Crystallization manipulation and holistic defect passivation toward stable and efficient inverted perovskite solar cells

Energy & Environmental Science, Год журнала: 2023, Номер 16(9), С. 3825 - 3836

Опубликована: Янв. 1, 2023

Synergistic modification of new intermediate phase assisted crystallization and upper interface passivation for enhanced crystallization, reduced defect density, released stress in perovskite films, enabling 24.61% efficient inverted devices.

Язык: Английский

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Managing Interfacial Defects and Carriers by Synergistic Modulation of Functional Groups and Spatial Conformation for High‐Performance Perovskite Photovoltaics Based on Vacuum Flash Method

Advanced Materials, Год журнала: 2023, Номер 35(23)

Опубликована: Апрель 7, 2023

Interfacial nonradiative recombination loss is a huge barrier to advance the photovoltaic performance. Here, one effective interfacial defect and carrier dynamics management strategy by synergistic modulation of functional groups spatial conformation ammonium salt molecules proposed. The surface treatment with 3-ammonium propionic acid iodide (3-APAI) does not form 2D perovskite passivation layer while propylammonium ions 5-aminopentanoic hydroiodide post-treatment lead formation layers. Due appropriate alkyl chain length, theoretical experimental results manifest that COOH NH3+ in 3-APAI can coordination bonding undercoordinated Pb2+ ionic hydrogen octahedron PbI64- , respectively, which makes both be simultaneously firmly anchored on films. This will strengthen effect improve transport transfer. confers better than 3-APAI-modified device based vacuum flash technology achieves an alluring peak efficiency 24.72% (certified 23.68%), among highly efficient devices fabricated without antisolvents. Furthermore, encapsulated degrades less 4% after 1400 h continuous sun illumination.

Язык: Английский

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Multifunctional Aminoglycoside Antibiotics Modified SnO₂ Enabling High Efficiency and Mechanical Stability Perovskite Solar Cells

Advanced Functional Materials, Год журнала: 2023, Номер 33(28)

Опубликована: Май 25, 2023

Abstract SnO 2 as an electron transport layer (ETL) has been widely used in regular planar perovskite solar cells (PSCs) owing to its high optical transmittance, less photocatalytic activity, and low‐temperature processing. However, ‐based PSCs still face many challenges which greatly impair their efficiency stability of PSCs. Herein, a novel effective multifunctional modification strategy is proposed by incorporating streptomycin sulfate (STRS) molecules with multiple functional groups into ETL. STRS can significantly suppress nanoparticle agglomeration, improve the electronic property , well reduce nonradiative recombination. At same time, interfacial residual tensile stress released energy level alignment becomes more matched. As result, STRS‐modified achieve higher 22.89% compared 20.61% control device exhibit hysteresis‐free feature. The humidity thermal based on STRS‐SnO are improved. Furthermore, flexible devices increased from 19.74% 20.79%, maintain >80% initial PCE after 4500 bending cycles bend radius 5 mm. This study provides low‐cost, facile, efficient for achieving

Язык: Английский

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Stabilizing Top Interface by Molecular Locking Strategy with Polydentate Chelating Biomaterials toward Efficient and Stable Perovskite Solar Cells in Ambient Air

Advanced Materials, Год журнала: 2024, Номер 36(19)

Опубликована: Фев. 1, 2024

The instability of top interface induced by interfacial defects and residual tensile strain hinders the realization long-term stable n-i-p regular perovskite solar cells (PSCs). Herein, one molecular locking strategy is reported to stabilize adopting polydentate ligand green biomaterial 2-deoxy-2,2-difluoro-d-erythro-pentafuranous-1-ulose-3,5-dibenzoate (DDPUD) manipulate surface grain boundaries films. Both experimental theoretical evidence collectively uncover that uncoordinated Pb

Язык: Английский

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Polydentate Ligand Reinforced Chelating to Stabilize Buried Interface toward High‐Performance Perovskite Solar Cells

Angewandte Chemie International Edition, Год журнала: 2024, Номер 63(8)

Опубликована: Янв. 5, 2024

The instability of the buried interface poses a serious challenge for commercializing perovskite photovoltaic technology. Herein, we report polydentate ligand reinforced chelating strategy to strengthen stability by managing interfacial defects and stress. bis(2,2,2-trifluoroethyl) (methoxycarbonylmethyl)phosphonate (BTP) is employed manipulate interface. C=O, P=O two -CF

Язык: Английский

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Minimizing the buried interfacial energy loss using a fluorine-substituted small molecule for 25.92%-efficiency and stable inverted perovskite solar cells

Energy & Environmental Science, Год журнала: 2024, Номер 17(19), С. 7342 - 7354

Опубликована: Янв. 1, 2024

Tetrafluorosuccinic acid was introduced into the buried interface to stabilize FA cations, mediate crystal growth of perovskite and reduce hole-transport barrier, delivering a record efficiency 25.92% for RbCsFAMA-based solar cells.

Язык: Английский

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Synergistically Stabilizing Hole Transport Layer and Dual Interface Enables High-Performance Perovskite Solar Cells

ACS Energy Letters, Год журнала: 2024, Номер 9(6), С. 2615 - 2625

Опубликована: Май 8, 2024

The migration and diffusion of Li+ halide ions, as well the volatilization 4-tert butylpyridine (tBP), seriously restrain long-term operational stability n-i-p perovskite solar cells (PSCs). Herein, we employ l-glutamic acid dibenzyl ester 4-toluenesulfonate (GADET) to simultaneously modulate hole transport layer (HTL) buried interface, which stabilizes HTL minimizes interfacial energy loss by immobilizing Li+, tBP, ions passivating dual interface defects. After forming Spiro-OMeTAD•+TFSI–, GADET impedes ion through ionic bond interaction P-methylbenzenesulfonate anion while formation hydrogen −NH3+ with tBP can suppress tBP. Moreover, trap-induced nonradiative recombination are inhibited via undercoordinated Pb vacancy defects based on multiple chemical bonds. synergistically modified devices achieve a champion efficiency 25.06% (certified PCE 24.08%). Meanwhile, PSCs was significantly improved.

Язык: Английский

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Pre‐Embedded Multisite Chiral Molecules Realize Bottom‐Up Multilayer Manipulation toward Stable and Efficient Perovskite Solar Cells

Advanced Functional Materials, Год журнала: 2024, Номер 34(22)

Опубликована: Янв. 7, 2024

Abstract The defects from functional layers and interface, the agglomeration of SnO 2 nanoparticles (NPs), poor perovskite crystallization are main barrier to further heightening power conversion efficiency (PCE) stability regular solar cells. Here, a bottom‐up multilayer manipulation strategy by pre‐embedding multisite racemic DL‐cysteine hydrochloride monohydrate (DLCH) into electron transport layer (ETL) is reported. positively negatively charged ETL, their interface can be passivated through synergistic effect ─SH, ─COOH, ─NH 3 + , Cl − groups in DLCH. synergy multiple chemical bonds enables cross‐layer passivation, which minimizes bulk interfacial nonradiative recombination losses. Furthermore, multifunctional DLCH plays role inhibiting NPs, managing photons, relieving tensile stress, manipulating crystallization. Benefiting above advantages, DLCH‐incorporating device delivers PCE 24.01%, much higher than 21.61% control device. Moreover, DLCH‐modified devices demonstrate inviting thermal ambient stabilities maintaining 93% initial after aging at 65 °C for 1800 h 95% original under relative humidity 20–25% 2000 h.

Язык: Английский

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Halides‐Enhanced Buried Interfaces for Stable and Extremely Low‐Voltage‐Deficit Perovskite Solar Cells

Advanced Materials, Год журнала: 2023, Номер 35(28)

Опубликована: Апрель 6, 2023

Abstract The perovskite buried interfaces have demonstrated pivotal roles in determining both the efficiency and stability of solar cells (PSCs); however, challenges remain understanding managing due to their non‐exposed feature. Here, we proposed a versatile strategy pre‐grafted halides strengthen SnO 2 –perovskite interface by precisely manipulating defects carrier dynamics through alteration halide electronegativity ( χ ), thereby resulting favorable crystallization minimized interfacial losses. Specifically, implementation fluoride with highest induces strongest binding affinity uncoordinated cations, leading retarded high‐quality films reduced residual stress. These improved properties enable champion efficiencies 24.2% (the control: 20.5%) 22.1% 18.7%) rigid flexible devices extremely low voltage deficit down 386 mV, all which are among reported values for PSCs similar device architecture. In addition, exhibit marked improvements longevity under various stressors humidity (>5000 h), light (1000 heat (180 bending test (10 000 times). This method provides an effective way improve quality toward high‐performance PSCs.

Язык: Английский

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Strain Engineering Toward High‐Performance Formamidinium‐Based Perovskite Solar Cells

Solar RRL, Год журнала: 2023, Номер 7(19)

Опубликована: Июль 16, 2023

The power conversion efficiency (PCE) of organic–inorganic halide perovskite solar cells (PSCs) has increased rapidly in recent years, with the certified best single‐junction photovoltaics reaching an astounding PCE 26%. Formamidine (FA)‐based perovskites possess excellent photovoltaic properties and superior thermal stability, establishing them as one most promising materials for light absorption. However, issue phase instability black‐phase formamidinium lead iodide ( α ‐FAPbI 3 ) seriously impeded its commercialization process, strain found films being regarded a significant factor impacting stability PSCs. This article begins by examining sources characterization techniques related to perovskites. Subsequently, it outlines effects on FA‐based presents strategies modify lattice strain. Finally, potential engineering future is discussed. review aims clarify impact perovskite, determine methods enhance device performance, ultimately facilitate these materials.

Язык: Английский

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