Trap State Passivation for Stabilizing Perovskite Solar Cells via Multifunctional Molecules

Garai, Rabindranath; Gupta, Ritesh Kant; Iyer, Parameswar Krishnan

doi:10.1021/accountsmr.2c00207

Cited by 11 publications

(7 citation statements)

References 29 publications

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“…From the band diagram, the relatively significant change in the valence band in comparison with the conduction band of CsPbBr 3 perovskite was analyzed. As previously reported, passivating halide vacancy with other halides was known to reduce defect density. , Additionally, DFT simulation supported the bandgap change after the passivation with halide-modified parylenes.…”

Section: Results and Discussionsupporting

confidence: 80%

Defect-Passivated Photosensor Based on Cesium Lead Bromide (CsPbBr₃) Perovskite Quantum Dots for Microbial Detection

Park,

Kim,

Kim

et al. 2023

ACS Appl. Mater. Interfaces

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Section: Results and Discussionsupporting

confidence: 80%

Defect-Passivated Photosensor Based on Cesium Lead Bromide (CsPbBr₃) Perovskite Quantum Dots for Microbial Detection

Park,

Kim,

Kim

et al. 2023

ACS Appl. Mater. Interfaces

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“…Many researchers have proposed studies in which top layer and bottom layer of the perovskite, as well as the bulk perovskite, are simultaneously passivated. [ 104 ]…”

Section: Passivation Strategymentioning

confidence: 99%

Beyond Imperfections: Exploring Defects for Breakthroughs in Perovskite Solar Cell Research

Min,

Choi,

Kim

et al. 2023

Advanced Energy Materials

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The field of solar systems has undergone rapid development with the emergence of the special material, perovskite. Perovskite's unique mechanism, defect tolerance, has enabled perovskite solar cells (PSCs) to achieve high power conversion efficiencies (PCEs), and many studies on this subject have been conducted. “Defect tolerance” indicates that the defects in perovskite are primarily generated at the shallow‐energy level and do not occur through nonradiative recombination. However, this also indicates that defects are well formed in perovskite films and that the shallow defects can transform into deep traps, leading to long‐term stability issues. Therefore, controlling defects in perovskite is essential for developing PSCs with high PCEs. The causes of defects in perovskite are diverse, and the defect patterns differ considerably, particularly depending on the location of the PSCs. In this review, the defects generated in perovskite will be discussed and review several methods for passivating them at different.

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“…Organic–inorganic hybrid perovskites have emerged as the most promising material for solar cell applications, with power conversion efficiency (PCE) reaching more than 26.1% in just over a decade . The significant improvement in PCE can be attributed to modifications such as passivation of perovskite defects, regulation of perovskite composition, advancement of materials for the charge transport layer, and optimization of device architecture. − Despite the excellent PCE, little research and attention have been paid to understanding the effect of additive engineering on excited-state properties and charge carrier dynamics in these materials. − …”

Section: Introductionmentioning

confidence: 99%

Hot Carrier Cooling Mediated Efficiency Enhancement in Diamine Passivated Perovskite Solar Cells

Choudhary,

Garai,

Gupta

et al. 2024

ACS Appl. Energy Mater.

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Slowing hot carrier (HC) cooling in halide perovskites emerges as an efficient strategy to enhance the power conversion efficiency (PCE) of perovskite solar cells (PSCs). This approach facilitates the rapid extraction of HCs before they dissipate within the intricate lattice of the perovskite structure. In this investigation, we delve into the impact of amine-based additives on the relaxation of HCs in perovskite solar cells using a diamine 4,4′-diaminodiphenylmethaneiodide salt (MDA). The diamine has been used as an in situ additive in the perovskite precursor. The ultrafast femtosecond transient absorption (fs-TA) spectroscopy study confirms that the diamine-modified film slows the HC cooling time to 672 fs from the control (538 fs). Moreover, MDA additive helps to improve crystallization and passivate the traps for inhibiting nonradiative recombination, leading to higher PCE compared to the control device. The passivated devices show impressive ambient stability and retain 80% of initial PCE after 500 h. Our study provides an in-depth understanding of how precise control of HC cooling through additive engineering can improve the PSC's efficiency and stability.

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Trap State Passivation for Stabilizing Perovskite Solar Cells via Multifunctional Molecules

Cited by 11 publications

References 29 publications

Defect-Passivated Photosensor Based on Cesium Lead Bromide (CsPbBr₃) Perovskite Quantum Dots for Microbial Detection

Defect-Passivated Photosensor Based on Cesium Lead Bromide (CsPbBr₃) Perovskite Quantum Dots for Microbial Detection

Beyond Imperfections: Exploring Defects for Breakthroughs in Perovskite Solar Cell Research

Hot Carrier Cooling Mediated Efficiency Enhancement in Diamine Passivated Perovskite Solar Cells

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Trap State Passivation for Stabilizing Perovskite Solar Cells via Multifunctional Molecules

Cited by 11 publications

References 29 publications

Defect-Passivated Photosensor Based on Cesium Lead Bromide (CsPbBr3) Perovskite Quantum Dots for Microbial Detection

Defect-Passivated Photosensor Based on Cesium Lead Bromide (CsPbBr3) Perovskite Quantum Dots for Microbial Detection

Beyond Imperfections: Exploring Defects for Breakthroughs in Perovskite Solar Cell Research

Hot Carrier Cooling Mediated Efficiency Enhancement in Diamine Passivated Perovskite Solar Cells

Contact Info

Product

Resources

About

Defect-Passivated Photosensor Based on Cesium Lead Bromide (CsPbBr₃) Perovskite Quantum Dots for Microbial Detection

Defect-Passivated Photosensor Based on Cesium Lead Bromide (CsPbBr₃) Perovskite Quantum Dots for Microbial Detection