Molecular Bridge on Buried Interface for Efficient and Stable Perovskite Solar Cells

Angewandte Chemie International Edition, Год журнала: 2023, Номер 62(34)

Опубликована: Июнь 26, 2023

Abstract The interface of perovskite solar cells (PSCs) is significantly important for charge transfer and device stability, while the buried with impact on film growth has been paid less attention. Herein, we use a molecular modifier, glycocyamine (GDA) to build bridge SnO 2 /perovskite, resulting in superior interfacial contact. This achieved through strongly interaction between GDA , which also appreciably modulates energy level. Moreover, can regulate crystal growth, yielding enlarged grain size absence pinholes, exhibiting substantially reduced defect density. Consequently, PSCs modification demonstrate significant improvement open circuit voltage (close 1.2 V) fill factor, leading an improved power conversion efficiency from 22.60 % 24.70 %. Additionally, stabilities devices under maximum point 85 °C heat both perform better than control devices.

Язык: Английский

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Oriented Molecular Bridge Constructs Homogeneous Buried Interface for Perovskite Solar Cells with Efficiency Over 25.3%

Advanced Materials, Год журнала: 2024, Номер 36(16)

Опубликована: Фев. 7, 2024

Abstract Buried interface optimization matters the efficiency improvement of planar perovskite solar cells (PSCs), and molecular bridge is reported to be an effective approach. Herein, a constructed at buried using 4‐chloro‐3‐sulfamoylbenzoic acid (CSBA), its preferred arrangement systematically investigated. It elucidated that CSBA prone orientationally absorbed on TiO 2 surface through COOH–Ti, then connect with S═O–Pb, resulting in feasible oriented bridge. Contributing passivated interfacial defects, optimized energy level, released tensile stress, from bridge, PSCs active area 0.08 cm achieve certified power conversion (PCE) 25.32%, highest among ‐based PSCs. Encouragingly, 1 champion PCE 24.20%, significantly promoting progress large‐area In addition, possess enhanced stability, unencapsulated can maintain ≈91% ≈85% their initial after 3000 h aging under ambient condition 1200 exposure UV irradiation.

Язык: Английский

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Synergistic transition metal ion co-doping and multiple functional additive passivation for realizing 25.30% efficiency perovskite solar cells

Energy & Environmental Science, Год журнала: 2023, Номер 16(11), С. 5243 - 5254

Опубликована: Янв. 1, 2023

Metal ion co-doping and additive-mediation strategies were used to boost the carrier extraction transportation in a SnO 2 /perovskite stack, resulting 25.30% efficiency for perovskite solar cells along with outstanding device stability.

Язык: Английский

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Surface Cleaning and Passivation Strategy for Durable Inverted Formamidinium–Cesium Triiodide Perovskite Solar Cells

Advanced Energy Materials, Год журнала: 2023, Номер 13(43)

Опубликована: Окт. 3, 2023

Abstract Formamidinium‐cesium triiodide (FA x Cs 1‐x PbI 3 ) perovskite exhibits excellent phase stability, making it the most promising candidate for commercial solar cell (PSC) applications, particularly those with inverted structures present a contribution to field of production. However, this composition often forms small grain sizes and has large number defects 2 residues on its surface, which can damage device performance. In study, post‐surface engineering strategy called “clean‐passivation” method is proposed address interfacial problem between electron transport layer (ETL). This significantly reduces surface boundary eliminates unreacted , resulting in suppressed iodine decomposition ion migration during operation. As result, an power conversion efficiency 24.27% superior stability achieved, as unencapsulated maintains 97.12% initial after 1500 h continuous light soaking. Furthermore, new clean‐passivate be universally applied other typical compositions.

Язык: Английский

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Significance of Formamidinium Incorporation in Perovskite Composition and Its Impact on Solar Cell Efficiency: A Mini‐Review

Advanced Energy and Sustainability Research, Год журнала: 2024, Номер 5(8)

Опубликована: Апрель 26, 2024

Perovskite solar cells (PSCs) have gained tremendous research interest recently owing to several advantages, including low material cost, facile solution processability, bandgap tunability, and alluring device efficiency. The organic formamidinium (FA) cation‐based perovskites are mainly considered as one of the potential candidates for charge carrier generation due their excellent properties, such thermal stability than traditional perovskites. However, inevitable unfavorable polymorphism (i.e., α δ ) at room temperature still forms basis numerous works allow fabrication a high‐quality absorber enhances PSCs performance. studies resolve contemporary techniques (e.g., passivation strategy) with recent novel methods presented in this review form essence improvements PSCs. morphology also influences charge‐transfer behavior device's lifetime. Therefore, understanding these properties is essential improve quality avoid many defects. This focuses on structure pure mixed FA various halides, cation's role composition. And comprehensive overview double, triple, quadrupole results proper scientific explanations understand physics.

Язык: Английский

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Interfacial Bridging Enables High Performance Perovskite Solar Cells with Fill Factor Over 85%

Advanced Energy Materials, Год журнала: 2024, Номер 14(41)

Опубликована: Июль 31, 2024

Abstract The power conversion efficiency (PCE) of perovskite solar cells (PSCs) is approaching their Shockley‐Queisser (S‐Q) limit through numerous efforts in key parameters improvement. To further the limit, it important to facilitate fill factor (FF), a parameter closely related carrier transport and nonradiative recombination. Herein, an interfacial bridging strategy proposed improve FF, which utilizes functional graphene quantum dots at tin oxide (SnO 2 )/perovskite buried interface. As result, synergistic effects enhanced conductivity SnO , preferable energy alignment interface improved crystal orientation are realized. champion FF reaches 85.24% formamidinium lead iodide (FAPbI 3 ) based PSCs, ranks among highest n‐i‐p structure. Such also proven successful other systems, where PCE 24.86% formamidinium‐cesium (FACs)‐based devices 24.44% flexible devices. Therefore, this work provides practical design rule for pursuing high PSCs with carbon materials.

Язык: Английский

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Constructing orderly crystal orientation with a bidirectional coordinator for high efficiency and stable perovskite solar cells

Energy & Environmental Science, Год журнала: 2024, Номер 17(16), С. 6003 - 6012

Опубликована: Янв. 1, 2024

The trifluoroacetate pseudohalide anion, with dual functionalities, is introduced at the buried interface to promote orderly growth. This results in a power conversion efficiency of 25.60% and long-term stability under light exposure.

Язык: Английский

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Minimizing Voltage Losses via Synergistically Reducing Hetero‐Interface Energy Offset for High Efficiency Perovskite Solar Cells

Small, Год журнала: 2024, Номер 20(33)

Опубликована: Апрель 2, 2024

Abstract The open circuit voltage ( V OC ) losses at multiple interfaces within perovskite solar cells (PSCs) limit the improvements in power conversion efficiency (PCE). Herein, a tailored strategy is proposed to reduce energy offset both hetero‐interfaces PSCs decrease losses. For interface of and electron transport layer where exists mass defects, it uses pyromellitic acid serve as molecular bridge, which reduces non‐radiative recombination level offset. hole layer, includes passivator PEAI, detrimental effect (negative shift work function) PEAI passivation optimizing alignment are neutralized by incorporating (2‐(4‐(bis(4‐methoxyphenyl)amino)phenyl)‐1‐cyanovinyl)phosphonic acid. Owing synergistically reduced hetero‐interface offset, achieve PCE 25.13%, increased from 1.134 1.174 V. In addition, resulting possess enhanced stability, unencapsulated can maintain ≈96% ≈97% their initial after 2000 h aging under ambient conditions 210 operation conditions.

Язык: Английский

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Bridging the buried interface with conjugated molecule for highly efficient carbon-based inorganic CsPbI2Br perovskite solar cells fabricated in air

Chemical Engineering Journal, Год журнала: 2024, Номер 492, С. 152210 - 152210

Опубликована: Май 13, 2024

Язык: Английский

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SnO₂–Perovskite Interface Engineering Based on Bifacial Passivation via Multifunctional N-(2-Acetamido)-2-aminoethanesulfonic Acid toward Efficient and Stable Solar Cells

ACS Applied Materials & Interfaces, Год журнала: 2024, Номер 16(7), С. 9388 - 9399

Опубликована: Фев. 7, 2024

Bifacial passivation on both electron transport materials and perovskite light-absorbing layers as a straightforward technique is used for gaining efficient stable solar cells (PSCs). To develop this strategy, organic molecules containing multiple functional groups can maximize the effect of defect suppression. Based this, we introduce N-(2-acetamido)-2-aminoethanesulfonic acid (ACES) at interface between tin oxide (SnO2) perovskite. The synergistic in ACES, including amino, carbonyl (C═O), sulfonic (S═O) groups, promotes charge extraction SnO2 provides an improved energy level alignment transfer. Furthermore, S═O ACES effectively passivates defects uncoordinated Pb2+ films, resulting enhanced crystallinity decreased nonradiative recombination buried interface. power conversion efficiency (PCE) related PSCs increases from 20.21% to 22.65% with reduced J–V hysteresis after modification ACES. Notably, upon being stored low relative humidity 40 ± 5% over 2000 h high 80 1000 h, unencapsulated ACES-modified device retains up 90% 80% their initial PCE, respectively. This study deepens engineering perovskites realizing cells.

Язык: Английский

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