Enhancement of field emission properties in nanocrystalline diamond films upon 100 MeV silver ion irradiation
| Autor: | Abhinav Pratap Singh, Balakrishnan Sundaravel, Umesh Palnitkar, Huang-Chin Chen, I-Nan Lin, Ravi Kumar Ranade |
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| Rok vydání: | 2009 |
| Předmět: |
Materials science
Ion beam Synthetic diamond Mechanical Engineering Nanotechnology General Chemistry Carbon nanotube Fluence Molecular physics Electronic Optical and Magnetic Materials Ion law.invention Field electron emission law Materials Chemistry Irradiation Electrical and Electronic Engineering Current density |
| Zdroj: | Diamond and Related Materials. 18:164-168 |
| ISSN: | 0925-9635 |
| DOI: | 10.1016/j.diamond.2008.11.008 |
| Popis: | Enhanced field emission is observed in nanocrystalline diamond (NCD) films upon irradiation with 100 MeV Ag9+ ions in the range of fluences from 5 × 1010 to 5 × 1011 ions/cm2. Field emission characteristics monotonically changes with the ion beam fluence, but does not show any correlation with sp2 cluster size induced. Enhancement of field emission is presumed to result from the formation of interconnected sp2 cluster network. The turn-on field (E0) for inducing the electron field emission (EFE) has been lowered from 28 to 3.2 V/μm, whereas the EFE current density has been increased from 1.4 × 10− 6 to 2.086 mA/cm2. Such EFE properties are comparable with those of carbon nanotubes. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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