Theoretical Screening of âNH2-, âOH-, âCH3-, âF-, and âSH-Substituted Porphyrins As Sensitizer Candidates for Dye-Sensitized Solar Cells. - Ruimin Ma; Ping Guo; Linlin Yang; Lianshun Guo; Xianxi Zhang; Mohammad K. Nazeeruddin; Michael GraÌtzel (Journal of Physical Chemistry A, 2010)