2017/04/07 by Chenwei Tang, Shuai Jia, Tang, Chenwei +7 · 1 citation
Engineering · Materials Science · #2D Materials and Applications #FOS: Physical sciences #Mesoscale and Nanoscale Physics (cond-mat.mes-hall) #Optics (physics.optics) #Plasmonic and Surface Plasmon Research #Quantum Dots Synthesis And Properties
paper · pdf · doi:10.48550/arxiv.1704.02396
openalex publication_date 2017/04/07 · openalex created_date 2017/04/28 · openalex updated_date 2026/07/28
Band gap tuning in two-dimensional transitional metal dichalcogenides (TMDs) is crucial in fabricating new optoelectronic devices. High resolution photoluminescence (PL) microscopy is needed for accurate band gap characterization. We performed tip-enhanced photoluminescence (TEPL) measurements of monolayer MoSe2 with nanoscale spatial resolution, providing an improved characterization of the band gap correlated with the topography compared with the conventional far field spectroscopy. We also observed PL shifts at the edges and investigated the spatial dependence of the TEPL enhancement factors.