The performance of the quasi-solid state DSSC composed of long wavelength absorbing squaraine dye was investigated and compared with that of ruthenium-complex (N3) sensitized DSSC. In spite of the narrow sensitizing region of SQ dye from 500nm to 750nm, the quasi-solid state DSSCs gave a moderate solar energy-to-electricity conversion efficiency under AM 1.5G irradiation (100 mW/cm(2)) of 2.34%, a short-circuit current density of 5.56mA/cm(2), with an open-circuit voltage of 650mV.