| Effect of geometrical parameters on the field-emission properties of single-walled carbon nanotube ropes | |
| Z. G. Zhao; Y. Tong; C. Liu; H. M. Cheng | |
| 2003 | |
| Source Publication | Journal of Materials Research
 |
| ISSN | 0884-2914 |
| Volume | 18Issue:9Pages:2188-2193 |
| Abstract | Aligned single-walled carbon nanotube (SWNT) ropes show excellent field-emission performance due to their high aspect ratio and sound alignment. In this study, the effect of geometrical parameters, such as cathode-anode distance and the height of SWNT ropes on the field-emission properties of SWNT ropes was investigated. It was found that the cathode-anode distance influences the emission properties, such as the turn-on field F-to and threshold field F-thr, of SWNT ropes, and the turn-on and threshold fields are marginally decreased at relatively larger gaps between the SWNT emitter tip and the anode plane. It was also found that the emission properties of SWNT ropes are improved by increasing the rope length, at least in the present experimental range. A possible two-step field amplification model was proposed to explain this length effect of SWNT ropes. The estimated results show that the local field at the tip of SWNT ropes, which causes a certain emission-current density, seems not to change with the cathode-anode distance, and the effective emission area of the SWNT rope is much smaller than the apparent cross-sectional area of the SWNT rope. The results obtained suggest that it is possible to optimize the performance of SWNT rope-based cold cathode by adjusting geometrical parameters of SWNT rope emitters. |
| description.department | chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china.;cheng, hm (reprint author), chinese acad sci, inst met res, shenyang natl lab mat sci, 72 wenhua rd, shenyang 110016, peoples r china |
| URL | 查看原文 |
| WOS ID | WOS:000185154600026 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/36207 |
| Collection | 中国科学院金属研究所 |
| Recommended Citation GB/T 7714 | Z. G. Zhao,Y. Tong,C. Liu,et al. Effect of geometrical parameters on the field-emission properties of single-walled carbon nanotube ropes[J]. Journal of Materials Research,2003,18(9):2188-2193. |
| APA | Z. G. Zhao,Y. Tong,C. Liu,&H. M. Cheng.(2003).Effect of geometrical parameters on the field-emission properties of single-walled carbon nanotube ropes.Journal of Materials Research,18(9),2188-2193. |
| MLA | Z. G. Zhao,et al."Effect of geometrical parameters on the field-emission properties of single-walled carbon nanotube ropes".Journal of Materials Research 18.9(2003):2188-2193. |
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