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. 2021 May 20;22(10):5401. doi: 10.3390/ijms22105401

Table A1.

The positions of the bands in the Raman first-order spectrum with the corresponding elements of the structure.

Bands Raman Shift/cm−1 Structure Characteristic for a Vibration Mode
G ≈1580 ideal graphitic lattice
D1 (D) ≈1350 disordered graphitic lattice—graphene layer edges
D2 ≈1620 disordered graphitic lattice—surface graphene layers
D3 ≈1500 amorphous carbon
D4 ≈1200 disordered graphitic lattice polyenes, ionic impurities