Influence of Limonene from Orange Peel in Poly(Ethylene Oxide)PEO/I/I3 Based Nanocrystalline Dye-Sensitized Solar Cell

摘要

A novel method of introducing a Limonene obtained from orange fruit skin(Lim)is successfully incorporated in Poly(ethylene oxide)(PEO)with KI and I2 redox couple and employed in a dye-sensitized solar cell(DSSC).Scanning electron microscopy(SEM),X-ray diffraction(XRD)Ultra violetvisible spectrum(UV-Visible),Fourier transform infrared spectrum(FTIR),Thermo gravimetric analysis(TGA)and electrochemical impedance spectroscopy(EIS)studies described the influence of Lim on ionic conductivity and the photovoltaic properties of the PEO/KI/I2 system.The temperature-dependent conduction mechanism of ionic motion and ionic interactions as a function of frequency has been studied.The dielectric behavior of the electrolyte samples were carried out over a wide frequency range(~1 MHz to 20 Hz)at various temperatures.A DSSC system fabricated with the prepared PEO/KI/I2/Lim polymer electrolyte facilitating a fill factor of 0.52,a shortcircuit current density(J_(sc))of 14.1 mAcm~(-2)and an open-circuit voltage(V_(oc))of 795 mV yields the achieved solar to electrical energy conversion efficiency of 5.83% under irradiation of 1 sun(100 mWcm~(-2)).The compound Lim thus effectively enhanced the ionic conductivity of the composite polymer electrolyte and hence the photovoltaic performance of the fabricated DSSC.