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Ambipolar field-effect transistor on as-grown single-wall carbon nanotubes

机译:生长中的单壁碳纳米管上的双极场效应晶体管

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摘要

We use a simultaneous flow of ethylene and hydrogen gases to grow single-wall carbon nanotubes by chemical vapour deposition. Strong coupling to the gate is inferred from transport measurements for both metallic and semiconducting tubes. At low temperatures, our samples act as single-electron transistors where the transport mechanism is mainly governed by Coulomb blockade. The measurements reveal very rich quantized energy level spectra spanning from the valence to the conduction band. The Coulomb diamonds have similar addition energies on both sides of the semiconducting gap. Signatures of the subband population have been observed at intermediate temperature.
机译:我们使用乙烯和氢气的同时流动通过化学气相沉积来生长单壁碳纳米管。从金属管和半导体管的传输测量结果可以推断出到门的强耦合。在低温下,我们的样品充当单电子晶体管,其传输机制主要受库仑阻塞的支配。这些测量揭示了非常丰富的,从价数到导带的量化能级谱。库仑金刚石在半导体间隙的两侧具有相似的加能。在中等温度下已观察到子带种群的签名。

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