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Fabrication of iron carbide by plasma-enhanced atomic layer deposition

  • Xu Tian (a1), Xiangyu Zhang (a1), Yulian Hu (a1), Bowen Liu (a1), Yuxia Yuan (a1), Lizhen Yang (a1), Qiang Chen (a1) and Zhongwei Liu (a1)...

Abstract

Iron carbide (Fe1−xCx) thin films were successfully grown by plasma-enhanced atomic layer deposition (PEALD) using bis(N,N′-di-tert-butylacetamidinato)iron(II) as a precursor and H2 plasma as a reactant. Smooth and pure Fe1−xCx thin films were obtained by the PEALD process in a layer-by-layer film growth fashion, and the x in the nominal formula of Fe1−xCx is approximately 0.26. For the wide PEALD temperature window from 80 to 210 °C, a saturated film growth rate of 0.04 nm/cycle was achieved. X-ray diffraction and transition electron microscope measurements show that the films grown at deposition temperature 80–170 °C are amorphous; however, at 210 °C, the crystal structure of Fe7C3 is formed. The conformality and resistivity of the deposited films have also been studied. At last, the PEALD Fe1−xCx on carbon cloth shows excellent electrocatalytic performance for hydrogen evolution.

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Corresponding author

a)Address all correspondence to this author. e-mail: liuzhongwei@bigc.edu.cn

References

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Keywords

Fabrication of iron carbide by plasma-enhanced atomic layer deposition

  • Xu Tian (a1), Xiangyu Zhang (a1), Yulian Hu (a1), Bowen Liu (a1), Yuxia Yuan (a1), Lizhen Yang (a1), Qiang Chen (a1) and Zhongwei Liu (a1)...

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