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Reliability Measurements and Thermal Stabilities of W-C-N Thin Films Using Nanoindenter

Nanoindenter를 이용한 W-C-N 박막의 신뢰도 측정과 열적 안정성 연구

  • Received : 2011.02.21
  • Accepted : 2011.04.12
  • Published : 2011.05.30

Abstract

In this paper, we deposited the tungsten carbon nitride (W-C-N; nitrogen gas flow of 2 sccm) and tungsten carbon (W-C) thin film on silicon substrate using rf magnetron sputter. Then the thin films annealed at $800^{\circ}C$ during 30 minute ($N_2$ gas ambient) for thermal damage. Nano-indenter was executed 16 points on thin film surface to measure the thermal stability, and we also propose the elastic modulus and the Weibull distribution, respectively. This nanotribology method provides statistically reliable information. From these results, the W-C-N thin film included nitrogen gas flow is more stable for film uniformities, physical properties and crystallinities than that of not included nitrogen gas flow.

이 논문에서는 반도체의 기판으로 사용되는 Si(silicon)기판과 금속배선 물질인 Cu(copper)의 확산을 효과적으로 방지하기 위한 W(Tungsten)-C(Carbon)-N(Nitrogen) 확산방지막을 제시하였고, 시료 증착을 위하여 rf magnetron sputter를 사용하여 동일한 증착조건에서 질소(N)의 비율을 다르게 증착한 후 시료의 열적 안정성 측정을 위하여 상온에서 $800^{\circ}C$까지 각각 질소 분위기에서 30분간 열처리 과정을 실시하여 열적 손상을 인가하였다. 이후 Nanoindentation 기법을 이용하여 총 16 points에서 Elastic modulus와 Weibull distribution을 측정하였다. 그 결과 질화물질이 고온에서 물성변화가 적게 나타나는 것을 알 수 있었고, 온도변화에 따른 박막의 균일도와 결정성 또한 질화물질에서 더 안정적이었다.

Keywords

References

  1. S. I. Kim and C. W. Lee, J. Korean Vacuum Soc.17, 518 (2008). https://doi.org/10.5757/JKVS.2008.17.6.518
  2. S. I. Kim and C. W. Lee, J. Korean Phys. Soc. 55(3),995 (2009). https://doi.org/10.3938/jkps.55.995
  3. B. Bhushan, Handbook of micro nanotribiologypp.321-409 (1996).
  4. I. N. Sneddon, J. Eng. Sci. 3, 47 (1965). https://doi.org/10.1016/0020-7225(65)90019-4
  5. M. F. Doerner and W. D. Nix, J. Mater. Res. 1, 601(1986). https://doi.org/10.1557/JMR.1986.0601
  6. W. C. Oliver and G. M. Pharr, J. Mater. Res. 7, 1564(1992). https://doi.org/10.1557/JMR.1992.1564
  7. D. Olteanu and L. Freeman, Quality Engineering 22,256 (2010). https://doi.org/10.1080/08982112.2010.505219
  8. S. I. Kim and C. W. Lee, J. Korean Vacuum Soc.16, 348 (2007). https://doi.org/10.5757/JKVS.2007.16.5.348

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