TABLE 1.

Photovoltaic, optical, and electrochemical responses of representative devices for the sensitizers in organic solvent–based electrolyte.

Sensitizer	${\mathrm{\lambda }}_{\max }\left(\mathrm{nm}\right)$	Ɛ a (103 M−1 cm−1)	Rs $\left(\mathrm{\Omega }\right)$	${\mathrm{R}}_{\mathrm{ct1}}\left(\mathrm{\Omega }\right)$	${\mathrm{R}}_{\mathrm{ct2}}\left(\mathrm{\Omega }\right)$	Jsc (mA/cm2)	Voc (V)	FF (%)	$\eta (\%)$
Catechol	278	2.8	5.0	240.0	8,473.0	0.76	0.48	67.6	0.25
Z907	524,388, 298	5.6,3.6,19.2	5.1	10.7	532.1	9.77	0.72	72.5	5.08
Catechol + Z907			5.4	3.0	282.3	12.09	0.67	67.7	5.44

^a-Molar absorptivity of sensitizers in ethanol, R_s series resistance between FTO/TiO₂, R_ct1 charge transfer resistance between cathode and electrolyte, R_ct2 electron transfer resistance among TiO₂/dye/electrolyte.