Very High Field-Emission Current From a Carbon-Nanotube Cathode With a Pulse Driving Mode
Very High Field-Emission Current From a Carbon-Nanotube Cathode With a Pulse Driving Mode
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采用脉冲驱动模式的碳纳米管阴极产生非常高的场发射电流
DOI：
10.1109/led.2009.2015589
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发表时间：
2009-03
影响因子：
4.9
通讯作者：
中科院分区：
文献类型：
--
作者：
碳纳米管（CNT）阴极由于其良好的场发射性能，在高频电子和显示器件中具有广阔的应用前景。通过理论分析和实验研究了脉冲驱动方式下碳纳米管的场发射性能。研究了场发射二极管在不同外电阻和输入电压下的脉冲响应。从模拟和实验可以看出，大的外电阻和小的输入电压可以保持稳定的场发射。但是，它限制了脉冲场发射电流的峰值。在适当的外电阻下，获得了2A（电流密度为8A/cm ~ 2）的场发射电流，脉宽50 ms，占空比1：50。实验结果还表明，在脉冲驱动模式下，场发射的均匀性得到了明显改善。
Carbon-nanotube (CNT) cathode has promising applications in high-frequency electron and display devices due to its good field-emission performance. The field-emission performance of CNTs with a pulse driving mode is studied both by theoretical analysis and experiments. The impulse responses of a field-emission diode with different external resistance and input voltage are investigated. From the simulations and experiments, it can be seen that the large external resistance and small input voltage can keep a stable field emission. However, it limits the peak value of pulse field-emission current. With a proper external resistance, a very high field-emission current of 2 A (current density is 8 A/cm2) is obtained with 50-ms pulsewidth and 1 : 50 duty cycle. The experimental results also show that the uniformity of field emission is improved obviously in a pulse driving mode.
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影响因子：
4
作者：
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通讯作者：
Duck‐Jung Lee;S. Moon;Yun‐Hi Lee;J. Yoo;Jeung‐Hoon Park;Jin Jang;B. Ju
影响因子：
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作者：
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通讯作者：
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影响因子：
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作者：
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通讯作者：
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影响因子：
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作者：
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通讯作者：
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DOI：
10.1016/j.physe.2006.07.034
发表时间：
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影响因子：
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作者：
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通讯作者：
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