Synthesis and Characterization of Hybrid Nanostructures Based Natural Dye Sensitized Solar Cell

Abstract

Dye-sensitized solar cells (DSSCs) are fabricated with perovskite-type Lithium barium doped cerium oxide (LiBaCeO₄) as the photoelectrode materials. The nano particles are prepared by solution combustion technique using glycine as a fuel. To optimize the photoelectric activities of electrode materials hybrid triplex nanoparticles were synthesized. The obtained nanoparticles are characterized using scanning electron microscopy (SEM) for morphological study, UV-visible spectroscopy for UV absorption range, X-ray diffraction (XRD) study to know the formation of a crystalline nature, The FTIR spectroscopy study identifies the functional groups. The triplex LiBaCeO₄ nanoparticles as electrode material for DSSCs performances and photo electric properties are investigated by using surface photo voltage spectroscopy and The SEM and XRD results shows that nanoparticles are uniformly distributed and the obtained particles size lies in the range 37- 59 nm. The UV-visible spectrum exhibited a well-defined absorption steep peak at 220 nm and the absorption peak also canbe observed in the visible region at 515 nm after the particles are adsorbed with dye molecules. The band gap energy is found to be 3.29 eV near short wave UV-visible region. The I-V results of LiBaCeO₄ nano particles with pomegranate dye sensitized solar cell gives short circuit current density of J_sc = 2mA cm^-2 and open circuit voltage of V_oc= 0.67 V and corresponding solar to electrical energy conversion efficiency of 5.4% is obtained.