Lead‐Free Halide Perovskite Materials and Optoelectronic Devices: Progress and Prospective

Advanced Functional Materials, Год журнала: 2023, Номер 34(6)

Опубликована: Окт. 27, 2023

Abstract Halide perovskites, in the form of thin films and colloidal nanocrystals, have recently taken semiconductor optoelectronics research by storm, emerged as promising candidates for high‐performance solar cells, light‐emitting diodes (LEDs), lasers, photodetectors, radiation detectors. The impressive optical optoelectronic properties, along with rapid increase efficiencies cells LEDs, greatly attracted researchers across many disciplines. However, most advances made so far terms preparation (colloidal nanocrystals films), devices highest are based on Pb‐based halide which raised concerns over their commercialization due to toxicity Pb. This has triggered search lower‐toxicity Pb‐free perovskites led significant progress last few years. In this roadmap review, different expertise joined together summarize latest progress, outstanding challenges, future directions perovskite regarding synthesis, spectroscopy, devices, guide currently working area well those that will join field future.

Язык: Английский

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Stabilization of Perovskite Lattice and Suppression of Sn²⁺/Sn⁴⁺ Oxidation via Formamidine Acetate for High Efficiency Tin Perovskite Solar Cells

Advanced Functional Materials, Год журнала: 2023, Номер 33(17)

Опубликована: Янв. 31, 2023

Abstract Tin halide lead‐free perovskite solar cells (TPSCs) have received tremendous research interest recently due to their nearly ideal bandgap, broad light absorption, non‐toxicity, and environmental friendliness. However, the uncontrollable crystallization process facile oxidation of Sn 2+ limit further increase power conversion efficiency (PCE). To solve these problems, a series acetates are introduced into precursor solution regulate process. It is revealed that formamidine acetate (FAAc) has strong COSn coordination with compared acetic acid (HAc) methylammonium (MAAc), which can stabilize lattice structure, minimize defect states suppress . Meanwhile, benefiting from this ability, it not only leads large‐size colloidal clusters in but also slows down improves crystallinity tin films. The device FAAc achieved an increased PCE initially 9.84% 12.43%, could maintain 94% its initial value for 2000 h N 2 atmosphere. This work provides feasible strategy depositing high‐quality films low density distortion, will be crucial related photovoltaics other optoelectronic devices.

Язык: Английский

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Development of lead-free perovskite solar cells: Opportunities, challenges, and future technologies

Results in Engineering, Год журнала: 2023, Номер 20, С. 101438 - 101438

Опубликована: Сен. 24, 2023

Despite notable advantages and power conversion efficiency achieved by perovskite solar cells (PSCs), they could not hit the market commercially as are bottlenecked toxicity issue caused metal lead. Lead has proven issues that can harm human beings ecological system to a significant extent. And so, researchers around world have started diving deep into revolutionary sustainable photovoltaics called non-toxic lead-free PSCs for safe environment. This is substitution of lead in with or less toxic substitute metals. review article revolves metals such tin (Sn), germanium (Ge), titanium (Ti), silver (Ag), bismuth (Bi) copper (Cu) their properties, sustainability challenges. also discusses ways undertaken overcome stability efficiency-related challenges encountered commercialization alteration fabrication methods introduction additives. Finally, recent advancements/technologies used predicts future perspective/technologies futuristic applications be implemented PSCs.

Язык: Английский

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A Bifunctional Carbazide Additive For Durable CsSnI₃ Perovskite Solar Cells

Advanced Materials, Год журнала: 2023, Номер 35(26)

Опубликована: Март 30, 2023

Inorganic CsSnI3 with low toxicity and a narrow bandgap is promising photovoltaic material. However, the performance of perovskite solar cells (PSCs) much lower than that Pb-based hybrid Sn-based (e.g., CsPbX3 CH(NH2 )2 SnX3 ) PSCs, which may be attributed to its poor film-forming property deep traps induced by Sn4+ . Here, bifunctional additive carbazide (CBZ) adapted deposit pinhole-free film remove via two-step annealing. The lone electrons NH2 CO units in CBZ can coordinate Sn2+ form dense large grains during phase transition at 80 °C. decomposition reduce annealing 150 °C traps. Compared control device (4.12%), maximum efficiency :CBZ PSC reaches 11.21%, highest reported date. A certified 10.90% obtained an independent testing laboratory. In addition, unsealed devices maintain initial efficiencies ≈100%, 90%, 80% under inert atmosphere (60 days), standard power point tracking (650 h 65 °C), ambient air (100 h), respectively.

Язык: Английский

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Critical assessment of large-scale rooftop photovoltaics deployment in the global urban environment

Renewable and Sustainable Energy Reviews, Год журнала: 2023, Номер 189, С. 114005 - 114005

Опубликована: Ноя. 3, 2023

Язык: Английский

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Over 12% efficient CsSnI3 perovskite solar cells enabled by surface post-treatment with bi-functional polar molecules

Chemical Engineering Journal, Год журнала: 2024, Номер 490, С. 151561 - 151561

Опубликована: Апрель 23, 2024

Язык: Английский

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Engineering Stable Lead‐Free Tin Halide Perovskite Solar Cells: Lessons from Materials Chemistry

Advanced Materials, Год журнала: 2022, Номер 35(25)

Опубликована: Дек. 2, 2022

Abstract Substituting toxic lead with tin (Sn) in perovskite solar cells (PSCs) is the most promising route toward development of high‐efficiency lead‐free devices. Despite encouraging efficiencies Sn‐PSCs, they are still yet to surpass 15% and suffer detrimental oxidation Sn(II) Sn(IV). Since their first application 2014, investigations into properties Sn‐PSCs have contributed a growing understanding mechanisms, both complementary stability. This review summarizes evolution including early developments latest state‐of‐the‐art approaches benefitting stability The degradation pathways associated outlined, followed by describing how composition engineering (A, B site modifications), additive (oxidation prevention), interface (passivation strategies) can be employed as different avenues improve knowledge about these also not limited PSCs applicable other types devices now employing Sn‐based absorber layers. A detailed analysis materials chemistry reveals clear set design rules for stable Sn‐PSCs. Applying strategies highlighted this will essential further efficiency

Язык: Английский

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Comparative Study of the Correlation between Diffusion Length of Charge Carriers and the Performance of CsSnGeI₃ Perovskite Solar Cells

Energy & Fuels, Год журнала: 2022, Номер 36(23), С. 14403 - 14410

Опубликована: Ноя. 11, 2022

Due to their enhanced performance and simplicity in manufacturing, scalability, versatility, lead-halide perovskite-based solar cells (HPSCs) have received much attention the domains of energy. Lead is present nature as a poisonous substance that causes various issues climate human health prevents its further industrialization. Over past few years, there has been noticeable interest exploring some alternative lead-free perovskites. However, owing intrinsic losses, may be achieved from these photovoltaics not up standards. Thus, for purpose efficiency improvement, comprehensive simulation required comprehend cause losses. In current research, an investigation into how employ promisingly efficient lead-free, all-inorganic cesium tin–germanium iodide (CsSnGeI3) perovskites photoactive layer HPSCs was performed. Results exhibited high 12.95% with CsSn0.5Ge0.5I3 perovskite thickness 0.6 μm band gap 1.5 eV at room temperature. High using phenyl-C61-butyric acid methyl ester (PCBM) electron transport material because favorable energy-level alignment material. The research tested defect density depth. results showed carrier diffusion lengths big effect on well HPSC works.

Язык: Английский

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Manipulation of the Buried Interface for Robust Formamidinium‐based Sn−Pb Perovskite Solar Cells with NiO_xHole‐Transport Layers

Angewandte Chemie International Edition, Год журнала: 2023, Номер 62(15)

Опубликована: Фев. 15, 2023

Low band gap tin-lead perovskite solar cells (Sn-Pb PSCs) are expected to achieve higher efficiencies than Pb-PSCs and regarded as key components of tandem PSCs. However, the realization high efficiency is challenged by instability Sn2+ imperfections at charge transfer interfaces. Here, we demonstrate an efficient ideal formamidinium (FA)-based Sn-Pb (FAPb0.5 Sn0.5 I3 ) PSC, manipulating buried NiOx /perovskite interface with 4-hydroxyphenethyl ammonium halide (OH-PEAX, X=Cl- , Br- or I- interlayer, which exhibits fascinating functions reducing surface defects hole transport layer (HTL), enhancing film quality, improving both energy level matching physical contact interface. The effects different anions have been elaborated a 20.53 % obtained OH-PEABr, highest one for FA-based PSCs using HTLs. Moreover, device stability also boosted.

Язык: Английский

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Managing Interfacial Charged Defects with Multiple Active Sited Macrocyclic Valinomycin for Efficient and Stable Inverted Perovskite Solar Cells

Advanced Materials, Год журнала: 2023, Номер 35(51)

Опубликована: Июль 29, 2023

The unavoidably positively and negatively charged defects at the interface between perovskite electron transport layer (ETL) often lead to severe surface recombination unfavorable energy level alignment in inverted solar cells (PerSCs). Inserting interlayers this is an effective approach eliminate defects. Herein, macrocyclic molecule valinomycin (VM) with multiple active sites of ─C═O, ─NH, ─O─ employed as interlayer perovskite/ETL contact simultaneously Combined a series theoretical calculations experimental analyzes, it demonstrated that ─C═O groups VM can immobilize uncoordinated Pb2+ manage defect formation N─H···I hydrogen bonding recompense formamidine vacancies defect. In addition, induces favorable downshift band bending interface, facilitating charge separation boosting transfer. Thanks reduced alignment, fabricated PerSC delivers outstanding power conversion efficiency 24.06% excellent long-term ambient thermal stability. This work demonstrates managing via functional regulating reliable strategy boost performance PerSCs.

Язык: Английский

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