Electron/hole blocking layers as ionic blocking layers in perovskite solar cells

Abstract

Ion diffusion into the BLs changes the device from symmetric-intrinsic to asymmetric-doped with all internal parameters changed.

Perovskite ionics – elucidating degradation mechanisms in perovskite solar cells via device modelling and iodine chemistry

“…Here, the literature is divided into those considering the motion within the crystal lattice, described as vacancy transport, or outside the crystal lattice, described as interstitial motion. [26][27][28][29][30][31] As the supplementary outlines, we do not distinguish between the two types of iodide motion within the semiconductor device model framework.…”

Persistent Ion Accumulation at Interfaces Improves the Performance of Perovskite Solar Cells

“…To calculate the energy band diagram, we performed a device simulation where we accounted for the motion of iodides in the perovskite layer and assumed that the ions have not penetrated the blocking layers. , The material parameters are collated in Table S2 in the Supporting Information. Figure a–c shows the calculated energy band diagram, and Figure d–f shows the corresponding iodide distribution.…”

Spatial Distribution of Solar Cell Parameters in Multigrain Halide-Perovskite Films: A Device Model Perspective

“…Since the groundbreaking studies demonstrating the potential of perovskite materials for photovoltaics, − the field has advanced rapidly with current record efficiencies exceeding 25% within less than a decade . Besides the efficiency benchmarking, there have also been advances in understanding the chemistry, physics, and device chemical physics of these cells both from a theoretical and experimental side. − The grain-scale microstructure of perovskite thin films has also been studied and optimized, with particular attention on increasing the average grain size , but with little focus on the influence of the distribution of sizes.…”