Large area CVD-grown vertically and horizontally oriented MoS₂ nanostructures as SERS biosensors for single molecule detection

Abstract

Surface-enhanced Raman scattering (SERS) has owned extensive attraction for its rapidity, ultra-sensitivity, non-destructiveness and label-free fingerprint detection of trace molecules. Recently, two-dimensional transition metal dichalcogenides have been investigated as SERS...

Temperature Effects on Hybrid of Ag Nanoparticles and Monolayer MoS2 for Surface-Enhanced Raman Spectroscopy

“…Therefore, high-temperature annealing does not enhance the PL performance of MoS 2 . This temperature-dependent PL analysis has the potential to improve the efficiency of the photoinduced charge transfer process, particularly at lower temperatures, due to the reduced nonradiative recombination rates . This improvement facilitates charge transfer from the SERS substrate to molecules upon exposure to light, indicating a valuable method for promoting photoinduced charge transfer transitions and increasing the Raman scattering cross-section …”

“…This temperature-dependent PL analysis has the potential to improve the efficiency of the photoinduced charge transfer process, particularly at lower temperatures, due to the reduced nonradiative recombination rates. 48 This improvement facilitates charge transfer from the SERS substrate to molecules upon exposure to light, indicating a valuable method for promoting photoinduced charge transfer transitions and increasing the Raman scattering cross-section. 48 The SERS activity of Ag NPA/MoS 2 hybrids was evaluated by comparing the performance of Ag NPA/MoS 2 hybrids to Ag nanoparticle arrays.…”

“…48 This improvement facilitates charge transfer from the SERS substrate to molecules upon exposure to light, indicating a valuable method for promoting photoinduced charge transfer transitions and increasing the Raman scattering cross-section. 48 The SERS activity of Ag NPA/MoS 2 hybrids was evaluated by comparing the performance of Ag NPA/MoS 2 hybrids to Ag nanoparticle arrays. Raman spectra of MoS 2 and Ag NPA/ MoS 2 hybrids under 532 nm excitation are shown in Figure 2c.…”