Raman Scattering in 2H-MoS2 Single Crystal

A study of a molybdenum disulfide (MoS2) grown by the direct vapor transport method was conducted by using Raman scattering measurements. The first and second order Raman spectra of 2H-MoS2 has been observed in the range 100 cm(-1) to 900 cm(-1) at room temperature. The central force model is applied to the high-frequency phonons to calculate the force constant.