Highly Efficient and Scalable p-i-n Perovskite Solar Cells Enabled by Poly-metallocene Interfaces

Journal of the American Chemical Society, Год журнала: 2024, Номер 146(19), С. 13391 - 13398

Опубликована: Май 1, 2024

Inverted p-i-n perovskite solar cells (PSCs) are easy to process but need improved interface characteristics with reduced energy loss prevent efficiency drops when increasing the active photovoltaic area. Here, we report a series of poly ferrocenyl molecules that can modulate surface enabling construction small- and large-area PSCs. We found perovskite–ferrocenyl interaction forms hybrid complex enhanced coordination strength activated electronic states, leading lower interfacial nonradiative recombination charge transport resistance losses. The resulting PSCs achieve an up 26.08% for small-area devices 24.51% (1.0208 cm2). Moreover, maintain >92% initial after 2000 h continuous operation at maximum power point under 1-sun illumination 65 °C.

Язык: Английский

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Bifunctional ligand-induced preferred crystal orientation enables highly efficient perovskite solar cells

Joule, Год журнала: 2024, Номер 8(11), С. 3169 - 3185

Опубликована: Авг. 13, 2024

Язык: Английский

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Constructing Stable Perovskite with Small Molecule Bridge Interface Passivation

Advanced Energy Materials, Год журнала: 2025, Номер unknown

Опубликована: Янв. 5, 2025

Abstract The interfaces of each layer in perovskite solar cells (PSCs) have a significant impact on the charge transfer and recombination. Especially, interface between hole transport (HTL) p‐i‐n type PSCs significantly affects contact characteristics HTL perovskite, hindering further improvements performance stability. Herein, small molecule 9‐Fluorenylmethoxycarbonyl chloride (9‐YT) is introduced as bridge for PSCs, which enhances interaction self‐assembly molecules (SAMs) perovskite. conjugated backbone 9‐YT can interact with SAM (MeO‐2PACz) by π–π stacking reaction. Moreover, also improves interfacial through strong interactions where carbonyl groups Cl atoms uncoordinated Pb 2+ layer. incorporation demonstrated to markedly enhance extraction at perovskite/hole interface, optimize energy level alignment, mitigate recombination, passivate defects Finally, device treated achieves power conversion efficiency (PCE) 24.82%. At same time, still maintain 92.6% original PCE after long‐term stability test 1200 h.

Язык: Английский

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Preferred Crystallographic Orientation via Solution Bathing for High‐Performance Inverted Perovskite Photovoltaics

Advanced Functional Materials, Год журнала: 2024, Номер 34(46)

Опубликована: Июнь 27, 2024

Abstract The meticulous control of crystal facets in polycrystalline perovskite films offers valuable insights into the photoelectric properties, varying significantly with different orientations. Exploring effective means to regulate these is crucial, and further revealing underlying mechanisms needed. Here, research employed green solution bathing obtain high‐quality preferred crystallographic orientation. In brief, eco‐friendly 2‐pentanol used as solvent, functional molecules 2‐(dimethylaminomethyl)‐4‐(2‐aminoethylthiomethyl)thiazole (DAT) are introduced solute. By introducing DAT molecules, precise over nucleation kinetics achieved, resulting a preferential (100) facet Conversely, without exhibited distinct (111) regulation on film verified through theoretical analyses. Theoretical calculations show that S atom binds most strongly FAPbI 3 , promoting surface energy reduction thermodynamic enhancement, favoring Crystallographic characterization proved effect. addition, PL/TRPL tests confirm superior properties (100)‐oriented films. work introduces novel approach preparation process for regulating orientation

Язык: Английский

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Crystallization Modulation and Holistic Passivation Enables Efficient Two-Terminal Perovskite/CuIn(Ga)Se2 Tandem Solar Cells

Nano-Micro Letters, Год журнала: 2024, Номер 17(1)

Опубликована: Сен. 22, 2024

Abstract Two-terminal (2-T) perovskite (PVK)/CuIn(Ga)Se 2 (CIGS) tandem solar cells (TSCs) have been considered as an ideal cell because of their best bandgap matching regarding to Shockley–Queisser (S–Q) limits. However, the nature irregular rough morphology commercial CIGS prevents people from improving device performances. In this paper, D-homoserine lactone hydrochloride is proven improve coverage PVK materials on surfaces and also passivate bulk defects by modulating growth crystals. addition, minority carriers near PVK/C60 interface incompletely passivated trap states caused recombination. A surface reconstruction with 2-thiopheneethylammonium iodide N , -dimethylformamide assisted passivates defect sites located at grain boundaries. Meanwhile, LiF used create field effect, repelling hole away C60 thus reducing As a result, 2-T PVK/CIGS yielded power conversion efficiency 24.6% (0.16 cm ), one highest results for TSCs our knowledge. This validation underscores potential methodology in achieving superior performance cells.

Язык: Английский

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Optimization of Charge Extraction and Interconnecting Layers for Highly Efficient Perovskite/Organic Tandem Solar Cells with High Fill Factor

Advanced Materials, Год журнала: 2024, Номер 36(49)

Опубликована: Сен. 23, 2024

Abstract Perovskite/organic tandem solar cells (POTSCs) have garnered significant attention due to their potential for achieving high photovoltaic (PV) performance. However, the reported power conversion efficiencies (PCEs) and fill factors (FFs) are still subpar challenges associated with charge extraction in organic bulk‐heterojunction (BHJ) energy losses interconnecting layers (ICLs). Here, a quaternary BHJ blend is developed enhance subcell, contributing an increased FF of ≥78% under 1 sun illumination even more lower intensities. Meanwhile, ICLs reduced via incorporation self‐assembly monolayer (SAM), (4‐(3,6‐Dimethyl‐9H‐carbazol‐9‐yl)butyl)phosphonic acid (Me‐4PACz), form MoO x /SAM interface thorough control thickness suppress parasitic absorption. The resultant POTSCs achieve remarkable PCE 25.56% (certified: 24.65%), record 83.62%, which among highest PCEs all types perovskite‐based (TSCs) till now. This work proves optimization effective strategies promote performance surpass other solution‐processed TSCs near future.

Язык: Английский

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Highly Efficient Monolithic Perovskite/TOPCon Silicon Tandem Solar Cells Enabled by “Halide Locking”

Advanced Materials, Год журнала: 2025, Номер unknown

Опубликована: Янв. 2, 2025

Abstract Perovskite/silicon tandem solar cells (TSCs) are promising candidates for commercialization due to their outstanding power conversion efficiencies (PCEs). However, controlling the crystallization process and alleviating phases/composition inhomogeneity represent a considerable challenge perovskite layers grown on rough silicon substrates, ultimately limiting efficiency stability of TSC. Here, this study reports “halide locking” strategy that simultaneously modulates nucleation crystal growth wide bandgap perovskites by introducing multifunctional ammonium salt, thioacetylacetamide hydrochloride (TAACl), bind with all types cations anions in mixed halide precursor. The approach not only enables excellent compositional uniformity wet‐film stage but also induces preferred orientation along (001) plane following nucleation, leading enhanced homogeneity film both vertical horizontal directions over long‐length scales. resulting wide‐bandgap yield exceptional open‐circuit voltage‐fill factor products ( V OC × FF) 1.074 1.040 small‐ (0.0414 cm 2 ) large‐area (1.0208 devices, respectively. Corresponding based Tunnel Oxide Passivated Contact (TOPCon) subcells achieve record PCE 31.32% remarkable 1.931 FF 81.54%.

Язык: Английский

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Enhancing Interfacial Contact for Efficient and Stable Inverted Perovskite Solar Cells and Modules

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Янв. 7, 2025

Abstract Defective perovskite surfaces severely limit the development of inverted solar cells (PSCs). Here, impacts surface treatment are systematically investigated with organic ammonium salts, namely piperidinium iodide (PpI) and piperazinedihydroiodide (PDI), on performance formamidinium‐cesium (FACs)‐based PSCs. These results indicate that PpI, its high dipole moment, tends to form 1D structures surface, which hinders electron transport. By contrast, PDI post‐treatment does not lead formation such structures; instead, it forms a thin passivation layer homogenizes electric potential across surface. This merit in favorable alignment energy levels significant reduction non‐radiative recombination at perovskite/electron transport interface. As result, module (PSM) achieved power conversion efficiency (PCE) 22.08% an aperture area 11.1 cm 2 (certified 21.58%), showing low‐efficiency discrepancy versus small‐area counterpart 25.09%. Notably, PSM can maintain 92.5% initial PCE after continuous 1000 h 1‐sun operation 65 °C ambient air.

Язык: Английский

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Chemical passivation and grain-boundary manipulation via in situ cross-linking strategy for scalable flexible perovskite solar cells

Science Advances, Год журнала: 2025, Номер 11(5)

Опубликована: Янв. 31, 2025

Flexible perovskite solar cells (f-PSCs) are considered the most promising candidates in portable power applications. However, high sensitivity of crystallization on substrate and intrinsic brittleness usually trade off performance f-PSCs. Herein, we introduced an initiator-free cross-linkable monomer (2,5-dioxopyrrolidin-1-yl) 5-(dithiolan-3-yl)pentanoate (FTA), which can chemically passivate defects enable real-time fine regulation crystallization. The resulting film exhibited higher crystallinity, enlarged grain size, reduced dependence substrate. In addition, cross-linked FTA [CL(FTA)] distributed along boundaries effectively released residual stress securely bound grains together. Consequently, CL(FTA)-modified flexible PSCs achieved a record-breaking efficiency 24.64% (certified 24.08%). Moreover, scalable potential has been verified by corresponding rigid modules, delivering impressive efficiencies 19.53 17.13%, respectively. Furthermore, optimized device demonstrated bending durability improved operational stability, thereby advancing progress f-PSCs toward industrialization.

Язык: Английский

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Radical Molecular Network‐Buffer Minimizes Photovoltage Loss in FAPbI₃ Perovskite Solar Cells

Advanced Materials, Год журнала: 2025, Номер unknown

Опубликована: Фев. 24, 2025

Abstract Formamidinium lead iodide (FAPbI₃) perovskite solar cells (PSCs) hold immense potential for high‐efficiency photovoltaics, but maximizing their open‐circuit voltage ( V OC ) remains challenging. Targeting the inherently stable {111} c ‐dominant facets is a promising approach enhancing stability, formation typically suffers from high defect densities and disordered growth. This study introduces novel using an in situ polymerizable radical molecule, ATEMPO, as additive to address these issues. ATEMPO preferentially interacts with facets, guiding growth forming “radical molecular network‐buffer” upon polymerization. The network effectively mitigates lattice strain, suppresses formation, enhances charge transport via redox‐mediated hopping, provides hydrophobic barrier, significantly improving moisture resistance. strategy yields high‐quality, ‐oriented FAPbI₃ films, leading champion PCE of 25.28% remarkably 1.203 V, corresponding energy loss E only 0.297 eV, among highest reported FAPbI₃‐based PSCs. Furthermore, mini‐module fabricate active area 12.5 cm 2 achieve 21.39%. work paves way developing high‐performance, PSCs minimized photovoltage loss. it offers enhance device longevity environmental concerns.

Язык: Английский

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