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Surface Halide Inversion Mitigates Voltage Losses in Wide-Bandgap Perovskite for Efficient Tandem
Angewandte Chemie - International Edition. 2026. Vol. 65. No. 2. Article e12989.
Li Y., Sun N., Jiang X., Fu S., Chen H., Feng B., Weng Q., Guo X., Cui Z., Li W., Zhu X., Zhang W., Li X., Andrey S. Vasenko, Fang J.
Substantial energy loss at the wide-bandgap (WBG) perovskite/fullerene interface poses a fundamental bottleneck for efficient all-perovskite tandem solar cells (APTSCs). Surface defects of WBG perovskite are a known source of non-radiative recombination and have been well-passivated, but this interface still remains with low quasi-Fermi level splitting (QFLS) with considerable voltage loss. Here, we reveal another critical source of the interfacial loss, that WBG perovskite surface features an iodine-rich nature with a locally narrower bandgap (Eg). The simulations reveal that the narrow local Eg induces serious non-radiative recombination at both surface and bulk regions, and the bromine-rich is preferable with aligned energy levels. From this mechanistic insight, we systematically compared distinct strategies of surface polishing, bromine compensation and halide inversions via functional agents. Comparably, inverting surface into a bromine-rich via cesium fluoride (CsF) demonstrates as the most effective pathway for less undesirable recombination and higher QFLS. Additionally, Cs/F substitutions can strengthen surface lattice, significantly enhancing the phase stability. Consequently, we achieve a champion efficiency of 20.89% with an open-circuit voltage (VOC) of 1.368 V for WBG perovskite photovoltaics. After stacking to tin-lead subcell, an impressive efficiency of 29.15% in APTSCs is realized, coupled with good T90 operational stability of 1000 h.
Гущина В. А., Russian Journal of Inorganic Chemistry 2024 Vol. 69 No. 6 P. 940–948
Currently, ABX3 nanoparticles (NPs) based on lead halides attract the attention due to their unique optical properties and a wide range of applications. The preparation of NPs with lead as a partial or complete replacement is particularly interesting because of the toxicity of this chemical element and most of its compounds. In this study, we propose a ...
Added: May 6, 2026
Yasnitsky L., Голдобин М. А., Мезенцев А. С., Прикладная математика и вопросы управления 2025 № 2 С. 99–116
Представлен обзор современных методов и основанных на них программных
инструментах, применяемых для математического моделирования серийных производственных процессов с целью снижения брака и повышения качества производимых изделий. Перечисляются группы работ, нацеленных на обнаружение и классификацию дефектов, работ, в которых решаются задачи прогнозирования образования дефектов и определения значимости параметров, работ направленных на поиск
оптимального сочетания технологических параметров изготовления изделий, ...
Added: May 5, 2026
Morozov E. V., Demin A. S., Borovitskaya I. V. et al., Inorganic Materials: Applied Research 2026 Vol. 17 No. 3 P. 619–626
This article presents the results of experiments on the impact of powerful pulsed ion-plasma and
electron flows generated in the working chamber of the Plasma Focus PF-5M installation during each highvoltage
discharge on a model aluminum alloy B95. It is shown that the general characteristics of the alloy’s
damage upon exposure to pulsed flows of helium ions (HI) ...
Added: May 4, 2026
Pavlenko V. I., Bondarenko G.G., Cherkashina N. I. et al., Inorganic Materials: Applied Research 2026 Vol. 17 No. 2 P. 276–282
A composite material based on polyethylene, boron carbide (B4C), and bismuth oxide (Bi2O3) is
synthesized by the method of joint cryogenic milling of all components in liquid nitrogen environment followed
by pressing. The effect of cryogenic milling on the distribution of fillers in a composite is studied and
the prospects of using this method are assessed in comparison ...
Added: April 9, 2026
Черкашина Н. И., Павленко В. И., Bondarenko G. et al., Перспективные материалы 2026 № 4 С. 14–26
В данной работе представлен синтез гибкого полимерного композита для защиты от радиации на основе каучуковой матрицы и оксидов редкоземельных металлов, таких как Dy2O3 и Gd2O3, предназначенного для создания радиационно-защитных экранов и средств индивидуальной защиты. Исследованы его физико-механические характеристики: составы с добавлением оксида диспрозия имеют плотность от 1,31 до 2,44 г/см3, предел прочности при растяжении от ...
Added: April 2, 2026
Chowde Gowda C., Alexey Kartsev, Tiwari N. et al., Journal of Materials Chemistry C 2024 Vol. 12 No. 46 P. 18691–18703
Two-dimensional (2D) chromium telluride Cr2Te3 exhibits strong ferromagnetic ordering with high coercivity at low temperatures and paramagnetic behavior when approaching room temperature. The spin states of monolayer Cr2Te3 show ferromagnetic ordering in the ground state. In situ Raman analysis reveals a reversible structure transformation and hence proves ferromagnetic to paramagnetic transition during low-temperature heating cycles (0–25 °C). The magnetic ...
Added: March 16, 2026
Argunov E., Alexey I. Kartsev, Computational Materials Science 2024 Vol. 244 Article 113192
Magnetothermopower and giant magnetoresistance in spinel-type compound has attracted a lot of attention recently. Ab initio computations of the electronic structure and the Seebeck coefficient of the structure are reported. The mixed nature of magnetism was identified to be caused by the competition between ferromagnetic and anti-ferromagnetic impacts, with the corresponding determined exchanged parameters: meV, meV, meV. Seebeck coefficient and electrical conductivity of the compound in the temperature range of K along with its ...
Added: March 16, 2026
Xiao Y., Xue W., Xu N. et al., Rare Metals 2025 Vol. 44 No. 11 P. 8757–8768
Complete collection of target fluids and effective capture of biomolecules are essential when designing and fabricating sensor electrodes. Assembling a conductive metal–organic framework (MOF) film onto a high-surface-area porous aerogel to create a three-dimensional (3D) hierarchically ordered structure represented an effective strategy for fabricating sensor electrodes for body fluid detection. In this study, high-precision, confined ...
Added: March 2, 2026
Zhavoronok E. S., Lenkova K. A., Matrenina A. V. et al., Protection of Metals and Physical Chemistry of Surfaces 2025 Vol. 61 No. 5 P. 1231–1238
This study investigated two groups of surgical suture materials—nonabsorbable (polyethylene terephthalate,
polyamide, and silk) and absorbable (glycolic/lactic acid copolymer)—before and after accelerated aging. The analysis employed tensile strength testing, Fourier-transform infrared (FTIR) spectroscopy, and differential scanning calorimetry (DSC). Following domestic and international standards for polymer aging, the samples were subjected to the following initial accelerated aging ...
Added: February 19, 2026
Mehrabi-Kalajahi S., Vasigh S. A., Yousefi Bavili H. et al., Materials Advances 2026 Vol. 7 No. 2 P. 1127–1137
A series of monometallic catalysts, such as Fe3O4, CoO, NiO, and CuO, along with their entropy-stabilized nanoparticles [(Fe,Co,Ni,Cu)3O4 medium-entropy oxide (MEO)], were synthesized and subsequently utilized for the solvent-free and selective aerobic oxidation of benzyl alcohol when supported on graphene oxide (GO). The resulting nanocomposites underwent characterization through various techniques including X-ray diffraction (XRD), scanning electron ...
Added: February 18, 2026
Samoilova O., Pratskova S., Plotnikova P. et al., Materials Letters 2026 Vol. 403 Article 139506
Herein, the positive effect of Pt doping on the high-temperature oxidation of AlCoCrNiPt0.1 multi-principal element alloy (MPEA) is demonstrated. It is shown that platinum is not separated as a secondary phase; rather, it is dissolved in the solid solution phase. The studied alloy exhibited good resistance to high-temperature oxidation during a 100-hour isothermal holding at ...
Added: February 18, 2026
Mehrabi-Kalajahi S., Ostovari Moghaddam A., Vasigh S. A. et al., Industrial & Engineering Chemistry Research 2025 Vol. 64 No. 36 P. 17495–17506
The growing demand for noble metal-free heterogeneous catalysts in selective, solvent-free oxidation reactions faces a persistent challenge: balancing high activity with practical scalability. Addressing this gap, we present a scalable route for the synthesis of the (MnFeCuCoNi)3O4 high-entropy oxide (HEO) catalyst and its composite with reduced graphene oxide (HEO-rGO). Comprehensive characterizations, including X-ray diffraction (XRD), ...
Added: February 18, 2026
Vyacheslav D. Neverov, Karabassov T., Andrey V. Krasavin et al., Research 2026 Vol. 9 Article 1087
Majorana zero modes (MZMs) localized in vortex cores of topological superconductors are widely regarded promising building blocks for fault-tolerant quantum computation. However, their unambiguous detection is hindered by the extremely small energy spacing separating them from conventional Caroli-de Gennes-Matricon states. Using a microscopic Bogoliubov-de Gennes approach, we demonstrate that nonmagnetic impurities, rather than suppressing, can ...
Added: February 17, 2026
S. A. Novikova, Karpov M. S., A. B. Yaroslavtsev, Russian Journal of Electrochemistry 2025 Vol. 61 No. 12 P. 817–843
The state-of-the-art in investigations in the field of cathode materials based on lithium–cobalt double phosphate for lithium-ion rechargeable batteries is surveyed. The specific features of the LiCoPO4 crystal structure, the transfer rate of charge carriers, the main synthetic methods of preparation, and the electrochemical characteristics of LiCoPO4-based cathodes such as discharge capacity, charge–discharge rate, and cyclability ...
Added: February 17, 2026
Manin A., Lysova A. A., Stenina I. et al., Membranes and Membrane Technologies 2025 Vol. 7 No. 4 P. 207–216
Abstract: Anion-exchange membranes based on cardo polybenzimidazole and zinc(II) ions with various molar ratios of metal ions (0, 0.05, 0.25, 0.50, and 1.00) were prepared by casting solutions of metal–polymer complexes. The introduction of zinc(II) ions into the structure of cardo polybenzimidazole is accompanied by the formation of a cross-linked polymer matrix due to the ...
Added: February 17, 2026
Voropaeva D., Trofimenko N. A., S. A. Novikova et al., Membranes and Membrane Technologies 2025 Vol. 7 No. 2 P. 112–124
Modern studies in the field of lithium metal batteries focus on the development of safe and stable electrolytes with high ionic conductivity and electrochemical stability. In this context, promising materials are gel polymer electrolytes based on perfluorosulfonic acid cation-exchange membranes modified with inorganic fillers and solvated with aprotic solvents. This study addresses Nafion® composite membranes ...
Added: February 17, 2026
Li S., Novikova S., Stenina I. et al., Mendeleev Communications 2025 Vol. 35 No. 5 P. 560–562
A sulfur–reduced graphene oxide (rGO) composite was investigated as a cathode material for lithium–sulfur batteries. The cathode material containing both monoclinic (g-S) and orthorhombic (a-S) sulfur and rGO exhibits excellent electrochemical performance. The discharge capacity of (a+g)S@rGO in Li–S battery at C/8 is 950 and 620 mAh g−1 for cycles 1 and 20, respectively. © 2025 ...
Added: February 17, 2026
Do T. T., Xing J., Liu S. et al., APL Materials 2025 Vol. 13 No. 9 Article 091111
Semiconductor lead halide perovskites have attracted significant attention for various applications. Understanding the impact of material composition on optical properties is essential for optimizing device performance. Here, we performed magneto-optical spectroscopy on high-quality bulk CsPbBr3, MAPbBr3, and MAPbI3 single crystals under magnetic fields of up to 30 T. The results revealed distinctive excitonic responses to the magnetic ...
Added: January 26, 2026
Менушенков А. П., Kagan M., Успехи физических наук 2026 Т. 196 № 1 С. 28–47
Recently, using X-ray free-electron laser radiation, the érst direct experimental evidence of the existence of a real-space paired state of charge carriers was obtained in the parent compound BaBiO3 of the bismuthate family of high-temperature superconductors (HTSCs), whose perovskite-like structure is similar to that of cuprate HTSCs. This conérmed the fundamental premises of our previously ...
Added: January 16, 2026
Taye B., Bi Z., Zhilenkov A. et al., The Journal of Physical Chemistry Letters 2026 Vol. 17 No. 2 P. 685–690
Interfacial defects remain a key limitation of the performance of perovskite solar cells (PSCs). Using first-principles density functional theory (DFT) and SCAPS-1D device simulations, we examine how sulfonate and primary amine salts can jointly passivate the SnO2/perovskite buried interface. The sulfonate group forms strong S–O–Sn bonds with surface Sn atoms, while the ammonium cation anchors ...
Added: December 29, 2025
Zhu X., Jiang X., Fu S. et al., Advanced Energy Materials 2025 Vol. 15 No. 47 Article e03666
Perovskite solar cells (PSCs), as a promising photovoltaic technology, have achieved remarkable progress in efficiency. However, perovskite with soft-lattice nature inherently suffers from severe iodine losses under photothermal operation, leading to the irreversible degradation in their photovoltaic performance, thereby remaining a great challenge to achieving durable PSCs. Here, electrostatic iodine regulation is reported by rational ...
Added: October 4, 2025
Zarudnyaya A., Segal G., Morozov A. et al., Applied Physics Letters 2025 Vol. 126 No. 26 Article 262106
CsSnI3 perovskite is a thin-film semiconductor with high intrinsic conductivity for various device applications (thermoelectric, photovoltaics, etc.). Stoichiometric CsSnI3 has high-density defects and structural imperfections affecting device performance. In this work, we made an investigation on A-site cation engineering to evaluate the correlation between structural and transport parameters for effective operation in rectifying devices. Here, ...
Added: October 1, 2025
Zheng Y., Zheng T., Luo S. et al., Small 2025 Vol. 21 No. 39 Article e05659
A complementary passivation strategy employing the simultaneous use of phenylethylammonium iodide (PEAI) and ethylhydrazinoacetate hydrochloride (EHACl) is developed to mitigate multiple surface defects in perovskite films. PEAI mainly aims at vacancy defects and tends to induce quasi-2D/3D interface reconstruction, while rich Lewis base sites within EHACl enable it to selectively passivate Lewis acid defects such ...
Added: August 15, 2025
Tan J., Jiang X., Liu D. et al., The Journal of Physical Chemistry Letters 2025 Vol. 16 No. 30 P. 7659–7665
Two-dimensional (2D) Ruddlesden–Popper (RP) perovskites are considered as promising optoelectronic materials due to their intriguing broadband emission properties. However, the origin of the broadband emission in RP perovskites remains a controversial issue. Herein, we have systematically analyzed the exciton behavior and luminescence properties of 2D (PEA)2PbI4. Our calculations demonstrate that 2D (PEA)2PbI4 exhibits significant quantum confinement ...
Added: July 25, 2025