SILAR Sensitization as an Effective Method for Making Efficient Quantum Dot Sensitized Solar Cells

CdSe quantum dots were in situ deposited on various structures of TiO2 photoanode by successive ionic layer adsorption and reaction (SILAR). Various sensitized TiO2 structures were integrated as a photoanode in order to make quantum dot sensitized solar cells. High power conversion efficiency was obtained; 2.89 % (Voc=524 mV, Jsc=9.78 mA/cm2, FF=0.56) for the cells sensitized by SILAR method. Also, all the cells showed rather high efficiencies (over 2.65%) regardless of their structure. Here the simple SILAR deposition was performed at room temperature, which introduces it as a cost effective method for large scale production. Regarding the considerable efficiencies obtained for various structures, pointed out that SILAR deposition can be introduced as an effective method for making efficient quantum dot sensitized solar cells.