Bimolecularly passivated interface enables efficient and stable inverted perovskite solar cells

Science, Год журнала: 2023, Номер 382(6672), С. 810 - 815

Опубликована: Ноя. 16, 2023

Compared with the n-i-p structure, inverted (p-i-n) perovskite solar cells (PSCs) promise increased operating stability, but these photovoltaic often exhibit lower power conversion efficiencies (PCEs) because of nonradiative recombination losses, particularly at perovskite/C60 interface. We passivated surface defects and enabled reflection minority carriers from interface into bulk using two types functional molecules. used sulfur-modified methylthio molecules to passivate suppress through strong coordination hydrogen bonding, along diammonium repel reduce contact-induced achieved field-effect passivation. This approach led a fivefold longer carrier lifetime one-third photoluminescence quantum yield loss certified quasi-steady-state PCE 25.1% for PSCs stable operation 65°C >2000 hours in ambient air. also fabricated monolithic all-perovskite tandem 28.1% PCE.

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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Anion–π interactions suppress phase impurities in FAPbI3 solar cells

Nature, Год журнала: 2023, Номер 623(7987), С. 531 - 537

Опубликована: Окт. 18, 2023

Язык: Английский

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Efficient, stable formamidinium-cesium perovskite solar cells and minimodules enabled by crystallization regulation

Joule, Год журнала: 2022, Номер 6(3), С. 676 - 689

Опубликована: Март 1, 2022

Язык: Английский

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Recent Progress of Critical Interface Engineering for Highly Efficient and Stable Perovskite Solar Cells

Advanced Energy Materials, Год журнала: 2021, Номер 12(5)

Опубликована: Дек. 29, 2021

Abstract Organic–inorganic lead halide perovskite solar cells (PSCs) have demonstrated enormous potential as a new generation of solar‐based renewable energy. Although their power conversion efficiency (PCE) has been boosted to spectacular record value, the long‐term stability efficient PSCs is still dominating concern that hinders commercialization. Notably, interface engineering identified valid strategy with extraordinary achievements for enhancing both and PSCs. Herein, latest research advances various interfaces are summarized, basic theory multifaceted roles optimizing device properties analyzed. As highlight, authors provide insights on deposition interlayers, application first‐principle calculation, challenges solutions high toward future

Язык: Английский

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Lessons learned: how to report XPS data incorrectly about lead-halide perovskites

Materials Chemistry Frontiers, Год журнала: 2023, Номер 7(18), С. 3797 - 3802

Опубликована: Янв. 1, 2023

X-Ray photoelectron spectroscopy is a powerful tool for identifying the interactions of additives or surface treatments with components in lead halide perovskites.

Язык: Английский

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Boosted charge extraction of NbO_x-enveloped SnO₂ nanocrystals enables 24% efficient planar perovskite solar cells

Energy & Environmental Science, Год журнала: 2021, Номер 14(9), С. 5074 - 5083

Опубликована: Янв. 1, 2021

A layer of amorphous NbO x is employed to envelope self-developed SnO 2 NCs and the resultant PSC achieves a PCE 24.01% with negligible hysteresis remarkable stability, which among most efficient planar PSCs.

Язык: Английский

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Ionic‐Liquid‐Perovskite Capping Layer for Stable 24.33%‐Efficient Solar Cell

Advanced Energy Materials, Год журнала: 2021, Номер 12(6)

Опубликована: Дек. 29, 2021

Abstract Metal‐halide perovskite has emerged as an effective photovoltaic material for its high power conversion efficiency (PCE), low cost and straightforward fabrication techniques. Unfortunately, long‐term operational durability, mainly affected by halide ion migration undercoordinated Pb 2+ is still the bottleneck large‐scale commercialization. In this work, ionic liquid (IL) designed to effectively cap grain surface improved stability reduced trap density. More specifically, Br − in IL passivates chemically bonding it, resulting a thin layer of ionic‐liquid‐perovskite formed on surface, leading performance better stability. Specifically, solar cell exhibits open‐circuit voltage 1.192 V PCE 24.33% under one‐sun illumination with negligible hysteresis, large area (10.75 cm 2 ) integrated module achieves 20.33%. Moreover, bare device maintains over 90% initial after 700 h aging at 65 °C. It also shows outstanding only about 10% degradation being exposed ambient environment 1000 h. The superior demonstrate that present passivating strategy promising approach high‐performance applications.

Язык: Английский

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Versatile Hole Selective Molecules Containing a Series of Heteroatoms as Self‐Assembled Monolayers for Efficient p‐i‐n Perovskite and Organic Solar Cells

Advanced Functional Materials, Год журнала: 2022, Номер 32(49)

Опубликована: Сен. 16, 2022

Abstract Inverted type perovskite solar cells (PSCs) have recently emerged as a major focus in academic and industrial photovoltaic research. Their multiple advantages over conventional PSCs include easy processing, hysteresis‐free behavior, high stability, compatibility for tandem applications. However, the maximum power conversion efficiency (PCE) of inverted still lags behind those because suitable charge‐selective materials are limited. In this study, excellent hole‐selective introduced. A series tricyclic aromatic rings containing O, S, or Se, respectively, core heteroatom, along with phosphonic acid anchor, form self‐assembled monolayer (SAM) that directly contacts absorber. The influence heteroatoms structure on molecular energetics operating characteristics corresponding is investigated using complementary experimental techniques well density functional theory (DFT) calculations. It found all SAMs formed an energetically well‐aligned interface interaction energy between Se‐containing SAM absorber strongest among it reduces interfacial defect density, turn leading to extended charge carrier lifetime. As result, incorporating achieves PCE 22.73% retains ≈96% their initial after point tracking test 500 h without encapsulation under ambient conditions. All then employed organic (OSCs). Again, SAM‐based OSCs demonstrates highest 17.9% three OSCs. This study great potential precisely engineered use high‐performance cells.

Язык: Английский

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Halide Perovskite Crystallization Processes and Methods in Nanocrystals, Single Crystals, and Thin Films

Advanced Materials, Год журнала: 2022, Номер 34(52)

Опубликована: Апрель 6, 2022

Abstract Halide perovskite semiconductors with extraordinary optoelectronic properties have been fascinatedly studied. nanocrystals, single crystals, and thin films prepared for various fields, such as light emission, detection, harvesting. High‐performance devices rely on high crystal quality determined by the nucleation growth process. Here, fundamental understanding of crystallization process driven supersaturation solution is discussed methods halide crystals are summarized. Supersaturation determines proportion average Gibbs free energy changes surface volume molecular units involved in spontaneous aggregation, which could be stable induce homogeneous only when exceeds a required minimum critical concentration ( C min ). Crystal heterogeneous thermodynamically easier than due to existent surfaces. Nanocrystals mainly via nucleation‐dominated rapidly increasing over , growth‐dominated keeping between solubility while compromising processes ensure compactness grain sizes. Typical strategies preparing these three forms perovskites also reviewed.

Язык: Английский

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