Ru Thin Film Formation Using Oxygen Plasma Enhanced ALD and Rapid Thermal Processing

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Abstract:

A novel Ru thin film formation method was proposed to deposit metallic Ru thin films on TiN substrate for future backend of line process in semiconductor technologies. RuO2 thin films were first grown on TiN substrate by oxygen plasma-enhanced atomic layer deposition technique. The deposited RuO2 thin films were then reduced into metallic Ru thin films by H2/N2-assisted annealing.

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8-13

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March 2015

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© 2015 Trans Tech Publications Ltd. All Rights Reserved

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[1] H. Kim, The application of atomic layer deposition for metallization of 65 nm and beyond Surf. Coat. Technol. 200 (2006) 3104-3111.

DOI: 10.1016/j.surfcoat.2005.07.006

Google Scholar

[2] J. Rullan, T. Ishizaka, F. Cerio, S. Mizuno, Y. Mizusawa, T. Ponnuswamy, et al., Low resistance wiring and 2Xnm void free fill with CVD Ruthenium liner and DirectSeed TM copper, Interconnect Technol. Conf. 2010 (IITC 2010) 1-3.

DOI: 10.1109/iitc.2010.5510705

Google Scholar

[3] D. -C. Perng, K. -C. Hsu, S. -W. Tsai, J. -B. Yeh, Thermal and Electrical Properties of PVD Ru(P) Film as Cu Diffusion Barrier, Microelectron. Eng. 87 (2010) 365-369.

DOI: 10.1016/j.mee.2009.06.007

Google Scholar

[4] T. E. Hong, S. -H. Choi, S. Yeo, J. -Y. Park, S. -H. Kim, T. Cheon, et al., Atomic Layer Deposition of Ru Thin Films Using a Ru(0) Metallorganic Precursor and O2, ECS Journal of Solid State Science and Technology Vol. 2(2013) 47-53.

DOI: 10.1149/2.001303jss

Google Scholar

[5] M. Raevskaya, I. Yanson, A. Tatarkina, I. Sokolova, The effect of nickel on interaction in the copper-ruthenium system, Journal of the Less Common Metals. 132 (1987) 237-241.

DOI: 10.1016/0022-5088(87)90579-0

Google Scholar

[6] T. N. Arunagiri, Y. Zhang, O. Chyan, M. El-Bouanani, M. J. Kim, K. H. Chen, et al., 5nm ruthenium thin film as a directly plateable copper diffusion barrier, Appl. Phys. Lett. 86 (2005) 083104.

DOI: 10.1063/1.1867560

Google Scholar

[7] W. Sari, T. -K. Eom, C. -W. Jeon, H. Sohn, S. -H. Kim, Improvement of the Diffusion Barrier Performance of Ru by Incorporating a WNx Thin Film for Direct-Plateable Cu Interconnects, Electrochem. Solid-State Lett. 12 (2009) H248.

DOI: 10.1149/1.3117242

Google Scholar

[8] L. B. Henderson, J. G. Ekerdt, Time-to-failure analysis of 5 nm amorphous Ru(P) as a copper diffusion barrier, Thin Solid Films. 517 (2009) 1645-1649.

DOI: 10.1016/j.tsf.2008.10.009

Google Scholar

[9] C. Yang, B. Li, S. C. Seo, S. Molis, and D. Edelstein, Evaluation of Direct Cu Electroplating on Ru: Feature Fill, Parametric, and Reliability, IEEE Electron. Device. Lett. 32 (2011) 200-202.

DOI: 10.1109/led.2010.2091490

Google Scholar

[10] K.C. Hsu, D.C. Perng, Y.C. Wang, Robust ultra-thin RuMo alloy film as a seedless Cu diffusion barrier, Journal of Alloys and Compounds. 516 (2012) 102-106.

DOI: 10.1016/j.jallcom.2011.11.144

Google Scholar

[11] H. Wojcik, R. Kaltofen, C. Krien, U. Merkel, C. Wenzel, J. Bartha, et al., Investigations on Ru-Mn films as plateable Cu diffusion barriers, Interconnect Technology Conference and 2011 Materials for Advanced Metallization (IITC/MAM). (2011) 1-3.

DOI: 10.1109/iitc.2011.5940262

Google Scholar

[12] T. Ishizaka, A. Gomi, T. Kato, T. Sakuma, O. Yokoyama, C. Yasumuro, et al., Cu dry-fill on CVD Ru liner for advanced gap-fill and lower resistance, Interconnect Technology Conference and 2011 Materials for Advanced Metallization (IITC/MAM). (2011).

DOI: 10.1109/iitc.2011.5940338

Google Scholar

[13] O. Van der Straten, J. Wynne, T. Vo, J. Maniscalco, T. Nogami, I. Ali, et al., PEALD Ru Liner Conformality and Cu Trench Fill Characteristics, ECS Transactions. 16 (2008) 193-200.

DOI: 10.1149/1.2979994

Google Scholar

[14] S. -H. Kim, H. T. Kim, S. -S. Yim, D. -J. Lee, K. -S. Kim, H. -M. Kim, et al., A Bilayer Diffusion Barrier of ALD-Ru/ALD-TaCN for Direct Plating of Cu, J. Electrochem. Soc. 155 (2008) H589.

DOI: 10.1149/1.2940447

Google Scholar

[15] M. Abe, M. Ueki, M. Tada, T. Onodera, N. Furutake, K. Shimura, et al., Highly-oriented PVD Ruthenium Liner for Low-resistance Direct-plated Cu Interconnects, Interconnect Technology Conference (ITC), 2007. (2007) 4-6.

DOI: 10.1109/iitc.2007.382331

Google Scholar

[16] K. Kukli, J. Aarik, A. Aidla, I. Jõgi, T. Arroval, J. Lu, et al., Atomic layer deposition of Ru films from bis(2, 5-dimethylpyrrolyl)ruthenium and oxygen, Thin Solid Films. 520 (2012) 2756-2763.

DOI: 10.1016/j.tsf.2011.11.088

Google Scholar

[17] K. Gregorczyk, P. Banerjee, G. W. Rubloff, Conduction in ultrathin ruthenium electrodes prepared by atomic layer deposition, Mater. Lett. 73 (2012) 43-46.

DOI: 10.1016/j.matlet.2011.12.117

Google Scholar

[18] N. Leick, R. O. F. Verkuijlen, L. Lamagna, E. Langereis, S. Rushworth, F. Roozeboom, et al., Atomic layer deposition of Ru from CpRu(CO)2Et using O2 gas and O2 plasma, J. Vac. Sci. Technol. A. 29 (2011) 021016.

DOI: 10.1116/1.3554691

Google Scholar

[19] H. Wojcik, M. Junige, W. Bartha, M. Albert, V. Neumann, U. Merkel, et al., Physical Characterization of PECVD and PEALD Ru(-C) Films and Comparison with PVD Ruthenium Film Properties, J. Electrochem. Soc. 159 (2012) H166.

DOI: 10.1149/2.066202jes

Google Scholar

[20] Q. Xie, Y. -L. Jiang, J. Musschoot, D. Deduytsche, C. Detavernier, R. L. Van Meirhaeghe, et al., Ru thin film grown on TaN by plasma enhanced atomic layer deposition, Thin Solid Films. 517 (2009) 4689-4693.

DOI: 10.1016/j.tsf.2009.03.001

Google Scholar

[21] O. -K. Kwon, J. -H. Kim, H. -S. Park, and S. -W. Kang, Atomic Layer Deposition of Ruthenium Thin Films for Copper Glue Layer, J. Electrochem. Soc. 151 (2004) G109.

DOI: 10.1149/1.1640633

Google Scholar