Efficiency Improvement of MAPbI3 Perovskite Solar Cells Based on a CsPbBr3 Quantum Dot/Au Nanoparticle Composite Plasmonic Light-Harvesting Layer

Abstract

We demonstrate a method to enhance the power conversion efficiency (PCE) of MAPbI3 perovskite solar cells through localized surface plasmon (LSP) coupling with gold nanoparticles:CsPbBr3 hybrid perovskite quantum dots (AuNPs:QD-CsPbBr3). The plasmonic AuNPs:QD-CsPbBr3 possess the features of high light-harvesting capacity and fast charge transfer through the LSP resonance effect, thus improving the short-circuit current density and the fill factor. Compared to the original device without Au NPs, a 27.8% enhancement in PCE of plasmonic AuNPs:QD-CsPbBr3/MAPbI3 perovskite solar cells was achieved upon 120 μL Au NP solution doping. This improvement can be attributed to the formation of surface plasmon resonance and light scattering effects in Au NPs embedded in QD-CsPbBr3, resulting in improved light absorption due to plasmonic nanoparticles.

Exploring the Effect of Lewis-Base Additives on the Performance and Stability of Mesoscopic Carbon-Electrode Perovskite Solar Cells

“…This effect is proportional to the U content up to 15%, where an increased absorbance in the lower-wavelength region is clearly observed, as a result of the improved film quality . An overall enhancement in the light-harvesting ability of the perovskite films is also identified, in the wavelength range of 350–700 nm, which will help improve the PCE . This significant enhancement can be related and attributed to a better crystal quality in the smoother and pinhole and crack-free films that the U additive produces, as also confirmed by the SEM pictures.…”

“…44 An overall enhancement in the light-harvesting ability of the perovskite films is also identified, in the wavelength range of 350−700 nm, which will help improve the PCE. 45 This significant enhancement can be related and attributed to a better crystal quality in the smoother and pinhole and crackfree films that the U additive produces, as also confirmed by the SEM pictures. With a further increase in the U content, the opposite effect starts to occur and the spectra resemble the one of the reference device.…”

Near‐Band‐Edge Enhancement in Perovskite Solar Cells via Tunable Surface Plasmons

“…[ 11 ] The near‐field EM enhancement in the semiconductor near the plasmonic particles has generally been proved theoretically by the Mie theory calculation and finite‐difference time‐domain (FDTD) simulations. [ 12 ] Moreover, the incorporation of plasmonic particles is also claimed to change the carrier dynamics by reducing exciton binding energy, [ 13 ] suppressing the electron‐hole recombination, [ 10a,14 ] and increasing the carrier collection efficiency at the interface. [ 8c ] Nevertheless, the potential adverse effects of integrating plasmonic particles are non‐negligible, posing challenges against the plasmonic enhancement.…”

The Effects of Temperature on the Growth of a Lead-Free Perovskite-Like (CH3NH3)3Sb2Br9 Single Crystal for An MSM Photodetector Application

“…Due to the advantages of low exciton binding energy, high carrier mobility, long carrier diffusion lengths, wide light absorption range, high light absorption, and tunable optical band gap suitable for solar spectrum, they have quickly attracted widespread attention in the field of high-efficiency photovoltaic cells [ 1 , 2 , 3 , 4 , 5 ]. In recent years, the power conversion efficiency (PCE) of photovoltaic cells made of Pb-based organic–inorganic composite perovskite materials has increased from less than 5% to more than 25.5% [ 6 , 7 , 8 , 9 ]. At the same time, they have shown great application potential in the fields of photodetectors [ 10 , 11 ] and light-emitting diodes (LEDs) [ 12 , 13 ], but the above application research was mostly limited to polycrystalline thin film materials; there were few reports on the preparation and application of single-crystal materials.…”