Table 1.

Obtained room temperature experimental phonon frequencies in Raman spectra of MoS₂ grown on c-Al₂O₃ under 300, 100, 10 mTorr, and pristine MoS₂ respectively

Phonon Mode	300 mTorr (cm−1)	100 mTorr (cm−1)	10 mTorr (cm−1)	MoS2 (cm−1)
A1g	∼405.6	∼406.2	∼407.2	∼407.5
E2g	∼376.1	∼381.8	∼381.4	∼381.5
E1g	∼285.4	∼287.1	∼287.6	∼288.2
J1	∼148.8	∼151	–	–
J2	∼197, and ∼222	∼227	∼225.4	∼225.1
J3	∼333	∼332	–	–

Here the intensities of the most intense (A_1g) peak are normalized.