Study On Organic Fiber Solar Cell

In this paper,a conventional poly?ethylene terephthalate??PET?textile fiber with the diameter of 35?m was used as base material to construct the ITO-Ag composite conductive layer and ordered ZnO rods array on its surface and a kind of organic fiber solar cells was carried out by using this structure.The layer of silver plating system mainly adopts the method of ITO sol auxiliary plating.The preparation of poly?ethylene terephthalate??PET?conductive fiber with conducting bilayers is reported here.A layer of indium tin oxide?ITO?through dip-coating and thermal annealing is precipitated on degreased and roughened PET fibers.Then the surface of the fibers is sensitized by SnCl₂ solution followed by typical silver mirror reaction.Based on fiber impregnated in ITO sol regulation of time and the number of coated ITO sol determines the dipping time is 3 min,coated 3 times will be able to get the best silver plated samples.Observed using scanning electron microscope?SEM?shows that composite conductive layer on the surface of the silver layer formation,uniform particles.Energy dispersive X-ray spectroscopy?EDS?test showed that the fiber surface contains only three elements,C,O,Ag and the capacity of silver element can reach 87.44 wt%,indicating that silver layer not only has high continuity at the same time also has a very high purity.The mechanical properties test of fibers show that the impregnation process and silver plating process will reduce the strength of fiber,but the main reason for decline in intensity of the fibers is the heat treatment process of gelation Conductive properties of the fiber were characterized by resistivity test,and the dipping time is 3 min and coated with three times will be able to get the best electrical conductivity,the resistivity can be as low as 0.23 m?·cm.The growth control of ZnO rods array on the silver fiber surface mainly depend on the method of low temperature water bath.Silver coated fibers were in growing point processing,cold water bath treatment and static treatment.Orthogonal experiments were used to analyze the influence of the Zn?NO₃?₂ concentration in the solution,the concentration ratio of six-methyl-tetramine and Zn?NO₃?₂,the volume of liquid,the temperature of growth,the length of growth and the length of stand time in ZnO rods growing in detail.Combined with the images of the monodisperse sample and its high resolution morphology by transmission electron microscope?TEM?we can see the length of the ZnO rod is 1.5?m,the width of that is 0.3?m and the cell constant is about 0.3249 nm which identified the sample as ZnO crystals.By analyzing the different conditions of the observation of scanning electron microscope?SEM?can be seen that ZnO arrays can be improved in the neat arrangement on the surface of fiber through growing point processing?the growth of ZnO can be improved in both radial and axial by increasing the con centration of Zn?NO₃?₂?the ZnO arrays can be more uniform and tidy by include the concentration ratio of Six-methyl-tetramine and Zn?NO₃?₂?the volume of growth liquid is best for 30 ml?if the growth temperature is higher than 85 ^o C,ZnO priority axial growth and if it is less than 85 ^o C,growth at radial will be the priority?prolonged the length of growth can promote the growth of ZnO along the current trend,but not change the direction and the speed?prolonged the length of stand treatment helps to improve the density and neat degrees of ZnO rods.The resulting organic fiber solar cells use ITO glass or ITO film as the positive electrode,Aluminum foil as battery anode.Through the test obtained the open circuit voltage of the battery is up to 0.68 V,the maximum short-circuit current was 0.05 mA,the best filling factor was 0.38,and the conversion efficiency is 0.01%.