Research On High Efficieny And Stable Polymer Solar Cells

Polymer solar cells have attracted great interest from researchers both at home and abroad in recent years,because of their excellent characteristics such as solution processing,green environmental protection,low production cost.Through different aspects of research and exploration,considerable progress has been made in synthesis of the new receptor materials,design different structural device,interface modification,active layer optimization.In order to improve the energy conversion efficiency of the polymer solar cells,Au decahedra nanoparticles were doped in the anode modification layer of the device to improve the absorption of the active layer.Second,for improving the stability of the device,metal chelate cathode modified layer of the reverse structure of polymer solar cells were fabrication.1:Doping Au decahedra nanoparticles in Poly（3,4-ethylenedioxythiophene）: poly（4-styrenesulfonate）（PEDOT: PSS）,the high-efficiency plasmon polymer solar cell based on P3HT: PC₆₀BM and PBDT-TS1: PC₇₀BM high-efficiency plasmon was fabricated successfully.In a wide range of wavelengths,the light absorption of the cells has been significantly improved,making the polymer solar cell photocurrent greatly increasing.The efficiency of the polymer cells based on the PBTT-TS1: PC₇₀BM system reached 10.29%,which was increased by 28% compared with the reference device.The efficiency of the polymer battery based on the P3HT: PC₆₀BM system was 4.11% and 15% higher than that of the reference device.Experimental results narrowband or broadband organic polymer battery,doped with decahedral Au can make the device performance to improve.2: A soluble solution of zirconium acetylacetonate（Zr Acac）was used as the cathodic modification layer of the reverse device.A certain concentration of zirconium acetylacetonate ethanol solution was directly spin coated on the ITO electrode at room temperature without further annealing at high temperature Or other subsequent processing.As the electron transport layer,the zirconium acetylacetonate is very thin and absorbs very little light,thus the low loss of light reaches the active layer.The results show using zirconyl acetylacetonate in reverse structure device based on the PBDT-TS1: PC₇₀BM system,the efficiency of the device reaches 8.71%,which is better than that of the forward device of the same kind of active layer.The modification layer Zr Acac and MoO₃ are not easily corroded by water and oxidated by oxygen,so the stability of the reverse device is good.