Preparation Of Organic-inorganic Hybrid Perovskite And Application In Solar Cells

Organic-inorganic hybrid perovskite material is a novel molecular material that is made up of organic and inorganic components bonded via self-assembly effect. Organic- inorganic hybrid perovskite material can be prepared by using many ways and can exhibit unique properties, which have a very broad application prospects such as perovskite solar cell device, excitons devices and electroluminescent devices. In this paper, organic-inorganic hybrid perovskite had been prepared by solution method or cool solution method auxiliary pulsed electromagnetic field. The crystal structures, thermal stability, light absorption capacity and electrical properties had been characterized by using X-ray diffraction, thermal gravimetric analysis, UV-visible spectrophotometer, Hall Effect measurement. These organic-inorganic hybrid perovskite materials as light absorption layer assemble solar cells.The effect of different halogen elements on perovskite CH3NH3PbX3 material properties was studied. The results show thatthe lattice spacing increases, the diffraction peaks shift to large-angle and UV-visible spectroscopy appeared red shift with the increase of bromine content. Pure bromine perovskite CH3NH3PbBr3 has the highest stable with decomposition temperature of 375℃.Different organic impact on perovskite CnH2n+1NH3PbBr3 material performance were sudied. It shows that two organic perovskite have good crystallinity with periodic layered structure. Methylamine perovskite CH3NH3 Pb Br3 is more stable than butylamine perovskite C4H9NH3 Pb Br3 and the light absorption ability of CH3NH3PbBr3 is better than that of C4H9NH3 Pb Br3.The effect of inorganic on perovskite CH3NH3PbxSn1-xBr3 material was sudied. The results show that both perovskite CH3NH3SnBr3 and perovskite CH3NH3PbBr3 have typical two-dimensional layered structure. Thermal stability decreases and light absorption ability increases with the increase of tin element content,.The effect of pulse voltages on perovskite CH3NH3PbI3 material was studied. It shows that the pulse voltage has an impact on the optical and electrical properties of perovskite CH3NH3PbI3. It is confirmed that all of perovskite CH3NH3PbI3 material are P-type semiconductor material.The perovskite solar cells were studied by using different kinds of perovskite materials. The results show that the photoelectric conversion efficiency decreases with the increase in bromine content. Perovskite CH3NH3PbI3 material was comfirmed as best light absorbing layer. The best solar cell has maximum cell efficiency of 1.38%, open circuit voltage of 1.05 V and a short circuit current of 1.89mA/cm2.