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arXiv 1608.05239cond-mat.mtrl-sci
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石墨烯和h-BN上WS2的可扩展合成:用于轻物质转导的全二维平台

Scalable synthesis of WS2 on graphene and h-BN: an all-2D platform for light-matter transduction

Antonio Rossi, Holger Buech, Carmine Di Rienzo, Vaidotas Miseikis, Domenica Convertino, Ameer Al-Temimy, Valerio Voliani, Mauro Gemmi, Vincenzo Piazza, Camilla Coletti

摘要:

通过展示可测量的带隙和奇异的谷物理,原子厚度的二硫化钨(WS 2)为光电应用提供了令人兴奋的前景。在其他二维(2D)材料上合成连续的WS 2薄膜将极大地促进新型全二维光活性器件的实现。在这项工作中,我们展示了通过化学气相沉积(CVD)方法在石墨烯和六方氮化硼(h-BN)上可扩展的WS 2生长。光谱和显微镜分析表明,薄膜是双层厚,与局部单层夹杂物。光致发光测量显示了显着的保护在室温下的偏振峰值为74%的整个WS 2膜。此外,我们提出了一个可扩展的自下而上的光导和光电发射图案的设计方法。

英文摘要:

By exhibiting a measurable bandgap and exotic valley physics, atomically-thick tungsten disulfide (WS2) offers exciting prospects for optoelectronic applications. The synthesis of continuous WS2 films on other two-dimensional (2D) materials would greatly facilitate the implementation of novel all-2D photoactive devices. In this work we demonstrate the scalable growth of WS2 on graphene and hexagonal boron nitride (h-BN) via a chemical vapor deposition (CVD) approach. Spectroscopic and microscopic analysis reveal that the film is bilayer-thick, with local monolayer inclusions. Photoluminescence measurements show a remarkable conservation of polarization at room temperature peaking 74% for the entire WS2 film. Furthermore, we present a scalable bottom-up approach for the design of photoconductive and photoemitting patterns.

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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