Synthesis and characterization of ambient-processed all-inorganic perovskite CsPbBr2Cl micro-crystals and rods

First‐Principle Density Functional Theory‐Derived Nonleaded KSn1−xGexI3‐Based Perovskite Solar Cells: A Theoretical Study

“…[ 70 ] The previously published analysis demonstrated that as thickness grows, the device's PCE advances. [ 57 ] We observed that the absorber's 650 nm thickness supports a PCE of 8.89%, as shown in contour Figure 8 f. The contour diagram (Figure 8c–f) depicts the performances V oc , J sc , FF, and PCE obtained from the device analysis and the x ‐axis and y ‐axis represent the thickness and defect variation of KSn 0.5 Ge 0.5 I 3 .…”

“…[ 27 ] The band offset remarkably affected the charge transportation, extraction, and interfacial recombination in PSCs. [ 57 ] The density of states (DOS) plots ( Figure 3 a) represent the KSnI 3 CBM and VBM at −4.66 and −6.96 eV. The KSn 0.5 Ge 0.5 I 3 (with x = 0.5 concentration or 50% of Sn replaced by Ge) CBM and VBM shifted toward the higher energies −4.58 and −6.62 eV, respectively, in contrast to KSnI 3 as depicted in Figure 3b.…”

“…[ 6 ] In order to stop the reverse flow of electrons, CBO must not exceed 0.2 eV because a significantly higher CBO leads to disruption between energy levels that deteriorates the rate of electric production. [ 57 ] ETL‐SnO 2 and HTL‐Spiro‐OMeTAD extract the photogenerated electrons and holes, respectively. The electrons and holes dissociated toward the contacts FTO and Au, accordingly.…”