Plasmon-Assisted selective enhancement of direct-band transitions in multi-layer MoS2

Tejendra Dixit, Ankit Arora, Miryala Muralidhar, Masato Murakami, Pramoda K. Nayak, Kolla Lakshmi Ganapathi, M. S. Ramachandra Rao

研究成果: Article査読

2 被引用数 (Scopus)

抄録

Multi-layer MoS2offers numerous advantages over mono-layer MoS2 in terms of improved absorption, enhanced emission and high optical density of states, which make it a better candidate for devices. However, the selective tuning of the direct-band emissions in multi-layer MoS2 is essential for various optoelectronic applications. In this work, we have demonstrated a systematic tuning of direct-band transitions in multi-layer MoS2using Au coating prepared by sputtering and e-beam evaporation. We observed nearly 80-fold enhancement in the ratio of direct-To indirect-peak intensity with Au coating (e-beam) to that of the direct-To indirect-peak intensity of pristine samples. Along with that, complete quenching in the emissions corresponding to I-valley has been observed with Au coating. This work provides new dimensions towards the realization of plasmonic/optoelectronic devices based on multi-layer MoS2

本文言語English
ジャーナルIEEE Photonics Journal
11
5
DOI
出版ステータスPublished - 2019 10

ASJC Scopus subject areas

  • 原子分子物理学および光学
  • 電子工学および電気工学

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