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Excitation energy dependent Raman spectrum of MoSe2
Dahyun Nam, Jae-Ung Lee, Hyeonsik Cheong
Raman investigation of MoSe2 was carried out with eight different excitation energies. Seven peaks, including E1g, A1g, E2g1, and A2u2 peaks are observed in the range of 100-400 cm…
Anomalous polarization dependence of Raman scattering and crystallographic orientation of black phosphorus
Jungcheol Kim, Jae-Ung Lee, Jinhwan Lee +4
We investigated polarization dependence of the Raman modes in black phosphorus (BP) using five different excitation wavelengths. The crystallographic orientation was determined by…
Resonant Raman and photoluminescence spectra of suspended molybdenum disulfide
Jae-Ung Lee, Kangwon Kim, Hyeonsik Cheong
Raman and photoluminescence (PL) measurements were performed on suspended and supported MoS2 up to 6 trilayers (TLs). The difference in the dielectric environment of suspended and…
Photocurrent generation at ABA/ABC lateral junction in tri-layer graphene photodetector
Minjung Kim, Seon-Myeong Choi, Ho Ang Yoon +6
Metal-graphene-metal photodetectors utilize photocurrent generated near the graphene/metal junctions and have many advantages including high speed and broad-band operation. Here, w…
Anomalous excitonic resonance Raman effects in few-layer MoS2
Jae-Ung Lee, Jaesung Park, Young-Woo Son +1
The resonance effects on the Raman spectra from 5 to 900 cm-1 of few-layer MoS2 thin films up to 14-layers were investigated by using six excitation energies. For the main first-or…