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The Performance of alloyed (CdS0.33Se0.67) quantum dots-sensitized TiO2 solar cell
Abdallah S.1,2
1Department of Mathematical and Physical Engineering, Faculty of Engineering (Shoubra) Benha University, Cairo, Egypt
2Department of Physics, Faculty of Science, Taif University, Taif, Saudi Arabia
Поступила в редакцию: 11 сентября 2013 г.
Выставление онлайн: 19 сентября 2014 г.
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The performance of alloyed CdS0.33Se0.67 quantum dots-sensitized solar cells (QDSSCs) is studied. Fluorine doped Tin Oxide (FTO) substrates were coated with 20 nm-diameter TiO2 nanoparticles (NPs). Presynthesized CdS0.33Se0.67 quantum dots (QDs) (radius 3.1 nm) were deposited onto TiO2 nanoparticles (NPs) using direct adsorption (DA) method, by dipping for different times at ambient conditions. The FTO counter electrodes were coated with platinum, while the electrolyte containing I-/I-3 redox species was sandwiched between the two electrodes. The characteristic parameters of the assembled QDSSCs were measured at different dipping times, under AM 1.5 sun illuminations. The maximum values of short circuit current density (Jsc) and conversion efficiency (eta) are 1.115 mA/cm2 and 0.25% respectively, corresponding 6 h dipping time. Furthermore, the Jsc increases linearly with increasing the intensities of the sun light which indicates the linear response of the assembled cells.
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