Figure 7

(a) The room temperature photoluminescence spectrum of monolayer MoS\(_2\) on Si/SiO\(_2\) substrate. The three peak fit corresponds to A and B excitons and A\(^-\) trion. The peaks in the high energy are the Raman active phonon modes of MoS\(_2\) and Si/SiO\(_2\) substrate. (b) The schematic of the exciton and trion transitions.