Research Of Polymer Solar Cell Devices Preparation

Polymer solar cells, which are simple manufacture, low cost, and able to be curly and prepared by the advantages of a large area, has broad application prospects in the field of photovoltaic cells. In this paper, the development of solar cells history, current situation and existing problems are discussed, and introduce the relevant theory of polymer solar cells.In order to obtain relatively high energy conversion efficiency, the modified electrode layer is added in the single-storey structure of solar cells in the experiment, typically. that is, the hole transport layer is added between the anode and the active layer and the electron transport layer is added between the cathode and the active layer. Here, PEDOT: PSS(hole transport layer) and LiF(electron transport layer) are used. In the experiment, it is found that the thickness of hole transport layer directly affects the different energy conversion efficiency of the battery. When the PEDOT: PSS with a thickness of 50 nm, the best energy conversion efficiency of 1.12%. In addition, whether having the electron transport layer have a significant effect on the energy conversion efficiency of the device: the efficiency increased to 0.513 percent from 0.595 percent, as the layer exists.A new anode material which is a metal grid compositing of silver, copper and nickel is reported. Using it as anode, P3HT(poly(3-hexylthiophene)): PCBM ([6,6]-phenylC61butyric -acidmethylester) layer as active layer,flexible polymer solar cells are manufactured by spin-coating . Five different structures of solar cell devices are made by using the traditional ITO(Indium tin oxide)anode material or the new anode material. Via contrast, we find that the performances of the new anode material device has been greatly improved, open circuit voltage of 0.54V, short circuit current density of 5.39 mA/cm2, and power conversion efficiency (PCE) of 2.060% were achieved under 50 mw/cm2 air-mass 1.5 solar simulator illumination.