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Electron transport behavior of individual zinc oxide coated single-walled carbon nanotubes

机译:单个氧化锌涂覆的单壁碳纳米管的电子传输行为

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Uniform zinc oxide coated single-walled nanotubes (SWNTs) were fabricated by ultrasonic irradiation with acid-treated SWNTs, zinc acetate, and triethanolamine at low temperature in aqueous phase processing. The ZnO coating process did not decrease the dark current of the SWNTs, but a real decrease in the steady state negative photocurrent was observed after ZnO coating, suggesting a clear photosensitization effect. Transport measurements reveal that the negative photocurrent in s (semiconducting)-SWNTs@ZnO could be described by electron_hole compensation behavior attributed to the ZnO layer under ultraviolet excitation. This simple coating method for one-dimensional material can open up new possibilities for multifunctional nanodevices.
机译:通过在水相处理中在低温下用酸处理的SWNT,乙酸锌和三乙醇胺进行超声波辐照来制备均匀的氧化锌涂层单壁纳米管(SWNT)。 ZnO涂覆过程并未降低SWNT的暗电流,但在ZnO涂覆后观察到稳态负光电流的实际下降,表明具有明显的光敏作用。传输测量表明,s(半导体)-SWNTs @ ZnO中的负光电流可以通过归因于紫外线激发下ZnO层的电子-空穴补偿行为来描述。这种用于一维材料的简单涂覆方法可以为多功能纳米器件开辟新的可能性。

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