Electronic Materials Letters

, Volume 15, Issue 3, pp 357–362 | Cite as

Selection of CVD Diamond Crystal Size on a CVD Pad Conditioner for Improved Lifetime

  • Heon-Yul Ryu
  • Ji-Woo Kim
  • Da-Bin Hyun
  • Yeo-Ho Kim
  • Jung-Hwan Lee
  • Jin-Goo ParkEmail author
Original Article - Nanomaterials


Pad conditioners are important consumables for semiconductor chemical mechanical planarization processes. Recently, a new concept has been developed to improve the performance and lifetime of a pad conditioner by depositing diamond film on a uniformly patterned substrate. In this study, we investigated the pad conditioner lifetime while varying the crystal size of the deposited diamond film, which was controlled via different methane (CH4) gas concentrations in hydrogen gas (H2). Microcrystalline diamond (MCD) film was formed using 2% CH4 in H2 flow and nanocrystalline diamond film (NCD) was formed with 4% CH4. The NCD film showed a longer lifetime and higher adhesion with the substrate than the MCD film.

Graphical Abstract


CMP pad conditioner CVD conditioner Diamond crystal size Raman spectroscopy Conditioner lifetime 



This research was supported by Ansan-Si hidden champion fostering and supporting project funded by Ansan city.


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Copyright information

© The Korean Institute of Metals and Materials 2019

Authors and Affiliations

  1. 1.Department of BionanotechnologyHanyang University ERICAAnsanRepublic of Korea
  2. 2.Department of Materials Science and Chemical EngineeringHanyang University ERICAAnsanRepublic of Korea
  3. 3.SAESOL Diamond Ind. Co., Ltd.AnsanRepublic of Korea

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