Efficient dye-sensitized solar cells based on CNTs and Zr-doped TiO2 nanoparticles

摘要: Abstract The light scattering, harvesting and adsorption effects in dye-sensitized solar cells (DSSCs) are studied by preparation of coated carbon nanotubes (CNTs) with TiO 2 Zr-doped nanoparticles the forms mono- double-layer cells. X-ray diffraction (XRD) analysis reveals that phase composition electrode is a mixture anatase rutile phases major content, whereas it same content for CNTs . Furthermore, average crystallite size slightly decreased Zr introduction. Field emission scanning electron microscope (FE-SEM) images show porosity electrodes higher than undoped electrode, enhancing dye adsorption. UV–visible spectroscopy absorption onset shifted to longer wavelength (the red-shift) comparison electrode. Moreover, band gap energy introduction, absorption. It found injection monolayer improved introduction 0.025 mol% Zr, resulted enhancement its power conversion efficiency (PCE) up 6.81% compared 6.17% pure transport scattering enhanced incorporation 0.025 wt% over-layer double layer Therefore, cell composed as under-layer mixtures these 0.025 wt% shows highest PCE 8.19%.