Abstract
A facile and rapid synthesis of randomly distributed mesoporous anatase TiO2 nanoparticles for DSSC application using microwave method is reported here. Nanocrystalline anatase TiO2 is achieved by a sol microwave power strategy, where low microwave power intensity (300 and 600W) for 5min irradiation has been implemented. As synthesized anatase TiO2 nanoparticles have been characterized by a range of different techniques such as XRD, SEM, TEM and BET surface area analysis. These anatase TiO2 nanoparticles possessed high surface area up to 210m2g−1. Nanocrystalline nature and anatase phase purity were revealed from XRD. SEM studies have shown that the anatase TiO2 powder synthesized were appeared as spherical aggregates and the nano size of single particles (∼10nm) were confirmed by TEM analysis. These anatase TiO2 nanoparticles were successfully employed as the working electrode for DSSC and a systematic investigation of the performance of DSSC constructed with standard N719 dye with conventional iodide/triiodide (I−/I3−) has demonstrated an efficiency of 6.6% under 100% sunlight with 55% of IPCE.
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