Synthesis and numerical simulation of formamidinium-based perovskite solar cells: a predictable device performance at NIS-Egypt

Abstract

Formamidinium lead triiodide (δ-FAPbI3)-based perovskite solar cells showed remarkable potential as light harvesters for thin-film photovoltaics. Herein, the mechanochemical synthesis of δ-FAPbI3, MAPbI3, and mixed-cation FA1−xMAxPbI3 with (x = 0.3, 0.5, and 0.7) perovskite materials were prepared as a novel green chemistry method for scaling up production. Crystallinity, phase identification, thermal stability, optoelectronic properties, and nanoscale composition are discussed. The results demonstrated that the prepared mixed-cation samples are enhanced in the visible absorption region and are consistent with previous works. The crystal structure of δ-FAPbI3 was altered to a cubic structure due to the change in FA-cation. Moreover, the performance of $$\delta$$ δ -FA-based perovskites was investigated using the Solar Cell Capacitance Simulator (SCAPS-1D) software. The validity of the device simulation was confirmed by comparing it to real-world devices. The photovoltaic characteristics and impact of absorber thickness on device performance were explained. The $$\delta$$ δ -FA-based solar cell with a 50% MA-doped molar ratio shows a better performance with an efficiency of 26.22% compared to 8.43% for δ-FAPbI3. The outcome results of this work confirm the beneficial effect of mixed cations on device operation and advance our knowledge of the numerical optimization of perovskite-based solar cells.

Heterojunctions of Mercury Selenide Quantum Dots and Halide Perovskites with High Lattice Matching and Their Photodetection Properties

“…Furthermore, the Hg-Se bond peaks shifted towards higher binding energy values of 100.5 eV and 104.6 eV following exchange, indicating an influence from the formation of the perovskite matrix on these bonds. Figure 5c illustrates the post-ligand exchange delineation of the I 3d orbital signal, revealing peak positions at 619.2 eV and 630.5 eV corresponding to the I-Pb and I-Hg bonds, respectively [25,26]. This finding is in concordance with the Hg-I bond separation, as inferred from the Hg 4f orbital signal, thus affirming the structural integrity of the bonds.…”

Using scalable computer vision to automate high-throughput semiconductor characterization

“…By assessing the gradated shifts in both XRD and XPS peaks, the composition mapping can be validated. For crystal structure validation, the crystal lattice size of MAPbI 3 is smaller than that of FAPbI 3 47 , thus, we expect the XRD peaks of the MA-rich deposits to shift toward higher angles 54 . In Fig.…”

“…S-15 a). For elemental validation, the A-site MA and FA cations are distinguished by the presence of a carbon–nitrogen double bond (C=N), where FA contains a C=N bond while MA contains only a C–N single bond 54 . In the high-resolution XPS scans, shown in Fig.…”

A study on light sensitization behavior in (Mph)2CuCl4 low-dimensional hybrid material with tetrahedral units and extended absorption up to the NIR region

“…The nonuniformity of (Mph) 2 CuCl 4 thin film prompted to take DRS. The Kubelka-Munk (KM) function, which is derived from the DRS of (Mph) 2 CuCl 4 , is plotted against the incident energy in eV in figure 3(a), depicting the Kubelka-Munk plot of (Mph) 2 CuCl 4 for direct band gap materials [38]. A line drawn from the point exhibits a sharp decline in the KM function intersected at 1.44 eV, designated band gap(E g ).…”