Light absorption enhancement by embedding submicron scattering TiO₂nanoparticles in perovskite solar cells

Abstract

With optimized amount of the embedded scattering NPs, obviousJscincrement and consequent PCE improvement over 5% can be accomplished when comparing with the regular mesostructured PSCs.

Resonant silicon nanoparticles for enhancement of light absorption and photoluminescence from hybrid perovskite films and metasurfaces

“…Our modeling based on Mie theory proves this assumption (see Fig. S2-S4 in the ESI †), revealing the advantage of silicon over widely used titanium dioxide (TiO 2 with n ≈ 2.5-2.7) nanoparticles, 40,41 where optical contrast with the perovskite is negligibly small. In order to rigorously study the optical properties of Si NPs on top and inside the perovskite film, we carried out numerical simulations using Lumerical FDTD Solutions software.…”

ABX3 Perovskites for Tandem Solar Cells

“…In the particular case of a two-terminal device, it is not possible to make use of the light emitted as a result of radiative recombination in the layer between subcells. In all cases, optical strategies such as photonic crystals, 130-132 metamaterials, 133 surface textures, 134,135 light scatterers, 136 or metallic nanostructures exhibiting plasmonic resonances 117 can be used to provide the device with efficient photon delivery. Also, photonic architectures could be considered if accurate control of the angular dependence of the absorbed light is needed.…”

Materials chemistry approaches to the control of the optical features of perovskite solar cells

“…Dielectric sub-micron particles have been embedded in the mesoporous TiO 2 layer inducing an increase of the diffusive scattering and also enhancement of the light absorbed in the perovskite layer in the 550 nm < l < 750 nm range. 133 However, this eld remains almost unexplored and more exhaustive theoretical models and calculations are needed in order to clarify essential aspects of particle scattering and their effect on the near and far electromagnetic eld. 134 Metallic nanoparticles are also proposed to be included either in the active layer or in the secondary layers of the PSC.…”