Optical absorption modeling of bilayer photoanode based on Cu@TiO2 plasmonic dye sensitized solar cells towards photovoltaic applications

Abstract

A periodic array of core-shell Cu@TiO 2 nanoparticle for plasmonic dye sensitized solar cells (DSSCs) in the wavelength range between 350-750 nm was studied. The size of copper nanospheres was 70 nm while the length and diameter of the copper nanorods were 100 and 10 nm, respectively. The UV-Visible absorption spectrum showed that the photo-anode based copper added TiO 2 has 29.3% absorption capability compared with copper-free TiO 2 . TiO 2 with shell thickness of 5 nm coated copper exhibited the absorption e ciency of 71.9%, while short circuit current density of 17.52 mA cm − 2 for Ci@TiO 2 photoanode. This was attributed to a strong localized electric eld around ultra-thin TiO 2 -coated copper nanospheres. The UV-Visible results of different geometries indicated that the spherical-shaped Cu@TiO 2 nanoparticles induced the high absorption capability of 3.4% compared to rod-shaped Cu@TiO 2 nanoparticles. The hybrid nanorods/nanospheres bilayer photo-anode showed the high optical UV-Visible absorption of 11.42% as compared with nanospheres/nanorods, ascribed to the large surface area for dye-loading excellent light scattering.

Utilizing Density Functional Theory and SCAPS Simulations for Modeling High‐Performance MASnI3‐Based Perovskite Solar Cells

“…These attributes include a narrow bandgap, remarkable absorption capacity, superior carrier mobility, elongated diffusion range, and low excitons binding energy. [1][2][3][4][5][6] Perovskite-based solar cells are the most prospective third-generation photovoltaic technology, rapidly surpassing the efficiencies of many emerging and commercial photovoltaics, such as silicon solar cells, [7][8][9][10] dye-sensitized solar cells, [11][12][13][14][15][16] and organic solar cells. [17][18][19] Miyasaka's initial report on PSCs emerged in 2009, achieving an efficiency of 3.8%.…”