A low cost plasmonic platform for photon emission engineering of two dimensional semiconductors
Abstract
Although the field of 2D materials has democratized materials science by making high quality samples accessible cheaply, due to the atomically thin nature of these systems, an integration with nanostructures is almost always required to obtain a significant optical response. Traditionally, these nanostructures are fabricated via electron beam lithography or focused ion beam milling, which are expensive and large area fabrication can be further time consuming. In order to overcome this problem, we report the integration of 2D semiconductors on a cost-effective and large area fabricated nanocone platform. We show that the plasmon modes of our nanocone structures lead to photoluminescence (PL) enhancement of monolayer WSe by about eight to ten times compared to the non-plasmonic case, consistent with finite-difference time-domain simulations. Excitation power-dependent measurements reveal that our nanocone platform enables a versatile route to engineering the relative exciton trion contributions to the emission.
Keywords
Cite
@article{arxiv.2203.11897,
title = {A low cost plasmonic platform for photon emission engineering of two dimensional semiconductors},
author = {Anuj Kumar Singh and Kishor K Mandal and Yashika Gupta and Abhay Anand VS and Lekshmi Eswaramoorthy and Brijesh Kumar and Abhinav Kala and Saurabh Dixit and Venu Gopal Achanta and Anshuman Kumar},
journal= {arXiv preprint arXiv:2203.11897},
year = {2022}
}