Table 2: Adsorbed amount of dye and cell performancea of A1, A2, and A3 sensitizers with and without DCA.

SensitizerDCA (mM)IPCEmaxJ sc (mA cm-2)V oc (V)FFη (%) Dye loadb (10-8 mol cm-2)

A106715.90.530.635.3111.5
157418.50.560.646.637.6

A206917.20.570.636.189.4
157218.10.580.656.827.2

A307218.00.640.667.607.3
157017.40.640.677.466.6

aConditions: sealed cells; coadsorbate, DCA 0 or 15 mM; photoelectrode, TiO2 (20 μm thickness and 0.25 cm2); electrolyte, 0.6 M DMPII, 0.1 M LiI, 0.05 I2 in AN; irradiated light, AM 1.5 solar light (100 mW cm-2). J sc: short-circuit photocurrent density; V oc: open-circuit photovoltage; FF: fill factor; η: total power conversion efficiency; IPCE: incident photon-to-current conversion efficiency.
bSurface concentration of the dye molecules on TiO2 film.