Tuning the interference color with pecvd prepared dlc thickness

Saebom Park, Kwangbae Kim, Hojun Kim, Chihwan Kim, Hyun Woo Choi, Ohsung Song

Research output: Contribution to journalArticlepeer-review


Various surface colors are predicted and implemented using the interference color generated by controlling the thickness of nano-level diamond like carbon (DLC) thin film. Samples having thicknesses of up to 385 nm and various interference colors are prepared using a single crystal silicon (100) substrate with changing processing times at low temperature by plasma-enhanced chemical vapor deposition. The thickness, surface roughness, color, phases, and anti-scratch performance under each condition are analyzed using a scanning electron microscope, colorimeter, micro-Raman device, and scratch tester. Coating with the same uniformity as the surface roughness of the substrate is possible over the entire experimental thickness range, and more than five different colors are implemented at this time. The color matched with the color predicted by the model, assuming only the reflection mode of the thin film. All the DLC thin films show constant D/G peak fraction without significant change, and have anti-scratch values of about 19 N.

Original languageEnglish
Pages (from-to)403-408
Number of pages6
JournalKorean Journal of Materials Research
Issue number7
StatePublished - 2021


  • diamond like carbon
  • micro raman
  • surface color
  • thickness


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