Synthesis and characterization of highly-conducting nitrogen-doped ultrananocrystalline diamond films
- and others
Ultrananocrystalline diamond (UNCD) films with up to 0.2% total nitrogen content were synthesized by a microwave plasma-enhanced chemical-vapor-deposition method using a CH{sub 4}(1%)/Ar gas mixture and 1%--20% nitrogen gas added. The electrical conductivity of the nitrogen-doped UNCD films increases by five orders of magnitude (up to 143 {Omega}-1 cm-1) with increasing nitrogen content. Conductivity and Hall measurements made as a function of film temperature down to 4.2 K indicate that these films have the highest n-type conductivity and carrier concentration demonstrated for phase-pure diamond thin films. Grain-boundary conduction is proposed to explain the remarkable transport properties of these films.
- Research Organization:
- Argonne National Laboratory (ANL), Argonne, IL
- Sponsoring Organization:
- (US)
- DOE Contract Number:
- W-31-109-ENG-38
- OSTI ID:
- 40277676
- Journal Information:
- Applied Physics Letters, Vol. 79, Issue 10; Other Information: DOI: 10.1063/1.1400761; Othernumber: APPLAB000079000010001441000001; 032136APL; PBD: 3 Sep 2001; ISSN 0003-6951
- Publisher:
- The American Physical Society
- Country of Publication:
- United States
- Language:
- English
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