title: Novel biopolymer gel electrolyte for dye-sensitized solar cell application.
abstract: We report a new biopolymer electrolyte for dye sensitized solar cell application. To develop polymer electrolyte, potassium iodide have been added in agarose biopolymer matrix and characterized using various techniques like complex impedance spectroscopy, Infrared spectroscopy (IR), X-ray diffraction (XRD), scanning electron microscopy (SEM). Complex impedance spectroscopy shows many folds enhancement in ionic conductivity (σ) by salt doping and conductivity maxima was obtained near 60:40 composition. Infrared spectroscopy confirms the formation of composite nature. XRD revels the reduction of crystallinity by salt doping as well affirms the composite nature. Scanning electron microscopy (SEM) shows reduction in crystallinity of gel matrix by salt doping which is a known favorable condition for ionic conductivity enhancement. To further affirm the conductivity enhancement in the gel electrolyte system a theoretical hopping model is also described in details. A DSSC has been developed using maximum electrical conductivity film which shows 0.54% efficiency at 1 sun condition.
authors.affiliation: Material Research Laboratory, School of Engineering and Technology, Sharda University, Greater Noida 201 310, India.
authors.forename: Rahul
authors.initials: R
authors.lastname: Singh
authors.forename: Nitin A
authors.initials: NA
authors.lastname: Jadhav
authors.forename: S
authors.initials: S
authors.lastname: Majumder
authors.forename: B
authors.initials: B
authors.lastname: Bhattacharya
authors.forename: Pramod K
authors.initials: PK
authors.lastname: Singh
mesh_terms: D001704:Biopolymers; D004396:Coloring Agents / Q000737:chemistry; D004553:Electric Conductivity; D011211:Electric Power Supplies; D004573:Electrolytes / Q000737:chemistry*; D005782:Gels / Q000737:chemistry*; D008855:Microscopy, Electron, Scanning; D011193:Potassium Iodide / Q000737:chemistry; D012685:Sepharose / Q000737:chemistry*; D012993:Solar Energy; D013055:Spectrophotometry, Infrared; D014961:X-Ray Diffraction
chemical_list: D001704:Biopolymers; D004396:Coloring Agents; D004573:Electrolytes; D005782:Gels; D011193:Potassium Iodide; D012685:Sepharose