Key Words:RECOMBINATION; EFFICIENCY; IMPEDANCE

Abstract:In this paper, we propose a new kind of nanostructure solar cell involving perovskite CH3NH3PbI2Cl and metal-oxide semiconductor TiO2. Taking advantage of the promising properties of this solution-processed perovskite material such as good light absorption and ambipolar transport of charge carriers, we choose CH3NH3PbI2Cl as both a light absorber for TiO2 nanoparticle sensitization and hole transport material, which helps to constitute a solid-state sensitized solar cell with much simpler construction. Specifically, the cell fabrication and characterization are reported; the analysis based on small-signal electrochemical measurements is in particular provided, in order to investigate internal mechanisms of this photovoltaic device, mainly including charge accumulation, recombination and transport through it.

Volume:61

Issue:4

Translation or Not:no