Table 2 shows the amounts of the adsorbed D908 dyes and the photovoltaic parameters of DSC devices with cyclopropylacetic acid (CPRAA), cyclopentylacetic acid (CPEAA), cyclohexylacetic acid (CHEAA), cycloheptylacetic acid (CHPAA), tert-butylacetic acid (TBAA) and naphthylacetic acid (NPAA).