Stabilized hole-selective layer for high-performance inverted p-i-n perovskite solar cells

Science, Journal Year: 2023, Volume and Issue: 382(6668), P. 284 - 289

Published: Oct. 19, 2023

P-i-n geometry perovskite solar cells (PSCs) offer simplified fabrication, greater amenability to charge extraction layers, and low-temperature processing over n-i-p counterparts. Self-assembled monolayers (SAMs) can enhance the performance of p-i-n PSCs but ultrathin SAMs be thermally unstable. We report a robust hole-selective layer comprised nickel oxide (NiOx) nanoparticle film with surface-anchored (4-(3,11-dimethoxy-7H-dibenzo[c,g]carbazol-7-yl)butyl)phosphonic acid (MeO-4PADBC) SAM that improve stabilize NiOx/perovskite interface. The energetic alignment favorable contact binding between NiOx/MeO-4PADBC reduced voltage deficit various compositions led strong interface toughening effects under thermal stress. resulting 1.53-electron-volt devices achieved 25.6% certified power conversion efficiency maintained >90% their initial after continuously operating at 65 degrees Celsius for 1200 hours 1-sun illumination.

Language: Английский

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Highly efficient and stable perovskite solar cells via a multifunctional hole transporting material

Joule, Journal Year: 2024, Volume and Issue: 8(6), P. 1691 - 1706

Published: March 15, 2024

Language: Английский

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Ammonium cations with high pKa in perovskite solar cells for improved high-temperature photostability

Nature Energy, Journal Year: 2023, Volume and Issue: 8(11), P. 1229 - 1239

Published: Sept. 28, 2023

Language: Английский

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Rapid advances enabling high-performance inverted perovskite solar cells

Nature Reviews Materials, Journal Year: 2024, Volume and Issue: 9(6), P. 399 - 419

Published: May 17, 2024

Language: Английский

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Multifunctional ytterbium oxide buffer for perovskite solar cells

Nature, Journal Year: 2024, Volume and Issue: 625(7995), P. 516 - 522

Published: Jan. 17, 2024

Language: Английский

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Hyperbranched polymer functionalized flexible perovskite solar cells with mechanical robustness and reduced lead leakage

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

Published: Oct. 13, 2023

Perovskite solar cells (PSCs) are multilayer structures. The interface between electron transport layer and perovskite is the mechanical weakest point in flexible PSCs due to its low fracture energy. Herein, we develop a highly adhesive polyamide-amine-based hyperbranched polymers reinforce interface. energy improved from 1.08 2.13 J·m-2 by with groups dynamic hydrogen bond networks. polymer functionalized achieve superior power conversion efficiencies of 25.05% 23.86% for rigid devices, respectively. Furthermore, contains abundant intramolecular cavities that can capture Pb2+. Pb leakage after cell damage effectively suppressed. Our findings provide insights on designing layers towards high-efficiency, mechanical-stable environment-friendly cells.

Language: Английский

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Strong-bonding hole-transport layers reduce ultraviolet degradation of perovskite solar cells

Science, Journal Year: 2024, Volume and Issue: 384(6700), P. 1126 - 1134

Published: June 6, 2024

The light-emitting diodes (LEDs) used in indoor testing of perovskite solar cells do not expose them to the levels ultraviolet (UV) radiation that they would receive actual outdoor use. We report degradation mechanisms p-i-n-structured under unfiltered sunlight and with LEDs. Weak chemical bonding between perovskites polymer hole-transporting materials (HTMs) transparent conducting oxides (TCOs) dominate accelerated A-site cation migration, rather than direct HTMs. An aromatic phosphonic acid, [2-(9-ethyl-9H-carbazol-3-yl)ethyl]phosphonic acid (EtCz3EPA), enhanced at perovskite/HTM/TCO region a group bonded TCOs nitrogen interacting lead perovskites. A hybrid HTM EtCz3EPA strong hole-extraction polymers retained high efficiency improved UV stability devices, champion minimodule-independently measured by Perovskite PV Accelerator for Commercializing Technologies (PACT) center-retained operational >16% after 29 weeks testing.

Language: Английский

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A crystal capping layer for formation of black-phase FAPbI ₃ perovskite in humid air

Science, Journal Year: 2024, Volume and Issue: 385(6705), P. 161 - 167

Published: July 11, 2024

Black-phase formamidinium lead iodide (α-FAPbI 3 ) perovskites are the desired phase for photovoltaic applications, but water can trigger formation of photoinactive impurity phases such as δ-FAPbI . We show that classic solvent system perovskite fabrication exacerbates this reproducibility challenge. The conventional coordinative dimethyl sulfoxide (DMSO) promoted under high relative humidity (RH) conditions because its hygroscopic nature. introduced chlorine-containing organic molecules to form a capping layer blocked moisture penetration while preserving DMSO-based complexes regulate crystal growth. report power conversion efficiencies >24.5% solar cells fabricated across an RH range 20 60%, and 23.4% at 80% RH. unencapsulated device retained 96% initial performance in air (with 40 60% RH) after 500-hour maximum point operation.

Language: Английский

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Fundamental understanding of stability for halide perovskite photovoltaics: The importance of interfaces

Chem, Journal Year: 2023, Volume and Issue: 10(1), P. 35 - 47

Published: Sept. 29, 2023

Language: Английский

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Mobile iodides capture for highly photolysis- and reverse-bias-stable perovskite solar cells

Nature Materials, Journal Year: 2024, Volume and Issue: 23(6), P. 810 - 817

Published: April 29, 2024

Language: Английский

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