Advances in inverted perovskite solar cells

Nature Photonics, Год журнала: 2024, Номер unknown

Опубликована: Окт. 28, 2024

Язык: Английский

---

Optimizing the structural, optical and photovoltaic properties of Mn-doped perovskite solar cells

Results in Optics, Год журнала: 2024, Номер 15, С. 100663 - 100663

Опубликована: Март 25, 2024

Perovskite solar cells (MAPbI2Br or CH3NH3I2Br) are the subject of this thorough examination their optical, structural, and photovoltaic properties. These MAPbI2Br were prepared by sol–gel spin-coating process to make films both undoped Mn2+-doped materials. In addition, band gap energy (Eg) exhibited a steady downward trend as doping levels increased. The largest drop was observed at 4 % Mn2+ doping, when UV–Vis spectroscopy measured an Eg value 1.88 eV. This decrease in is essential improving MAPbI2Br's functionality. Furthermore, compared that used pure perovskite cells, efficiency manufactured shown significant improvement. Analyzing current–voltage (J-V) characteristics revealed produced with film had dramatically improved showed open-circuit voltage 1.02, fill factor 0.74, short-circuit current density 8.10 mA/cm2, impressive power conversion 6.14 %.

Язык: Английский

---

Surface Passivation with Tailoring Organic Potassium Salt for Efficient FAPbI₃ Perovskite Solar Cells and Modules

Advanced Functional Materials, Год журнала: 2024, Номер unknown

Опубликована: Июнь 3, 2024

Abstract Passivating surface defects on perovskite films with tailored functional materials has emerged as one of the most effective strategies for achieving high‐performance solar cells (PSCs). Among existing material selections, potassium salts stand out their passivation surrounding grain boundaries. However, widely used are inorganic and only soluble in highly polar solvents, which limits practical application passivation. Herein, a novel organic salt (KCFSO), multiple groups good solubility low isopropanol, is reported to function post‐treatment agent perovskite. Combined experimental results theoretical calculations, formed intermolecular interactions between KCFSO revealed play vital role determining defect effect. Thus, KCFSO‐modified film shows more uniform potential distribution, dramatically decreased density, improved charge transfer, leading champion power conversion efficiency (PCE) 25.11%, stability derived PSCs. As demonstration scalability, centimeter‐sized PSCs 5 cm × mini‐modules also demonstrate impressive PCEs 24.17% 20.18%, respectively. These findings provide insights into passivator design principles achieve efficient stable photovoltaics.

Язык: Английский

---

Ultra-High 1.27 V V_OC of Pure CsPbI₃ Perovskite Solar Cells with an Efficiency of 21.8%

ACS Energy Letters, Год журнала: 2024, Номер unknown, С. 4817 - 4826

Опубликована: Сен. 12, 2024

Язык: Английский

---

All‐In‐One Additive Enabled Efficient and Stable Narrow‐Bandgap Perovskites for Monolithic All‐Perovskite Tandem Solar Cells

Advanced Materials, Год журнала: 2024, Номер unknown

Опубликована: Ноя. 16, 2024

Abstract Hybrid tin‐lead (Sn‐Pb) perovskites have garnered increasing attention due to their crucial role in all‐perovskite tandem cells for surpassing the efficiency limit of single‐junction solar cells. However, easy oxidation Sn 2+ and fast crystallization Sn‐based perovskite present significant challenges achieving high‐quality hybrid Sn‐Pb films, thereby limiting device's performance stability. Herein, an all‐in‐one additive, 2‐amino‐3‐mercaptopropanoic acid hydrochloride (AMPH) is proposed, which can function as a reducing agent suppress formation 4+ throughout film preparation. Furthermore, strong binding between AMPH precursor significantly slows down process, resulting with enhanced crystallinity. The remaining its products within contribute improves resistance substantial reduction defect density, specifically vacancies. Benefiting from multifunctionalities AMPH, power conversion (PCE) 23.07% achieved narrow‐bandgap best‐performing monolithic cell also exhibits PCE 28.73% (certified 27.83%), among highest reported yet. devices retain over 85% initial efficiencies after 500 hours continuous operation at maximum point under one‐sun illumination.

Язык: Английский

---

Crown Ethers with Different Cavity Diameters Inhibit Ion Migration and Passivate Defects toward Efficient and Stable Lead Halide Perovskite Solar Cells

ACS Nano, Год журнала: 2024, Номер 18(33), С. 22533 - 22547

Опубликована: Авг. 8, 2024

Organic–inorganic hybrid metal halide perovskite solar cells have been considered as one of the most promising next-generation photovoltaic technologies. Nevertheless, defects and Li+ ionic migration will seriously affect power conversion efficiency stability formal device. Herein, we designed two crown ether derivatives (PC12 PC15) with different cavity diameters, which selectively bind to cations. It is found that PC15 in precursor solution can actively regulate nucleation crystallization processes passivate uncoordinated Pb2+ ions, while PC12 at interface between layer hole-transporting effectively inhibit ions reduce nonradiative recombination losses. Therefore, act "lubricant" defect passivators, well inhibitors ion migration, when they are synergistically applied surface bulk layer. Consequently, optimized device achieved a champion 24.8% significantly improved humidity, thermal, light stability.

Язык: Английский

---

Research Progress on Stability of FAPbI₃ Perovskite Solar Cells

Crystal Research and Technology, Год журнала: 2025, Номер unknown

Опубликована: Янв. 8, 2025

Abstract The formamidinium lead iodide (FAPbI 3 ) perovskite has emerged as a promising material for high‐efficiency photovoltaic applications. Although power conversion efficiency of more than 26% been achieved, stability issues have hindered its commercial application. In this study, the FAPbI under adverse conditions such humidity, oxygen, ultraviolet light, and temperature fluctuations is systematically reviewed. known effective strategies improving are discussed. Current studies shown that technologies doping, halide alloying, additive manufacturing engineering, interface modification identified in mitigating phase transitions enhancing environmental durability. Encapsulation technology further improves moisture heat resistance. Compared with other stabilization strategies, doping alloying can address effects narrowing absorption edge. Interface engineering an essential understanding mechanism, which will greatly improve problem practical application . This paper also looks forward to future research directions development trends.

Язык: Английский

---

Strategic Integration of Machine Learning in the Design of Excellent Hybrid Perovskite Solar Cells

The Journal of Physical Chemistry Letters, Год журнала: 2025, Номер unknown, С. 738 - 746

Опубликована: Янв. 12, 2025

The photoelectric conversion efficiency (PCE) of perovskites remains beneath the Shockley-Queisser limit, despite its significant potential for solar cell applications. present focus is on investigating multicomponent perovskite candidates, particularly application machine learning to expedite band gap screening. To efficiently identify high-performance perovskites, we utilized a data set 1346 hybrid organic–inorganic and employed 11 models, including decision trees, convolutional neural networks (CNNs), graph (GNNs). Four descriptors were high-throughput screening: sine matrix, Ewald sum atom-centered symmetry functions (ACSF), many-body tensor representation (MBTR). results indicated that LightGBM CatBoost somewhat surpassed XGBoost in tree but random forests lagged. Among CNN models utilizing same four descriptors, CustomCNN VGG16 Xception, while EfficientNetV2B0 exhibited least favorable performance. When matrix served as adjacency matrices GNN GCSConv considerable improvement over GATConv slight advantage GCNConv. Significantly, outperformed other when with matrix. ideal combination algorithms identified was MBTR + CustomCNN, an R2 0.94. Subsequently, three exhibiting appropriate Heyd–Scuseria–Ernzerhof (HSE06) gaps define defects. them, CH3C(NH2)2SnI3 superior performance both vacancy substitutional defects compared C3H8NSnI3 (CH3)2NH2SnI3. This screening method establishes robust foundation selecting materials exceptional properties.

Язык: Английский

---

In situ Crosslinked Robust Molecular Zipper at the Buried Interface for Perovskite Photovoltaics

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Фев. 16, 2025

Abstract The brittle buried interface, characterized by weak adhesion to the substrate, numerous imperfections, and unfavorable strain, poses a significant challenge that impairs overall performance long‐term stability of perovskite solar cells (PSCs). Herein, robust molecular zipper is constructed through in situ polymerization self‐assembly monomer 4‐vinylbenzoic acid (VA), tightly link interface substrate n‐i‐p PSCs with an adhesive strength as high 10.77 MPa. modified exhibits improved morphology, suppressed defects, released matched energy level alignment. resulting deliver absolute gain ≥1.67% champion power conversion efficiency based on both one‐step deposition protocol two‐step one, demonstrating universality this strategy across different film‐processing scenarios. unencapsulated can retain 94.2% their initial after 550 h linear extrapolated T 90 value 1230 h, per ISOS‐L‐2 protocol. This work provides facile reinforce PSCs.

Язык: Английский

---

Effects of light irradiation on the photovoltaic performance and crystal lattices of organic–inorganic perovskites in solar cells

Next Energy, Год журнала: 2025, Номер 8, С. 100263 - 100263

Опубликована: Март 20, 2025

Язык: Английский

---