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arXiv 1408.0905cond-mat.mtrl-sci
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laser诱导的双光子氧化对石墨烯的图案化和电光性质的调控

Patterning and tuning of electrical and optical properties of graphene by laser induced two-photon oxidation

Jukka Aumanen, Andreas Johansson, Juha Koivistoinen, Pasi Myllyperkiö, Mika Pettersson

摘要:

石墨烯是一种稳定、耐用、柔性、透明的材料,具有优异的导电性和不寻常的光学性质,在电子学、光子学和光电子学中有着许多新的应用。对于电子学中的应用,电性质的图案化和改性是非常期望的,因为原始石墨烯没有带隙。在这里,我们展示了一个简单的全光学图案化方法的石墨烯,基于激光诱导双光子氧化。通过调节照射强度和脉冲数,可以高精度地控制氧化水平,因此可以引入带隙,并且可以连续地调节电学和光学性质。可以对空气悬浮单层石墨烯或基底上的石墨烯进行任意复杂的图案化。该方法在室温下在环境空气中工作,并且不需要额外的处理步骤。所提出的概念允许用全光学方法开发全石墨烯电子和光电子器件以及复杂电路。

英文摘要:

Graphene, being an ultrathin, durable, flexible, transparent material with superior conductivity and unusual optical properties, promises many novel applications in electronics, photonics and optoelectronics. For applications in electronics, patterning and modification of electrical properties is very desirable since pristine graphene has no band gap. Here we demonstrate a simple all-optical patterning method for graphene, based on laser induced two-photon oxidation. By tuning the intensity of irradiation and the number of pulses the level of oxidation can be controlled to high precision and, therefore, a band gap can be introduced and electrical and optical properties can be continuously tuned. Arbitrary complex patterning can be performed for air-suspended monolayer graphene or for graphene on substrates. The method works at room temperature in ambient air and no additional processing step is needed. The presented concept allows development of all-graphene electronic and optoelectronic devices and complex circuits with an all-optical method.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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