers.J Univ Sci Technol Bei- [2]Chen JJ.Li D M.Pan F.Latest progress of surface acoustic de- jing,2000,22(3):234 vices made of diamond film.Vac Sci Technol,2003,23(6):417 (黄天斌,刘敬明,钟国仿,等,大面积无衬底自支撑金刚石厚 (陈菁菁,李冬梅,潘峰.金刚石声表面波器件的研究与进展· 膜沉积,北京科技大学学报,2000,22(3):234) 真空科学与技术,2003,23(6):417)化有的样品炸裂. 实验在对衬底表面状态、金刚石膜形核密度、生 长过程的稳定性(温度稳定性和过程稳定性)以及沉 积结束后系统缓慢降温等所有环节进行严格系统控 制后在单晶硅衬底上生长出了大面积、高质量的金 刚石薄膜[13]如图5所示. 薄膜的直径为50∙8mm单晶硅衬底的厚度为 5mm金刚石薄膜的厚度约为25μm. 图5 硅衬底上大面积、高质量的金刚石薄膜 Fig.5 Large-area high-quality diamond films on silicon substrate 4 结论 (1)在相同的衬底温度下甲烷浓度对金刚石薄 膜的晶粒尺寸起着决定性的作用.在本实验中甲烷 气体体积分数为1∙8%时晶粒最为细小同时金刚 石薄膜的表面粗糙度最小表面最为光滑. (2)在其他条件等同的情况下衬底温度对金刚 石薄膜的晶粒尺寸也有很大影响.在一定范围内 温度相对较低的衬底所生长的金刚石薄膜的晶粒尺 寸较小. (3)在单晶硅衬底上生长大面积、高质量的金刚 石薄膜必须对衬底表面状态、金刚石膜形核密度、生 长过程的稳定性(温度稳定性和过程稳定性)以及沉 积结束后系统缓慢降温等所有环节进行严格系统控 制才能实现. 参 考 文 献 [1] Zhu WStoner B RWilliams B Eet al.Growth and characterization of diamond films on non-diamond substrates for electronic applications∥ Proceedings of the30th IEEE Conference on Decision and Control.Brighton1991:621 [2] Chen J JLi D MPan F.Latest progress of surface acoustic devices made of diamond film.V ac Sci Technol200323(6):417 (陈菁菁李冬梅潘峰.金刚石声表面波器件的研究与进展. 真空科学与技术200323(6):417) [3] Zhang J Z.Processing Techniques of Polished Single-Crystal Silicon Wafers.Beijing:Chemical Industry Press2005:94 (张厥宗.硅单晶抛光片的加工技术.北京:化学工业出版社 2005:94) [4] Chang K PCheng W JJiang J Cet al.Selective deposition of diamond films on Si(100) substrate.J Synth Cryst200332 (6):610 (常开朋程文娟江锦春等.金刚石膜在 Si(100)衬底上的选 择沉积.人工晶体学报200332(6):610) [5] Lu F XTang W ZZhong G F.Economical deposition of a large area of high quality diamond film by a high power DC arc plasma jet operating in a gas recycling mode. Diamond Relat Mater 2000(9):1655 [6] Wang Q.Institution of Synthesis TechniquesTexture and A dhesion of CV D Diamond Coatings on Cemented Carbide Tools [Dissertation ].Beijing:University and Science Technology Beijing2001:52 (王强.硬质合金工具 CVD 金刚石涂层的制备技术、涂层组织 及结合力研究[学位论文].北京:北京科技大学2001:52) [7] Li XChen D ZZhang Y.An improvement on the quality of CVD diamond films on WC-Co (YG6) substrate. Geoscience 199812(2):289 (李询陈代璋张岩.提高 WC—Co 合金基底沉积金刚石膜质 量的研究.现代地质199812(2):289) [8] Huang Y SQiu W QLiu Z Y.Studies of nucleation of diamond films grown by chemical vapor deposition. V ac Sci Technol 200121(6):492 (黄元盛邱万奇刘正义.CVD 金刚石形核的研究.真空科学 与技术200121(6):492) [9] Huang Y SLiu Z YQiu W Q.Study on second nucleation mechanism of CVD diamond films. Mater Sci Eng200121 (1):50 (黄元盛刘正义邱万奇.CVD 金刚石薄膜二次形核机制的 研究.材料科学与工程200121(1):50) [10] Kim W KWhang K W.Deposition of diamond film by a magnetized DC plasma jet.Mater Manuf Process19938(1):83 [11] Zhong G FShen F ZTang W Zet al.Effects of surface temperature on diamond films prepared by DC arc plasma jet CVD method.J Univ Sci Technol Beijing199921(4):353 (钟国仿申发振唐伟忠等.基片温度对直流电弧等离子体 喷射沉积金刚石膜的影响.北京科技大学学报199921(4): 353) [12] Wada N Solin S A. Raman efficiency measurements of graphite.Phys B1981105:353 [13] Huang T BLiu J MZhong G Fet al.Preparation of large are free standing thick diamond wafers.J Univ Sci Technol Beijing200022(3):234 (黄天斌刘敬明钟国仿等.大面积无衬底自支撑金刚石厚 膜沉积.北京科技大学学报200022(3):234) 第5期 张玉军等: 声表面波器件金刚石薄膜基片的制备工艺 ·547·