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Revealing the Correlation of Light Soaking Effect with Ion Migration in Perovskite Solar Cells …
Light soaking (LS) effect of perovskite solar cells (PSCs), i.e., the power conversion efficiency (PCE) increases under continuous light illumination (CLI), has attracted a lot of attention recently. Herein, it is reported that a strong LS effect occurs in the FA x MA 1-x PbI 3 (FAMA) PSC for its PCE increases from 7.5% to 20.5% under CLI.
Efficient and stable perovskite solar cells with regulated depletion …
Irreversible ion migration from the perovskite layer to the charge transport layer and metal electrodes causes irreversible efficiency loss in perovskite solar …
Extrinsic ion migration in perovskite solar cells
The migration of intrinsic ions (e.g., MA +, Pb 2+, I −) in organic–inorganic hybrid perovskites has received significant attention with respect to the critical roles of these ions in the hysteresis and degradation in perovskite solar cells (PSCs).Here, we demonstrate that extrinsic ions (e.g., Li +, H +, Na +), when used in the contact layers in PSCs, can migrate …
The role of ion migration, octahedral tilt, and the A-site ...
The role of ion migration, octahedral tilt, and the A-site ...
The physics of ion migration in perovskite solar cells: Insights into hysteresis, device performance, and characterization …
This paper uses familiar knowledge in solar cell device physics to explain the ion migration mechanism and its impacts under conditions of interests. It is shown that, when depletion layers contract such as in a forward current-voltage scan, tardy ionic charges can distort the perovskite bands hence reduce the net currents before they …
Mitigating ion migration in perovskite solar cells
Intrinsic ion migration in the metal halide perovskite (MHP) absorber layer and its interfaces seriously limits the device stability of perovskite solar cells (PSCs). Despite considerable efforts to mitigate the ion migration issue, it remains a formidable challenge in the commercialization of PSCs. Here, we provide a short review of the …
Ultrathin Nanosheets of Oxo‐functionalized Graphene Inhibit the Ion ...
The Cs-FA-MA triple-cation perovskite ion migration and local ion enrichment are crucial factors affecting the efficiency and stability of perovskite optoelectronic devices. In this work, we have demonstrated a new strategy to passivate the grain boundaries of perovskites, inhibiting the local migration of cations and halide ions by ...
The physics of ion migration in perovskite solar cells: Insights into …
This paper uses familiar knowledge in solar cell device physics to explain the ion migration mechanism and its impacts under conditions of interests. It is shown …
Overcoming ionic migration in perovskite solar cells through alkali …
The stability challenges in perovskite solar cells (PSCs) during operational conditions are a major bottleneck toward commercialization. The main process responsible for this instability is the migration of ionic species present in the well-known ABX 3 structure (A: organic cation, such as methylammonium MA +, B: metal cation such …
Advanced Materials
Despite rapid advancements in the photovoltaic efficiencies of perovskite solar cells (PSCs), their operational stability remains a significant challenge for commercialization. This instability mainly arises from light-induced halide ion migration and subsequent oxidation into iodine (I 2).
Ion Migration in Hybrid Perovskite Solar Cells | SpringerLink
Up to now, ion migration has received broad attention due to its significant impacts on OTP solar cells [] addition to the I-V hysteresis and switchable photovoltaic effect, ion migration might be the origin or important contributing factor of many other anomalous phenomena observed in OTP films and device, such as the diminish of …
In-situ photoisomerization of azobenzene to inhibit ion-migration …
Ion migration is a notorious problem in perovskite solar cells (PSCs) that severely mutilates device performance. Herein, a strategy to inhibit ion migration in situ is developed by using photoisomerization of azobenzene (AZO) to immobilize cations in the lattice. During the nucleation process, the photoisomerized cis-AZO reacts with FA +, MA …
Understanding the influence of cation and anion migration on perovskite ...
The impact of ion migration on PeLEDs is believed to be more significant than on solar cells 1,4,6,8 and, it has been realized that, due to the ionic nature of the perovskite materials, the ...
Ultrathin Nanosheets of Oxo-functionalized Graphene Inhibit the Ion Migration in Perovskite Solar Cells
The Cs-FA-MA triple-cation perovskite ion migration and local ion enrichment are crucial factors affecting the efficiency and stability of perovskite optoelectronic devices. In this work, we have demonstrated a new strategy to passivate the grain boundaries of perovskites, inhibiting the local migration of cations and halide ions by incorporating an …
Mobile iodides capture for highly photolysis
and reverse-bias-stable perovskite solar cells
Quantification of ion migration in CH3NH3PbI3 perovskite solar cells …
Ion migration in halide perovskite films leads to device degradation and impedes large scale commercial applications. We use transient ion-drift measurements to quantify activation energy, diffusion coefficient, and concentration of mobile ions in methylammonium lead triiodide (MAPbI3) perovskite solar cells
Verification and mitigation of ion migration in perovskite solar cells
The grain boundary 2D perovskite suppresses the ion migration in the perovskite films, which was correlated with reduced I-V hysteresis and enhanced activation energy for the ion migration. The energy barrier for the migration of ions was increased from 0.30 eV to 0.67 eV according to the DFT calculation [ Fig. 7(b) ].
Comprehensive study of anomalous hysteresis behavior in perovskite ...
There are only a few studies that considered the ion migration in perovskite-based solar cells in time-dependent modeling. In addition, to the best of our knowledge, the ions flux from the active ...
Correlations between Electrochemical Ion Migration and …
Ion migration is a solid-state electrochemical phenomenon widely observed in the family of halide perovskite materials, which is attributed to their intrinsically soft ionic crystal structures and mixed electronic–ionic conduction properties. Numerous studies in the literature have indicated that ion migration is the major cause of various …
Overcoming ionic migration in perovskite solar cells through alkali …
Introduction The stability challenges in perovskite solar cells (PSCs) during operational conditions are a major bottleneck toward commercialization. The main process responsible for this instability is the migration of ionic species present in the well-known ABX 3 structure (A: organic cation, such as methylammonium MA +, B: metal …
Benzoic acid inhibits intrinsic ion migration for efficient and stable ...
An efficient perovskite solar cell (PSC) has the following characteristics: (1) large perovskite grain size; (2) small ion migration; (3) low defect density states. Here, benzoic acid was employed as an additive to a perovskite solution to improve the thin film quality. Surprisingly, 1.0%-BA can implement all of these features.
Halide Ion Migration in Perovskite Nanocrystals and …
ConspectusThe optical and electronic properties of metal halide perovskites provide insight into the operation of solar cells as well as their long-term operational stability. Halide mobility in perovskite films is an important factor influencing solar cell performance. One can visualize halide ion migration through halide exchange between two nanocrystal …
Mitigating ion migration in perovskite solar cells
Figure 2. The consequences of intrinsic ion migration for each component layer in perovskite solar cells (PSCs). (A) Ion migration induced the formation of Pb0 and I 2 defects in a perovskite film. Reproduced, with permission, from …
Ion Migration and Accumulation in Halide Perovskite Solar Cells
In this review, ion migration and accumulation behaviors in perovskite solar cells are reviewed, which follow a logic of "freely-moving" ion formation, ion migration paths, ion
Impact of Buried Interface Texture on Compositional Stratification and Ion Migration in Perovskite Solar Cells …
2.2 Bias-Induced Ion Migration in Perovskite Solar Cells In order to investigate the impact of compositional stratification on the performance and stability of inverted (p–i–n) architecture PSCs, we utilized a device structure that is schematically depicted in Figure 3a
Ion-induced field screening as a dominant factor in perovskite solar cell …
Ion-induced field screening as a dominant factor in ...
Mitigating ion migration in perovskite solar cells
Intrinsic ion migration in the metal halide perovskite (MHP) absorber layer and its interfaces seriously limits the device stability of perovskite solar cells (PSCs). Despite considerable efforts to mitigate the ion migration issue, it remains a formidable challenge in the commercialization of PSCs. Here, we provide a short review of the …
Mitigating ion migration in perovskite solar cells
Strategies to mitigate ion migration are discussed, including engineering of perovskite composition, the incorporation of large organic cations, the introduction of ionic …
Extrinsic ion migration in perovskite solar cells
The migration of intrinsic ions (e.g., MA+, Pb2+, I−) in organic–inorganic hybrid perovskites has received significant attention with respect to the critical roles of these ions in the hysteresis and degradation in perovskite solar cells (PSCs). Here, we demonstrate that extrinsic ions (e.g., Li+, H+, Na+),
Extrinsic Ion Migration in Perovskite Solar Cells
The migration of intrinsic ions (e.g., MA +, Pb 2+, I-) in organic-inorganic hybrid perovskites has received significant attention with respect to the critical roles of these ions in the hysteresis and degradation in perovskite solar cells (PSCs).Here, we demonstrate that extrinsic ions (e.g., Li +, H +, Na +), when used in the contact layers in PSCs, can migrate …
Ion Migration in Organometal Trihalide Perovskite and Its Impact …
Among all those factors that affect the stability of perovskite solar cells, ion migration in OTPs may be intrinsic and cannot be taken away by device encapsulation. The presence of ion migration has received broad attention after the report of photocurrent hysteresis in OTP based solar cells.
Ion migration in perovskite solar cells
Download figure: Standard image The species of migrating ions are suggested to be either intrinsic ions, such as MA +, I −, within the perovskite, or extrinsic ions from interfacial layers, e.g. Li +, H +, Na +.Based on the first-principle calculation, Eames et al. simulated the corresponding activation energies of three conventional ion …