Interface Modification for Efficient and Stable Inverted Inorganic Perovskite Solar Cells

Advanced Materials, Journal Year: 2023, Volume and Issue: 35(31)

Published: June 7, 2023

Due to their excellent thermal stability and ideal bandgap, metal halide inorganic perovskite based solar cells (PSCs) with inverted structure are considered as an choice for perovskite/silicon tandem cells. However, the power conversion efficiency (PCE) of still lags far behind that conventional n-i-p PSCs due interfacial energy level mismatch high nonradiative charge recombination. Herein, performance is significantly improved by engineering CsPbI3-x Brx films 2-mercapto-1-methylimidazole (MMI). It found mercapto group can preferably react undercoordinated Pb2+ from forming Pb-S bonds, which appreciably reduces surface trap density. Moreover, MMI modification results in a better alignment electron-transporting material, promoting carrier transfer reducing voltage deficit. The above combination open-circuit enhancement 120 mV, yielding champion PCE 20.6% 0.09 cm2 area 17.3% 1 area. Furthermore, ambient, operational heat stabilities also greatly improved. work demonstrates simple but effective approach fabricating highly efficient stable PSCs.

Language: Английский

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Constructing robust heterointerfaces for carrier viaduct via interfacial molecular bridges enables efficient and stable inverted perovskite solar cells

Energy & Environmental Science, Journal Year: 2023, Volume and Issue: 16(12), P. 5792 - 5804

Published: Jan. 1, 2023

To ensure carrier selectivity, we propose an interfacial molecular bridge comprised of Ph-CH 2 N + H 3− n (CH 3 ) ammonium cation at the perovskite–substrate interface and reveal its underlying impact on PSCs performance.

Language: Английский

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High-efficiency unbiased water splitting with photoanodes harnessing polycarbazole hole transport layers

Energy & Environmental Science, Journal Year: 2024, Volume and Issue: 17(7), P. 2541 - 2553

Published: Jan. 1, 2024

The conformal heterojunction of a competent hole transport layer onto the nanoporous BiVO 4 photoanode is highly challenging, despite its promise for unbiased photoelectrochemical (PEC) water splitting.

Language: Английский

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Pushing the thinness limit of silver films for flexible optoelectronic devices via ion-beam thinning-back process

Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)

Published: March 13, 2024

Abstract Reducing the silver film to 10 nm theoretically allows higher transparency but in practice leads degraded and electrical conductivity because ultrathin tends be discontinuous. Herein, we developed a thinning-back process address this dilemma, which is first deposited larger thickness with high continuity then thinned back reduced an ultrasmooth surface, both implemented by flood ion beam. Contributed shallow implantation of atoms into substrate during deposition, thinness films down 4.5 can obtained, thinner than ever before. The atomic-level surface smooth permits excellent visible transparency, conductivity, lowest haze among all existing transparent conductors. Moreover, exhibits unique robustness mechanical flexibility. Therefore, ion-beam presents promising solution towards conductor for flexible optoelectronic devices.

Language: Английский

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Progress in Flexible Perovskite Solar Cells: Paving the Way for Scalable Manufacturing

Advanced Materials Technologies, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 20, 2025

Abstract The urgency for a sustainable mitigation of the environmental impacts caused by climate change highlights importance renewable energy technologies to fight this challenge. Perovskite solar cells (PSCs) emerge as promising alternative traditional photovoltaic (PV) due their unprecedented increase in efficiency (currently peaking at 26.95%) and long‐term stability proven successful completion industry relevant International Electrotechnical Commission (IEC) testing standards. Flexible PSCs (f‐PSCs) offer significant advantages such lightweight high power‐per‐weight ratio, mechanical flexibility, throughput roll‐to‐roll (R2R) manufacturing. These make f‐PSCs ideal implementation various applications areas, wearable electronics, portable devices, space PV, building‐ or automotive‐integrated PVs, more. Notably, efficiencies over 23% now mark milestone f‐PSCs, demonstrating competitiveness with rigid panels. This review explores breakthroughs focusing on flexible substrates, electrode materials, perovskite inks, encapsulation strategies. It also covers recent advancements studies fabricated scalable deposition methods emphasizes interfacial engineering enhancing durability. concludes summary key findings, remaining challenges, perspectives market uptake f‐PSCs.

Language: Английский

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Monolithically-grained perovskite solar cell with Mortise-Tenon structure for charge extraction balance

Nature Communications, Journal Year: 2023, Volume and Issue: 14(1)

Published: June 3, 2023

Although the power conversion efficiency values of perovskite solar cells continue to be refreshed, it is still far from theoretical Shockley-Queisser limit. Two major issues need addressed, including disorder crystallization and unbalanced interface charge extraction, which limit further improvements in device efficiency. Herein, we develop a thermally polymerized additive as polymer template film, can form monolithic grain unique "Mortise-Tenon" structure after spin-coating hole-transport layer. Importantly, suppressed non-radiative recombination balanced extraction benefit high-quality crystals Mortise-Tenon structure, resulting enhanced open-circuit voltage fill-factor device. The PSCs achieve certified 24.55% maintain >95% initial over 1100 h accordance with ISOS-L-2 protocol, well excellent endurance according ISOS-D-3 accelerated aging test.

Language: Английский

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Blade‐Coated Carbon Electrode Perovskite Solar Cells to Exceed 20% Efficiency Through Protective Buffer Layers

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 33(34)

Published: May 1, 2023

Abstract Perovskite solar cells with carbon electrode have a commercial impact because of their facile scalability, low‐cost, and stability. In these devices, it remains challenge to design an efficient hole transport layer (HTL) for robust interfacing perovskite on one side another. Herein, organic/inorganic double planar HTL is constructed based polythiophene (P3HT) nickel oxide (NiOx) nanoparticles address the named challenge. Through adding alkyl ammonium bromide (CTAB) modified NiOx nanoparticle P3HT, achieves cascade type‐II energy level alignment at perovskite/HTL interfaces preferential ohmic contact NiOx/carbon electrode, which greatly benefits in charge collection while suppressing transfer recombination. Besides, compared single P3HT layer, composite enables interfacial by protecting from being corroded paste during fabrication. As result, blade‐coated FA 0.6 MA 0.4 PbI 3 (fabricated ambient air fume hood) deliver efficiency 20.14%, highest value bladed coated cells, withstand 275 h maximum power point tracking without encapsulation (95% retained).

Language: Английский

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Enantiomerically Pure Fullerenes as a Means to Enhance the Performance of Perovskite Solar Cells

Advanced Energy Materials, Journal Year: 2023, Volume and Issue: 13(17)

Published: March 21, 2023

Abstract The rapidly advancing improvements in perovskite solar cells (PSCs) are driven, part, by the inclusion of suitable electron transport layers (ETLs) high performance devices. Fullerene derivatives particularly useful ETLs PSCs, but many utilized fullerenes present as isomeric mixtures. opportunities presented single‐isomer, single‐enantiomer PSCs poorly understood. Here, inverted prepared using bis[60]phenyl‐C61‐butyric acid methyl ester derivative ( anti )16,17‐bis[60]PCBM, comparing enantiomerically pure material to corresponding racemate. single enantiomer devices found have an improved performance, giving a power conversion efficiency (PCE) 23.2%, compared 20.1% PCE for It is also shown that PSC modules can be with state‐of‐the‐art 20.1%. Such excellent accompanied enhanced operational stability. This study thus provides strong evidence isomer provide important and it positions chiral exciting class moving forward.

Language: Английский

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Molecular Orientation Regulation of Hole Transport Semicrystalline‐Polymer Enables High‐Performance Carbon‐Electrode Perovskite Solar Cells

Small, Journal Year: 2024, Volume and Issue: 20(44)

Published: July 10, 2024

Carbon-based perovskite solar cells (PSCs) coupled with solution-processed hole transport layers (HTLs) have shown potential owing to their combination of low cost and high performance. However, the commonly used poly(3-hexylthiophene) (P3HT) semicrystalline-polymer HTL dominantly shows edge-on molecular orientation, in which alkyl side chains directly contact layer, resulting an electronically poor at perovskite/P3HT interface. The study adopts a synergetic strategy comprising additive solvent engineering transfer orientation P3HT into 3D orientation. target possesses improved charge as well enhanced moisture-repelling capability. Moreover, energy level alignment between layer is realized. As result, champion devices small (0.04 cm

Language: Английский

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Robust chelated lead octahedron surface for efficient and stable perovskite solar cells

Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)

Published: Sept. 4, 2024

Language: Английский

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