Self‐Induced Bi‐interfacial Modification via Fluoropyridinic Acid For High‐Performance Inverted Perovskite Solar Cells

Advanced Energy Materials, Год журнала: 2024, Номер unknown

Опубликована: Окт. 31, 2024

Abstract The uncontrolled crystallization of perovskite generates a significant number internal and interfacial defects, posing major challenge to the performance solar cells (PSCs). In this paper, novel bi‐interfacial modification strategy utilizing 5‐fluoropyridinic acid (FPA) is proposed modulate crystal growth provide defect passivation. It demonstrated that FPA self‐deposited at both top bottom interfaces films during thermal annealing. CO N functional groups in serve as chelating agents, binding closely uncoordinated Pb 2+ /Pb clusters, thereby passivating defects reducing charge recombination interfaces. strong chemical interactions between further stabilize Pb‐I framework, promoting formation high‐quality films, confirmed by situ photoluminescence measurements. Consequently, modified inverted PSCs achieved an exceptional power conversion efficiency (PCE) 25.37%. Moreover, devices retained over 93.17% initial after 3000 h continuous illumination under one‐sun equivalent conditions nitrogen atmosphere. This paper presents promising pathway for enhancing stability through self‐induced approach.

Язык: Английский

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Dual Interface Passivation With Multi‐Site Regulation Toward Efficient and Stable Inverted Perovskite Solar Cells

Advanced Energy Materials, Год журнала: 2025, Номер unknown

Опубликована: Фев. 23, 2025

Abstract The rapid crystallization process of perovskite produces a large number defects that remain critical factor disturbs the performance solar cells (PSCs). In this research, these challenges are mitigated by introducing multifunctional 2,6‐pyridinedicarboxylic acid chloride (PAC) as an additive into perovskite. During thermal annealing process, predominant accumulation PAC occurs at upper and buried interfaces film. possesses multiple passivating sites facilitate anchoring lead iodine defects, thereby enhancing quality material across both its dual grain boundaries. With unique property, combined with advantages enhanced crystallization, reduced non‐radiative recombination, boosted charge carrier mobility, optimal energy level alignment, PSC achieved power conversion efficiency (PCE) 25.60% maintained more than 90% after 3000 h under one equivalent light 1400 dark high temperature (85 °C). interface passivation strategy provides sustainable solution to stability environmental for commercialization cells.

Язык: Английский

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Fluorinated Pyrimidine Bridged Buried Interface for Stable and Efficient Wide‐Bandgap Perovskite Solar Cells

Advanced Functional Materials, Год журнала: 2024, Номер unknown

Опубликована: Дек. 8, 2024

Abstract The buried interface of wide‐bandgap (WBG) perovskite solar cells (PSCs) is crucial for effective charge transfer and device stability. In this study, 2,4‐diamino‐6‐fluoropyrimidine (DMFP) incorporated into the layer to form a molecular bridge at between MeO‐4PACZ. DMFP treatment reduces agglomeration MeO‐4PACZ, resulting in denser more uniform self‐assembled monolayers (SAMs) by inducing favorable crystal orientation. addition, strong chemical interaction films significantly defect state density promotes growth high‐quality grains. Moreover, effectively modulates energy levels perovskites, facilitating interfacial extraction. As result, WBG PSCs treated with demonstrate remarkable power conversion efficiency (PCE) 21.96%, an enhanced short‐circuit current (J SC ) 21.60 mA cm −2 high open‐circuit voltage (V OC 1.23 V. prepared retain 95.5% their initial after 1500 h aging relative humidity ≈30% air, indicating excellent This study contributes deeper understanding proposes collaborative approach developing high‐performance PSCs.

Язык: Английский

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Enhancing Performance of Hole Transport Layer-Free Carbon-Based Organic-inorganic Halide Perovskite Solar Cells with Tuning Guanidinium Thiocyanate Through Additive Engineering

Optical Materials, Год журнала: 2025, Номер 160, С. 116758 - 116758

Опубликована: Фев. 1, 2025

Язык: Английский

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Charge distribution manipulation in fluorine-containing additives enables highly efficient and stable perovskite solar cells

Chemical Engineering Journal, Год журнала: 2025, Номер unknown, С. 160571 - 160571

Опубликована: Фев. 1, 2025

Язык: Английский

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Stabilizing 2D perovskite passivation layer with mixed spacer cations for efficient and stable perovskite solar cells

Nano Energy, Год журнала: 2025, Номер unknown, С. 110904 - 110904

Опубликована: Март 1, 2025

Язык: Английский

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