(001) faceted-Ga-TiO2 microtablet synthesis and its organic perovskite sensitized solar cells characterization.

Metal doping on the anatase TiO 2 produces many effect including narrowing the band gap and creates a mid-gap state for facile carrier transport in the structure. This paper reports the study on the effect of Ga doping on the photoactivity of TiO 2 microtablet in the perovskite sensitive solar cell (PSC). It was found that the Ga doping enhances the interfacial characteristic between TiO 2 and perovskite layer as well as the carrier transport in the device. The power conversion efficiency of the PSC device can be improved from 0.23 to 2.46% upon the doping of Ga in the TiO 2 microtablet system. Detailed preparation process and mechanism of the device performance improvement will be discussed. [ABSTRACT FROM AUTHOR]