Research Article

DFT Studies of p-N,N-(Dimethylamino) Benzoic Acid with Para or Meta–Electron Withdrawing or Donating Moieties for Dye-Sensitized Solar Cells (DSSCs)

Figure 5

Schematic diagram of the HOMO-LUMO energy levels of the DMSO-solvated D1 and D1.1-D1.7 dyes were estimated by using the B3LYP/6-311++G level of theory.