Improving the spectral response of black dye by cosensitization with a simple indoline based dye in dye-sensitized solar cell

Indoline dye d-1 was successfully applied as a cosensitizer for improving the spectral response of black dye in dye-sensitized solar cells (dscs). it was observed that d-1 effectively increases the short-circuit photocurrent by offsetting the competitive light absorption by i / i 3 - electrolyte in the wavelength region 350-500 nm when adsorbed on the tionanocrystaline films in a mix dye system. the dscs containing the d-1 and black dye achieved a power conversion efficiency of 9.80 with higher short-circuit photocurrent of 19.54 ma/cm 2 compared to the system of black dye without cosensitization under standard am 1.5 sunlight. © 2013 md. akhtaruzzaman et al.