Density control of carbon nanotubes and filaments films by wet etching of catalyst particles and effects on field emission properties
Source abstract
Abstract
Carbon nanotubes and filaments (CNT&F) films with controlled density were grown by low pressure thermal chemical vapour deposition from acetylene on nickel nanoparticles. Density control was achieved by wet etching of the catalyst particles before carbon growth. Field emission measurements were carried out on several films with different CNT&F densities obtained with this method. Despite strong morphological changes, only slight differences in the field emission characteristics between the highest and the lowest density films were detected, suggesting that almost none of the CNT&F suppressed by the etching step took part to the field emission. However, a maximum field amplification factor was reached for the medium density film. Taking into account the field amplification factor distribution, a model is proposed to link the particles diameter distribution, the CNT&F film morphology and the field emission properties.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Carbon Nanotubes in Composites · Graphene research and applications · Thermal Radiation and Cooling Technologies
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (29)
Show source-provided references
1. Carbon nanotube film as electron field emitters10.1016/S0008-6223(02)00011-8 ↗
2. Field emission from carbon nanotubes: the first five years10.1016/S0038-1101(00)00213-6 ↗
3. Tuning the field emission properties of patterned carbon nanotubes films10.1002/1521-4095(200102)13:3<184::AID-ADMA184>3.0.CO;2-I ↗
4. Patterned growth individual and multiple vertically aligned carbon nanofibers10.1063/1.126705 ↗
5. Field emission from dense, sparse and patterned arrays of carbon nanofibers10.1063/1.1461868 ↗
6. The growth of freestanding single carbon nanotubes arrays10.1088/0957-4484/14/12/007 ↗
7. Growth of large periodic arrays of carbon nanotubes10.1063/1.1539299 ↗
8. Growth of aligned carbon nanotubes with controlled site density10.1063/1.1482790 ↗
9. Control of carbon nanotubes density through Ni nanoparticle formation using thermal and NH3 plasma treatment10.1016/S0925-9635(02)00237-6 ↗
10. Density control of carbon nanotubes NH3 plasma treatment of Ni catalyst layer10.1016/S0040-6090(03)00341-9 ↗
11. Dijon J, Fournier A, Montmayeul B, Zanghi D, Coll B, Bonard JM, et al. Cathode structures for carbon nanotube displays. Proceedings of Eurodisplay 2002 Conf. p. 821–4.
12. Toward a low cost high quality carbon nanotubes field emission display10.1889/1.1847735 ↗
13. Tutorial: the thermodynamics and kinetics of film agglomeration
14. O’Connor · 1995
15. Some comments on models for field enhancement10.1016/S0304-3991(02)00297-8 ↗
16. Measuring physical and mechanical properties of individual carbon nanotubes by in situ TEM10.1016/S0022-3697(99)00350-9 ↗
17. Stability of carbon nanotubes under electric field studied by scanning electron microscopy10.1063/1.1429300 ↗
18. Characterization of thin films electron emitters by scanning anode field emission microscopy10.1063/1.1379559 ↗
19. Dijon J, Fournier A, Goislard De Monsabert T, Montmayeul B, Zanghi D. Carbon nanotubes for field emission displays. In: AIP Conference Proceedings 685, Molecular Nanostructures: XVII International Winterschool/Euroconference on Electronic Properties of Novel Materials, Kirchberg (Austria), 2003. p. 592–604.10.1063/1.1628099 ↗
20. Dijon J, Boronat JF, Fournier A, Sarrasin D. Characterization of carbon nanotube statistics by using I(V) measurements. In: Proceedings of Asia Display/IDW’01 Conf, 2001. p. 1205–8.
21. Work function at the tips of multiwalled carbon nanotubes10.1063/1.1356442 ↗
22. Characterization of the field emission properties of individual thin carbon nanotubes10.1063/1.1786634 ↗
23. Field emission of individual carbon nanotubes in the scanning electron microscope10.1103/PhysRevLett.89.197602 ↗
24. Catalytic growth of carbon filaments10.1016/0008-6223(89)90062-6 ↗
25. Chemical vapor deposition of methane for single-walled carbon nanotubes10.1016/S0009-2614(98)00745-3 ↗
26. Correlation between metal catalyst particle size and carbon nanotube growth10.1016/S0009-2614(02)00283-X ↗
27. Effect of catalyst pre-treatment on the growth of carbon nanotubes10.1016/j.diamond.2003.11.045 ↗
28. The relationship between the state of active species in a Ni/Al2O3 catalyst and the mechanism of growth of filamentous carbon10.1023/A:1013235300777 ↗
29. In situ growth rate measurements and length control during chemical vapour deposition of vertically aligned multiwall carbon nanotubes10.1063/1.1605793 ↗