Advances in SnO₂ for Efficient and Stable n–i–p Perovskite Solar Cells

Advanced Materials, Год журнала: 2022, Номер 34(27)

Опубликована: Март 8, 2022

Perovskite solar cells (PSCs) based on the regular n-i-p device architecture have reached above 25% certified efficiency with continuously reported improvements in recent years. A key common factor for these breakthroughs is development of SnO2 as an effective electron transport layer devices. In this article, advances are reviewed, including various deposition approaches and surface treatment strategies, to enhance bulk interface properties highly efficient stable PSCs. addition, general materials chemistry associated along corresponding challenges improvement strategies discussed, focusing defects, intrinsic properties, impact characteristics. Finally, some implementations related scalable processes flexible devices highlighted, perspectives future large-scale perovskite modules also provided.

Язык: Английский

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Tin Oxide Electron‐Selective Layers for Efficient, Stable, and Scalable Perovskite Solar Cells

Advanced Materials, Год журнала: 2021, Номер 33(15)

Опубликована: Март 3, 2021

Abstract Perovskite solar cells (PSCs) have become a promising photovoltaic (PV) technology, where the evolution of electron‐selective layers (ESLs), an integral part any PV device, has played distinctive role to their progress. To date, mesoporous titanium dioxide (TiO 2 )/compact TiO stack been among most used ESLs in state‐of‐the‐art PSCs. However, this material requires high‐temperature sintering and may induce hysteresis under operational conditions, raising concerns about its use toward commercialization. Recently, tin oxide (SnO ) emerged as attractive alternative ESL, thanks wide bandgap, high optical transmission, carrier mobility, suitable band alignment with perovskites, decent chemical stability. Additionally, low‐temperature processability enables compatibility temperature‐sensitive substrates, thus flexible devices tandem cells. Here, notable developments SnO perovskite‐relevant ESL are reviewed emphasis placed on various fabrication methods interfacial passivation routes champion Further, techno‐economic analysis materials for large‐scale deployment, together processing‐toxicology assessment, is presented. Finally, perspective how can be instrumental successful module perovskite‐based cell manufacturing provided.

Язык: Английский

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Multifunctional Polymer‐Regulated SnO₂ Nanocrystals Enhance Interface Contact for Efficient and Stable Planar Perovskite Solar Cells

Advanced Materials, Год журнала: 2020, Номер 32(43)

Опубликована: Сен. 21, 2020

Abstract Perovskite solar cells (PSCs) have rapidly developed and achieved power conversion efficiencies of over 20% with diverse technical routes. Particularly, planar‐structured PSCs can be fabricated low‐temperature (≤150 °C) solution‐based processes, which is energy efficient compatible flexible substrates. Here, the efficiency stability planar are enhanced by improving interface contact between SnO 2 electron‐transport layer (ETL) perovskite layer. A biological polymer (heparin potassium, HP) introduced to regulate arrangement nanocrystals, induce vertically aligned crystal growth perovskites on top. Correspondingly, –HP‐based devices demonstrate an average 23.03% rigid substrates open‐circuit voltage ( V OC ) 1.162 high reproducibility. Attributed strengthened binding, obtain operational stability, retaining 97% their initial performance (power efficiency, PCE > 22%) after 1000 h operation at maximum point under 1 sun illumination. Besides, HP‐modified ETL exhibits promising potential for application in large‐area devices.

Язык: Английский

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Passivation and process engineering approaches of halide perovskite films for high efficiency and stability perovskite solar cells

Energy & Environmental Science, Год журнала: 2021, Номер 14(5), С. 2906 - 2953

Опубликована: Янв. 1, 2021

Recent advances on passivation and morphology engineering approaches adopted to obtain high efficiency stability in perovskite solar cells are thoroughly reviewed.

Язык: Английский

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Interpenetrating interfaces for efficient perovskite solar cells with high operational stability and mechanical robustness

Nature Communications, Год журнала: 2021, Номер 12(1)

Опубликована: Фев. 12, 2021

Abstract The perovskite solar cell has emerged rapidly in the field of photovoltaics as it combines merits low cost, high efficiency, and excellent mechanical flexibility for versatile applications. However, there are significant concerns regarding its operational stability robustness. Most previously reported approaches to address these entail separate engineering charge-transporting layers. Herein we present a holistic design layers by synthesizing an interpenetrating perovskite/electron-transporting-layer interface. This interface is reaction-formed between tin dioxide layer containing excess organic halide lead halide. Perovskite cells with such interfaces deliver efficiencies up 22.2% 20.1% rigid flexible versions, respectively. Long-term (1000 h) demonstrated devices show endurance against mechanical-bending (2500 cycles) fatigue. Mechanistic insights into relationship structure performance enhancement provided based on comprehensive, advanced, microscopic characterizations. study highlights integrity important factor designing efficient, operationally-stable, mechanically-robust cells.

Язык: Английский

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Rubidium Fluoride Modified SnO₂ for Planar n‐i‐p Perovskite Solar Cells

Advanced Functional Materials, Год журнала: 2021, Номер 31(17)

Опубликована: Фев. 17, 2021

Abstract Regulating the electron transport layer (ETL) has been an effective way to promote power conversion efficiency (PCE) of perovskite solar cells (PSCs) as well suppress their hysteresis. Herein, SnO 2 ETL using a cost‐effective modification material rubidium fluoride (RbF) is modified in two methods: 1) adding RbF into colloidal dispersion, F and Sn have strong interaction, confirmed via X‐ray photoelectron spectra density functional theory results, contributing improved mobility ; 2) depositing at /perovskite interface, Rb + cations actively escape interstitial sites lattice inhibit ions migration reduce non‐radiative recombination, which dedicates open‐circuit voltage ( V oc ) for PSCs with suppressed In addition, double‐sided passivated PSCs, on surface, p‐methoxyphenethylammonium iodide produces outstanding PCE 23.38% 1.213 V, corresponding extremely small deficit 0.347 V.

Язык: Английский

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Tailored Lattice “Tape” to Confine Tensile Interface for 11.08%‐Efficiency All‐Inorganic CsPbBr₃ Perovskite Solar Cell with an Ultrahigh Voltage of 1.702 V

Advanced Science, Год журнала: 2021, Номер 8(19)

Опубликована: Авг. 8, 2021

Abstract The crystal distortion such as lattice strain and defect located at the surfaces grain boundaries induced by soft perovskite highly determines charge extraction‐transfer dynamics recombination to cause an inferior efficiency of solar cells (PSCs). Herein, authors propose a strategy significantly reduce superficial tensile means incorporating inorganic 2D Cl‐terminated Ti 3 C 2 (Ti Cl x ) MXene into bulk surface CsPbBr film. Arising from strong interaction between atoms in under‐coordinated Pb 2+ lattice, expanded is compressed confined act “tape”, which PbCl bond plays role “glue” immobilizes lattice. Finally, defective healed champion high 11.08% with ultrahigh open‐circuit voltage up 1.702 V achieved on best all‐inorganic PSC, so far highest record for this kind PSCs. Furthermore, unencapsulated device demonstrates nearly unchanged performance under 80% relative humidity over 100 days 85 °C 30 days.

Язык: Английский

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Chlorobenzenesulfonic Potassium Salts as the Efficient Multifunctional Passivator for the Buried Interface in Regular Perovskite Solar Cells

Advanced Energy Materials, Год журнала: 2022, Номер 12(20)

Опубликована: Март 28, 2022

Abstract The interfacial properties for the buried junctions of perovskite solar cells (PSCs) play a crucial role further enhancement power conversion efficiency (PCE) and stability devices. Delicate manipulation interface such as defect density, energy alignment, film quality, etc., guarantees efficient extraction transport photogenerated carriers. Herein, chlorobenzenesulfonic potassium salts are presented novel multifunctional agent to modify tin oxide (SnO 2 )/perovskite regular PSCs. increasing number carbon‐chlorine bonds (CCl) in 2,4,5‐trichlorobenzenesulfonic (3Cl‐BSAK) exhibit interaction with uncoordinated Sn, effectively filling oxygen vacancies SnO surface. Importantly, synergistic effects functional group‐rich organic anions ion achieved reduced carrier recombination, hysteresis. A champion PCE 24.27% open‐circuit voltage ( V OC ) up 1.191 modified devices obtained. unencapsulated maintain 80% their initial after aging at 80 °C 800 h atmosphere 95% 100 d. With 3Cl‐BSAK decoration, high semitransparent PSC 12.83% an average visible light transmittance (AVT) over 27% is also

Язык: Английский

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Graphdiyne: Bridging SnO₂and Perovskite in Planar Solar Cells

Angewandte Chemie International Edition, Год журнала: 2020, Номер 59(28), С. 11573 - 11582

Опубликована: Апрель 7, 2020

The matching of charge transport layer and photoactive is critical in solar energy conversion devices, especially for planar perovskite cells based on the SnO2 electron-transfer (ETL) owing to its unmatched photogenerated electron hole extraction rates. Graphdiyne (GDY) with multi-roles has been incorporated maximize between regarding rate optimization interface engineering towards both crystallization process subsequent photovoltaic service duration. GDY doped fourfold improved mobility due freshly formed C-O σ bond more facilitated band alignment. enhanced hydrophobicity inhibits heterogeneous nucleation, contributing a high-quality film diminished grain boundaries lower defect density. Also, interfacial passivation Pb-I anti-site defects demonstrated via introduction.

Язык: Английский

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Interfacial defect passivation and stress release by multifunctional KPF6 modification for planar perovskite solar cells with enhanced efficiency and stability

Chemical Engineering Journal, Год журнала: 2021, Номер 418, С. 129375 - 129375

Опубликована: Март 18, 2021

Язык: Английский

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