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Deposition of hybrid organic-inorganic perovskite films at low temperature
Last modified: 2018-07-23
Abstract
In this work, we report methylammonium lead triode (CH3NH3PbI3) thin films prepared by two-step deposition process (spin and Dip-coating).This study deals with the realization of perovskite thin films and the investigation of speed centrifugation effect on the films properties. The analysis by X-ray diffraction confirmed the formation of tetragonal perovskite structure with the apparition of secondary phases. Furthermore, the UV- Visible spectroscopy analysis showed that the deposited CH3NH3PbI3 films have a high absorption coefficient greater than 104 cm-2 in the visible range and optimal direct gap energy equal to 1.5 eV which is suitable for photovoltaic application. The electrical characterization shows that peroveskite thin film has high resistivity value which refers to the porosity of the film.