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Plasma-enhanced atomic layer deposition of tantalum nitride thin films using tertiary-amylimido-tris(dimethylamido)tantalum and hydrogen plasma

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Abstract

Plasma-enhanced atomic layer deposition (PEALD) of tantalum nitride (TaN) thin films was investigated at a growth temperature of 230 °C using an alternating supply of tertiary-amylimido-tris(dimethylamido)tantalum (TAIMATA, Ta[NC(CH3)2C2H5][N(CH3)2]3) and hydrogen (H2) plasma. As the H2 plasma power increased from 75 to 175 W, the electrical resistivity of the films was improved from 1900 to 680 μΩ·cm, mainly due to the improved crystallinity. Moreover, the preferred orientation ratio between TaN (200) and TaN (111) planes also abruptly increased from 0.8 to 2.8 with increasing the H2 plasma power. This preferred orientation change of the films from (111) to (200) improves the adhesion properties between Cu and TaN, while the Cu diffusion barrier performance was not significantly affected.

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Acknowledgments

This research was supported by the Global Frontier R&D Program (2013M3A6B1078874) on Center for Hybrid Interface Materials (HIM) funded by the Ministry of Science, ICT & Future Planning.

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Authors and Affiliations

  1. School of Materials Science and Engineering, Pusan National University, Jangjeon 2-dong, Geumjeong-gu, Busan, 609-735, South Korea

    Ha-Jin Lee & Se-Hun Kwon

  2. Department of Materials Science and Engineering, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul, 133-791, South Korea

    Jin-Seong Park

  3. Global Frontier Center for Hybrid Interface Materials, Jangjeon 2-dong, Geumjeong-gu, Busan, 609-735, South Korea

    Se-Hun Kwon

  4. Department of Applied Hybrid Materials, School of Convergence Science, Pusan National University, Jangjeon 2-dong, Geumjeong-gu, Busan, 609-735, South Korea

    Se-Hun Kwon

Authors
  1. Ha-Jin Lee
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  2. Jin-Seong Park
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  3. Se-Hun Kwon
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Correspondence to Se-Hun Kwon.

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Lee, HJ., Park, JS. & Kwon, SH. Plasma-enhanced atomic layer deposition of tantalum nitride thin films using tertiary-amylimido-tris(dimethylamido)tantalum and hydrogen plasma. J Electroceram 36, 165–169 (2016). https://doi.org/10.1007/s10832-016-0015-4

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  • DOI: https://doi.org/10.1007/s10832-016-0015-4

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