Heterogeneous 2D/3D Tin‐Halides Perovskite Solar Cells with Certified Conversion Efficiency Breaking 14%

Advanced Materials, Год журнала: 2021, Номер 33(36)

Опубликована: Июль 23, 2021

Abstract As the most promising lead‐free one, tin‐halides based perovskite solar cells still suffer from severe bulk‐defect due to easy oxidation of tin divalent tetravalent. Here, a general and effective strategy is delivered modulate microstructure 2D/3D heterogeneous tin‐perovskite absorber films by substituting FAI with FPEABr in FASnI 3 . The introduction 2D phase can induce highly oriented growth 3D it revealed optimal film that embraces grains locates at surfaces grain boundaries. FPEA + capping layer offer reducing atmosphere for vulnerable grains. unique effectively suppresses well‐known Sn 2+ 4+ , as well decreasing defect density, which leads remarkable enhanced device performance 9.38% 14.81% conversion efficiency. certified efficiency 14.03% announces new record moves step last one (12.4%). Besides this breakthrough, work definitely paves way fabricate high‐quality constructing microstructures.

Язык: Английский

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The Main Progress of Perovskite Solar Cells in 2020–2021

Nano-Micro Letters, Год журнала: 2021, Номер 13(1)

Опубликована: Июль 7, 2021

Abstract Perovskite solar cells (PSCs) emerging as a promising photovoltaic technology with high efficiency and low manufacturing cost have attracted the attention from all over world. Both stability of PSCs increased steadily in recent years, research on reducing lead leakage developing eco-friendly lead-free perovskites pushes forward commercialization step by step. This review summarizes main progress 2020 2021 aspects efficiency, stability, perovskite-based tandem devices, PSCs. Moreover, brief discussion development PSC modules its challenges toward practical application is provided.

Язык: Английский

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Optimized carrier extraction at interfaces for 23.6% efficient tin–lead perovskite solar cells

Energy & Environmental Science, Год журнала: 2022, Номер 15(5), С. 2096 - 2107

Опубликована: Янв. 1, 2022

This work provides an efficient way to facilitate both electron and hole extraction in the designated interfaces of perovskite solar cells. A record power conversion efficiency 23.6% for mixed Sn–Pb cell devices is realized.

Язык: Английский

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Design and Simulation of Cs₂BiAgI₆ Double Perovskite Solar Cells with Different Electron Transport Layers for Efficiency Enhancement

Energy & Fuels, Год журнала: 2023, Номер 37(5), С. 3957 - 3979

Опубликована: Фев. 17, 2023

Lead-free Cs2BiAgI6 has garnered a lot of research interest recently due to its suitability as potential absorber layer in the solar cell (SC) architecture owing low cost, good stability, and high efficiency. The main highlight this work includes photovoltaic (PV) performance enhancement double perovskite cells (PSCs) by optimizing optoelectronic parameters absorber, electron transport (ETL), hole (HTL), various interface layers. Solar Cell Capacitance Simulator One dimension (SCAPS-1D) numerical simulation was used optimize absorber-based SCs consisting copper barium thiostannate (CBTS) HTL TiO2, PCBM, ZnO, IGZO, SnO2, WS2 ETLs. role non-lead cesium-based halide improvement SC systematically investigated through variation thickness, doping density, defect density layer, ETL, HTL. device architectures is largely dependent on thickness acceptor combination different ETLs HTLs. We found that ETL-based optimized devices recorded power conversion efficiency (PCE) 23.14, 23.71, 23.69, 22.97, 23.61, 21.72%, respectively. Furthermore, effect series shunt resistances, temperature, capacitance, Mott–Schottky for six estimated along with computation corresponding generation recombination rates, current density–voltage (J–V), quantum (QE) characteristics. PV obtained from comprehensive analysis are finally compared earlier published theoretical experimental reports SCs.

Язык: Английский

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Advances and challenges in understanding the microscopic structure–property–performance relationship in perovskite solar cells

Nature Energy, Год журнала: 2022, Номер 7(9), С. 794 - 807

Опубликована: Сен. 19, 2022

Язык: Английский

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Ionic Liquid Stabilizing High‐Efficiency Tin Halide Perovskite Solar Cells

Advanced Energy Materials, Год журнала: 2021, Номер 11(32)

Опубликована: Июль 2, 2021

Abstract Tin halide perovskites attract incremental attention to deliver lead‐free perovskite solar cells. Nevertheless, disordered crystal growth and low defect formation energy, related Sn(II) oxidation Sn(IV), limit the efficiency stability of Engineering processing from precursor solution preparation film crystallization is crucial tackle these issues enable full photovoltaic potential tin perovskites. Herein, ionic liquid n ‐butylammonium acetate (BAAc) used tune coordination with specific O…Sn chelating bonds NH…X hydrogen bonds. The between BAAc enables modulation in a thin film. resulting BAAc‐containing films are more compact have preferential orientation. Moreover, lower amount Sn(IV) chemical defects found for cells processed show power conversion over 10%. This value retained after storing devices 1000 h nitrogen. work paves way toward controlled tin‐based stable efficient photovoltaics.

Язык: Английский

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Tin perovskite solar cells with >1,300 h of operational stability in N2 through a synergistic chemical engineering approach

Joule, Год журнала: 2022, Номер 6(4), С. 861 - 883

Опубликована: Март 14, 2022

Despite the promising properties of tin-based halide perovskites, one clear limitation is fast Sn+2 oxidation. Consequently, preparation long-lasting devices remains challenging. Here, we report a chemical engineering approach, based on adding Dipropylammonium iodide (DipI) together with well-known reducing agent, sodium borohydride (NaBH4), aimed at preventing premature degradation Sn-HPs. This strategy allows for obtaining efficiencies (PCE) above 10% enhanced stability. The initial PCE remained unchanged upon 5 h in air (60% RH) maximum-power-point (MPP). Remarkably, 96% was kept after 1,300 MPP N2. To best our knowledge, these are highest reported values Sn-based solar cells. Our findings demonstrate beneficial synergistic effect when additives incorporated, highlight important role performance light soaking, and, ultimately, unveil relevance controlling chemistry future improvement perovskite devices.

Язык: Английский

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High‐Performance Tin–Lead Mixed‐Perovskite Solar Cells with Vertical Compositional Gradient

Advanced Materials, Год журнала: 2021, Номер 34(6)

Опубликована: Окт. 22, 2021

Sn-Pb mixed perovskites with bandgaps in the range of 1.1-1.4 eV are ideal candidates for single-junction solar cells to approach Shockley-Queisser limit. However, efficiency and stability mixed-perovskite (PSCs) still lag far behind those Pb-based counterparts due easy oxidation Sn2+ . Here, a reducing agent 4-hydrazinobenzoic acid is introduced as an additive along SnF2 suppress Meanwhile, vertical Pb/Sn compositional gradient formed spontaneously after antisolvent treatment different solubility crystallization kinetics Sn- it can be finely tuned by controlling temperature. Because band structure perovskite dependent on its composition, graded heterojunctions constructed films gradient, which enhance photocarrier separation carrier recombination resultant PSCs. Under optimal fabrication conditions, PSCs show power conversion up 22% excellent during light soaking.

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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Perovskite Solar Cells: A Review of the Recent Advances

Coatings, Год журнала: 2022, Номер 12(8), С. 1089 - 1089

Опубликована: Июль 31, 2022

Perovskite solar cells (PSC) have been identified as a game-changer in the world of photovoltaics. This is owing to their rapid development performance efficiency, increasing from 3.5% 25.8% decade. Further advantages PSCs include low fabrication costs and high tunability compared conventional silicon-based cells. paper reviews existing literature discuss structural fundamental features that resulted significant gains. Key electronic optical properties electron mobility (800 cm2/Vs), long diffusion wavelength (>1 μm), absorption coefficient (105 cm−1). Synthesis methods are considered, with solution-based manufacturing being most cost-effective common industrial method. Furthermore, this review identifies issues impeding large-scale commercialisation actions needed resolve them. The main issue stability particularly vulnerable moisture, caused by inherently weak bonds perovskite structure. Scalability also big spin-coating technique used for laboratory-scale tests not appropriate production. highlights need transition techniques compatible roll-to-roll processing achieve throughput. Finally, discusses future innovations, more environmentally friendly lead-free high-efficiency multi-junction Overall, provides critical evaluation advances, opportunities challenges PSCs.

Язык: Английский

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