Pulsed electromagnetic inductive plasma-enhanced chemical-vapor deposition of amorphous carbon films

Kenji Ebihara, Seiji Kanazawa, Yukihiko Yamagata, Sadao Maeda

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


A pulsed electromagnetic inductive methane discharge process was developed to form amorphous carbon thin films. In order to estimate the methane plasma state in the pulsed plasma process, the time-resolved excitation temperature was measured by means of relative spectral intensity method. At the high electromagnetic compression phase the pulsed plasma has an excitation temperature of the same order (20 000-50 000 K) as in the conventional rf glow discharges. The deposited thin films are transparent in the IR and adhere well to room-temperature substrates. The optical energy gap and the electrical conductivity of the amorphous carbon films are investigated and compared with the amorphous carbon films prepared with rf glow plasma chemical vapor deposition. The optical gap is observed to decrease from 1.26 to 1.14 eV as the deposition temperature and the charging voltage increase. It is shown that dynamic pulsed plasma flows affect the phase transition from a diamondlike structure to a graphitic structure.

Original languageEnglish
Pages (from-to)1440-1445
Number of pages6
JournalJournal of Applied Physics
Issue number3
Publication statusPublished - 1988
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)


Dive into the research topics of 'Pulsed electromagnetic inductive plasma-enhanced chemical-vapor deposition of amorphous carbon films'. Together they form a unique fingerprint.

Cite this