一种植入玻璃表面的碳纳米管电极及其场发射性能研究
发布时间：2018-11-23 12:52
【摘要】：实现了一种通过水玻璃粘结剂将碳纳米管植入玻璃基底表面并呈现均匀"植布"效果的场发射电极。通过低温工艺固化碳纳米管形态,并保证高选择比的湿法刻蚀工艺,实现碳纳米管端部刻蚀露出作为场发射源,而根部植入水玻璃粘结介质中的分散植布效果。通过高温强化工艺,在碳纳米管与粘结剂结合界面形成1层稳定的-Si-O-薄膜,增加碳纳米管与阴极薄膜的结合力,提高其场发射性能。高温强化后电极开启电压由1.52V/μm降至0.74V/μm明显降低。同时,在外加场强2.3V/μm时,可以得到大于233μA的稳定场发射电流持续发射40h。
[Abstract]:A field emission electrode with uniform "cloth" effect on carbon nanotubes implanted on glass substrate by sodium silicate binder has been developed. The morphology of carbon nanotubes was solidified at low temperature and the wet etching process with high selective ratio was ensured. The results showed that the end etching of carbon nanotubes was used as a field emission source and the root was implanted in sodium silicate binder. A layer of stable Si-O- film was formed at the interface between carbon nanotube and binder by high temperature strengthening process. The bonding force between carbon nanotube and cathode film was increased and the field emission property was improved. The electrode opening voltage decreased from 1.52V/ 渭 m to 0.74V/ 渭 m after high temperature strengthening. At the same time, when the applied field strength is 2.3V/ 渭 m, the stable field emission current larger than 233 渭 A can be obtained for 40 h.
【作者单位】： 上海交通大学微米纳米加工技术国家级重点实验室;
【基金】：国家自然科学基金资助项目(51305265) 高等学校博士学科点专项科研基金资助项目(20120073110061)
【分类号】：TB383.1;O646.54
[Abstract]:A field emission electrode with uniform "cloth" effect on carbon nanotubes implanted on glass substrate by sodium silicate binder has been developed. The morphology of carbon nanotubes was solidified at low temperature and the wet etching process with high selective ratio was ensured. The results showed that the end etching of carbon nanotubes was used as a field emission source and the root was implanted in sodium silicate binder. A layer of stable Si-O- film was formed at the interface between carbon nanotube and binder by high temperature strengthening process. The bonding force between carbon nanotube and cathode film was increased and the field emission property was improved. The electrode opening voltage decreased from 1.52V/ 渭 m to 0.74V/ 渭 m after high temperature strengthening. At the same time, when the applied field strength is 2.3V/ 渭 m, the stable field emission current larger than 233 渭 A can be obtained for 40 h.
【作者单位】： 上海交通大学微米纳米加工技术国家级重点实验室;
【基金】：国家自然科学基金资助项目(51305265) 高等学校博士学科点专项科研基金资助项目(20120073110061)
【分类号】：TB383.1;O646.54
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