Role of antisolvent temperature and quaternary ammonium cation-based ionic liquid engineering in the performance of perovskite solar cells processed under air ambient conditions

Ghosh, Subrata; Boro, Binita; Porwal, Shivam; Mishra, Snehangshu; Singh, Trilok

doi:10.1039/d3ya00065f

Cited by 9 publications

(1 citation statement)

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“…This is attributed to their exceptional characteristics, which encompass a suitable direct bandgap, relatively high optical absorption, defect tolerance, and efficacious properties for transporting charge carriers. 1–11 The power conversion efficiency (PCE) of perovskite solar cells (PSCs) has significantly increased, with PCE for single junction cells approaching 26.08% due to advancements in material processing and device optimization. 12 These solar cells exhibit a high PCE because of a suitable direct bandgap (∼1.48 eV) that enables efficient photon absorption.…”

Section: Introductionmentioning

confidence: 99%

Stress-induced stabilization of the photoactive FAPbI₃ phase under ambient conditions without using an additive approach

Porwal,

Bansal,

Ghosh

et al. 2024

Energy Adv.

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Section: Introductionmentioning

confidence: 99%

Stress-induced stabilization of the photoactive FAPbI₃ phase under ambient conditions without using an additive approach

Porwal,

Bansal,

Ghosh

et al. 2024

Energy Adv.

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Effect of Interfacial Ionic Defects in Perovskite Solar Cells and their Mitigation Mechanism: A Comprehensive Theoretical Analysis with Experimental Validation

Porwal,

Bansal,

Dey

et al. 2024

Advcd Theory and Sims

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Interfacial ionic defects in perovskite solar cells (PSCs) significantly influence the efficiency and long‐term stability. In this study, primarily simulation‐assisted analyses are conducted to explore the capacitive effect of these defects on the performance of PSCs through impedance analysis. Simulated data indicate a decrease in capacitance with increasing frequency, leading to a higher built‐in potential (ΔVbi = 150 mV). Moreover, an increase in capacitance with increasing light intensity is observed. Additionally, reducing the ionic defect concentration at the interfaces (from 1019 to 1016 cm−3) results in more significant band bending and a higher Vbi. Potential solutions to mitigate interfacial ionic defects, including doping at transport layer interfaces are proposed. Doping at both interfaces introduces an energy spike (valence band offset) of 0.21 eV and a cliff (conduction band offset) of 0.16 eV, respectively, for holes and electrons, leading to an improvement in the open circuit voltage (VOC). Finally, experimental results demonstrate a notable enhancement in VOC of 0.04 V with the introduction of Li+ doping at the electron transport layer/perovskite interface. These findings provide essential perceptions for effectively mitigating the effect of interfacial ionic defects on the performance of PSCs and enhance their overall performance.

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Thermal Stability Analysis of Formamidinium–Cesium‐Based Lead Halide Perovskite Solar Cells Fabricated under Air Ambient Conditions

Boro,

Mishra,

Singh

et al. 2024

Energy Tech

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The instability of perovskite solar cells (PSCs) remains a major bottleneck for their commercialization, with thermal instability posing a major concern, given the inevitable presence of heat in photovoltaic devices. Mixed‐cation/halide perovskites demonstrate enhanced stability and efficiency compared to single‐cation/halide perovskites. Identifying the optimal perovskite composition capable of withstanding high temperatures for longer durations is crucial for the development of thermally stable PSCs. This study provides valuable insights into the optimization of mixed‐cation/halide perovskites to enhance the thermal and structural stability of perovskite films. By systematically varying the Cs content in FA1−yCsyPb(I0.85Br0.15)3 (0 < y < 25)‐based perovskite, it is observed that controlling the Cs content allows precise modulation of crystal orientation in perovskite film with 10% Cs obtained as the optimal value. The perovskite film containing 10% Cs not only exhibits reduced microstrain but also demonstrates enhanced thermal stability during testing at 85 °C under controlled humidity. Furthermore, planar PSCs are fabricated using FA0.90Cs0.10Pb(I0.85Br0.15)3 as the absorber layer and TOP‐3 as the hole‐transporting material, achieving a promising power conversion efficiency (PCE) of 17.70%. Impressively, the unencapsulated devices retain 95% of their initial PCE after 1000 h of dark storage under ambient conditions.

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Role of antisolvent temperature and quaternary ammonium cation-based ionic liquid engineering in the performance of perovskite solar cells processed under air ambient conditions

Abstract: Perovskite solar cells are becoming one of the strong contenders for renewable energy generation sources. However, to make the technology available in the market and commercially successful, efficient and stable...

Cited by 9 publications

References 64 publications

Stress-induced stabilization of the photoactive FAPbI₃ phase under ambient conditions without using an additive approach

Stress-induced stabilization of the photoactive FAPbI₃ phase under ambient conditions without using an additive approach

Effect of Interfacial Ionic Defects in Perovskite Solar Cells and their Mitigation Mechanism: A Comprehensive Theoretical Analysis with Experimental Validation

Thermal Stability Analysis of Formamidinium–Cesium‐Based Lead Halide Perovskite Solar Cells Fabricated under Air Ambient Conditions

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Role of antisolvent temperature and quaternary ammonium cation-based ionic liquid engineering in the performance of perovskite solar cells processed under air ambient conditions

Abstract: Perovskite solar cells are becoming one of the strong contenders for renewable energy generation sources. However, to make the technology available in the market and commercially successful, efficient and stable...

Cited by 9 publications

References 64 publications

Stress-induced stabilization of the photoactive FAPbI3 phase under ambient conditions without using an additive approach

Stress-induced stabilization of the photoactive FAPbI3 phase under ambient conditions without using an additive approach

Effect of Interfacial Ionic Defects in Perovskite Solar Cells and their Mitigation Mechanism: A Comprehensive Theoretical Analysis with Experimental Validation

Thermal Stability Analysis of Formamidinium–Cesium‐Based Lead Halide Perovskite Solar Cells Fabricated under Air Ambient Conditions

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Stress-induced stabilization of the photoactive FAPbI₃ phase under ambient conditions without using an additive approach

Stress-induced stabilization of the photoactive FAPbI₃ phase under ambient conditions without using an additive approach