Highly efficient p-i-n perovskite solar cells that endure temperature variations

Science, Год журнала: 2023, Номер 379(6630), С. 399 - 403

Опубликована: Янв. 26, 2023

Daily temperature variations induce phase transitions and lattice strains in halide perovskites, challenging their stability solar cells. We stabilized the perovskite black improved cell performance using ordered dipolar structure of β-poly(1,1-difluoroethylene) to control film crystallization energy alignment. demonstrated p-i-n cells with a record power conversion efficiency 24.6% over 18 square millimeters 23.1% 1 centimeter, which retained 96 88% after 1000 hours 1-sun maximum point tracking at 25° 75°C, respectively. Devices under rapid thermal cycling between -60° +80°C showed no sign fatigue, demonstrating impact on operational

Язык: Английский

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The high open-circuit voltage of perovskite solar cells: a review

Energy & Environmental Science, Год журнала: 2022, Номер 15(8), С. 3171 - 3222

Опубликована: Янв. 1, 2022

This review summarizes the current progress of research on high open-circuit voltage various perovskite solar cells.

Язык: Английский

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Ionic liquids for advanced materials

Materials Today Nano, Год журнала: 2021, Номер 17, С. 100159 - 100159

Опубликована: Ноя. 12, 2021

Язык: Английский

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Smooth and Compact FASnI₃ Films for Lead-Free Perovskite Solar Cells with over 14% Efficiency

ACS Energy Letters, Год журнала: 2022, Номер 7(6), С. 2079 - 2083

Опубликована: Май 24, 2022

Currently, the highest-performing lead-free perovskite solar cells utilize element tin. Tin halide perovskites, typically FASnI3, resemble their lead-based counterparts in optoelectronic properties but possess dissimilar crystallization kinetics. To tackle usually poor film quality, we introduced trimethylthiourea (3T) to spin coating of FASnI3 films. This bifunctional ligand greatly improved morphology and texture films by spreading joining individual crystal grains. Accordingly, charge-carrier lifetime 3T-treated reached a record high 123 ns, open-circuit voltage at 0.92 V was only 0.2 short theoretical limit, both approaching those lead perovskites. The certified power conversion efficiency 14.0% stability against humid air are also among best for cells. Possible reasons efficacy 3T through H-bonding discussed. These findings emphasize deposition control tin perovskites give direction future developments.

Язык: Английский

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Aspartate all-in-one doping strategy enables efficient all-perovskite tandems

Nature, Год журнала: 2023, Номер 624(7990), С. 69 - 73

Опубликована: Ноя. 8, 2023

Язык: Английский

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Crystallization Dynamics of Sn‐Based Perovskite Thin Films: Toward Efficient and Stable Photovoltaic Devices

Advanced Energy Materials, Год журнала: 2021, Номер 12(1)

Опубликована: Ноя. 25, 2021

Abstract Tin‐based perovskites show great potential in photovoltaic applications, and the development of corresponding solar cells (PSCs) has made exciting progress during past few years. However, owing to high Lewis acidity easy oxidation Sn 2+ , Sn‐based perovskite films suffer from fast crystallization formation vacancy defects with low activation energy solution film‐forming process, resulting poor film quality inferior device performance. Therefore, an in‐depth understanding rational control dynamics is essential improve performance their PSCs. In this review, state‐of‐the‐art developments for impact on PSCs are systematically summarized. The review begins introduction fundamentals key difficulties process perovskites. Then, advanced strategies that focus regulating comprehensively reviewed, including solvent engineering, additive cation technique engineering. Finally, future perspectives research directions, regarding smart film, discussed towards high‐performance stable

Язык: Английский

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Efficient and Stable Tin Perovskite Solar Cells by Pyridine‐Functionalized Fullerene with Reduced Interfacial Energy Loss

Advanced Functional Materials, Год журнала: 2022, Номер 32(39)

Опубликована: Июль 13, 2022

Abstract In tin perovskite solar cells (PSCs), fullerene (C 60 ) and derivative [6,6]‐phenyl‐C61‐butyric acid methyl ester (PCBM) are commonly utilized electron transport materials. However, the energetic disorder, inadequate passivation, energy level mismatch of C PCBM limit improvement power conversion efficiency (PCE) lifespan PSCs. this work, a multifunctional interface manipulation strategy is developed by introducing pyridine‐functionalized derivative, fullerene‐n‐butyl‐pyridine ‐BPy), into between layer (ETL) to improve photovoltaic performance stability The ‐BPy can strongly anchor on surface via coordination interactions pyridine moiety Sn 2+ ion, which not only reinforces passivation trap‐state within film, but also regulates alignment reduce non‐radiative recombination. Moreover, improved binding carrier properties contribute superior device stability. resulting devices have achieved highest PCE 14.14% with negligible hysteresis, maintained over 95% their initial under continuous one‐sun illumination for 1000 h.

Язык: Английский

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Perovskite Films Regulation via Hydrogen‐Bonded Polymer Network for Efficient and Stable Perovskite Solar Cells

Angewandte Chemie International Edition, Год журнала: 2023, Номер 62(33)

Опубликована: Июнь 20, 2023

Perovskite solar cells (PSCs) are considered as a promising photovoltaic technology due to their high efficiency and low cost. However, long-term stability, mechanical durability, environmental risks still unable meet practical needs. To overcome these issues, we designed multifunctional elastomer with abundant hydrogen bonds carbonyl groups. The chemical bonding between polymer perovskite could increase the growth activation energy of film promote preferential high-quality film. Owing defect density gradient energy-level alignment, corresponding device exhibited champion 23.10 %. Furthermore, formation hydrogen-bonded network in film, target devices demonstrated excellent air stability enhanced flexibility for flexible PSCs. More importantly, coordinate Pb2+ ions, immobilizing lead atoms reduce release into environment. This strategy paves way industrialization high-performance

Язык: Английский

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Pyro-phototronic effect: An effective route toward self-powered photodetection

Nano Energy, Год журнала: 2023, Номер 107, С. 108172 - 108172

Опубликована: Янв. 7, 2023

Язык: Английский

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Ionic Liquid Stabilized Perovskite Solar Modules with Power Conversion Efficiency Exceeding 20%

Advanced Functional Materials, Год журнала: 2022, Номер 32(38)

Опубликована: Июль 8, 2022

Abstract Metal‐halide perovskite solar cells (PSCs) exhibit outstanding power conversion efficiencies (PCEs) when fabricated as mm‐sized devices, but creation of high‐performing large‐area modules that are stable on a sufficiently long timescale still presents significant challenge. Herein, the quality film is improved by using ionic liquid additives via forming new Pb‐N bonding between and Pb 2+ . This bond can be modulated critical screening anion structure liquid. The selected effectively reduces defects films markedly elongate their carrier lifetimes. As result, champion PCE 24.4% for small‐area (0.148 cm 2 ) devices 20.4% larger‐area (10.0 under AM 1.5G irradiation achieved. More importantly, modified retain 90% peak after aging 1900 h at 65 ± 5 ° C (ISOS‐T‐1) 80% continuous light soaking 750 h. non‐encapsulated maintained 1100 in air with relative humidity 35 5% temperature 25 dark (ISOS‐D‐1), showing great potential future commercialization.

Язык: Английский

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