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Recent strategies to improve moisture stability in metal halide perovskites materials and devices

Journal of Energy Chemistry 2022年第2期31卷 219-235页

作者： Chenxiao Zhou alexey.b.tarasov Eugene A.Goodilin Pengwan Chen Hao Wang Qi Chen School of Materials Science and Engineering Beijing Institute of TechnologyBeijing 100081China Faculty of Materials Science Lomonosov Moscow State UniversityLenin Hills119991 MoscowRussia Department of Chemistry Lomonosov Moscow State UniversityLenin Hills119991 MoscowRussia State Key Laboratory of Explosion Science and Technology Beijing Institute of TechnologyBeijing 100081China beijing Institute of Technology Chongqing Innovation Center Chongqing 401120China

At present,the stability of the new generation of solar cells based on hybrid perovskites is the bottleneck for their practical *** effects,high temperature,ultraviolet light,humidity and other known or still unknown factors might cause reduction of effectiveness or even irreversible loss of materials properties due to decomposition of functional layers within perovskite solar cells(PSCs).These factors alone have a serious impact on each component of the device,while their combinations lead to much more complicated effects and *** review focuses on the stability of PSCs and the degradation of the device in a humid *** assess the instability factors and deep-seated principles of evolution of the device structure in a humidity environment with the emphasis on the influence on their *** related solutions are reviewed from the perspective of the encapsulation,perovskite active layer,carrier transport layer and *** with the latest research,we believe that the waterproof strategy of PSCs requires either tight encapsulation or thorough modifications in the device ***,it is important to develop feasible strategies to improve the overall device stability over humid according to the target characteristics of various devices.

关键词： Perovskite solar cells Water Stability Composition Encapsulation

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How to stabilize standard perovskite solar cells to withstand operating conditions under an ambient environment for more than 1000 hours using simple and universal encapsulation

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Journal of Energy Chemistry 2023年第3期78卷 246-252,I0008页

作者： Nikolai A.belich Andrey A.Petrov Pavel A.Ivlev Natalia N.Udalova Alla A.Pustovalova Eugene A.Goodilin alexey.b.tarasov Laboratory of New Materials for Solar Energetics Faculty of Materials ScienceLomonosov Moscow State University119991 MoscowRussia Department of Chemistry Lomonosov Moscow State University119991 MoscowRussia

We introduce a simple and universal scalable encapsulation strategy for perovskite solar cells based on thermal vacuum evaporation of MgF2or MoO3-xcapping layer followed by sealing the device with glass and UV-curable *** proposed encapsulation method is beneficial to most of the other known encapsulation approaches being fully harmless to perovskite and transporting layers and processible at room *** deposition of the capping layer promotes efficient removal of water,oxygen and organic solvent residuals from the device prior to sealing and could be easily performed using standard equipment for metal electrode *** proposed strategy is transferrable to any lab-scale perovskite solar cell prototypes regardless of their geometry and architecture and results in excellent stability of the devices in ambient air and long operating *** the 1000 hours stability test at ambient air(30%-60% RH),the cells preserved 92.9% of their initial efficiency on average under 1 Sun illumination at constant maximum power point tracking(MPPT,ISOS-L-1) and over 96% under sto rage in the dark(ISOS-D-1),thus evidencing for the high effectiveness of the proposed encapsulation approach.

关键词： Perovskite solar cells Halide perovskites Encapsulation High stability ISOS-L-1

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Evidence for polarization-induced phase transformations and degradation in CH_(3)NH_(3)PbI_(3)

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Nano Research 2023年第7期16卷 9435-9442页

作者： Aleksei Yu.Grishko Maria A.Komkova Ekaterina I.Marchenko Alexandra V.Chumakova alexey.b.tarasov Eugene A.Goodilin Andrei A.Eliseev Department of Materials Science MSU-BIT UniversityShenzhen 517182China Department of Chemistry Lomonosov Moscow State UniversityMoscow 119991Russia Department of Materials Science Lomonosov Moscow State UniversityMoscow 119991Russia European Synchrotron Radiation Facility F-38042 GrenobleFrance

In solar cells,hybrid halide perovskites operate under constant bias,thus their stability towards electric field-induced degradation is of key *** we report on evidence of previously unidentified electric field-induced transitions and degradation path of CH_(3)NH_(3)PbI_(3)(MAPbI_(3))using elemental and phase *** films of MAPbI_(3) were deposited onto 1-2μm-pitch interdigitated electrodes and subjected to direct current(DC)-*** MAPbI_(3) layer polarized withbution to methylammonium-rich MAPbI_(3)-y(ybI3(xboth methylammonium and iodine provokes degradation of MAPbI_(3).Using nanofocus grazing-incidence wide-angle X-ray scattering(GIWAXS),we unambiguously showed that the bias voltage induces the transformation ofβ-MAPbI_(3) to metastableδ-MAPbI_(3) polymorph via alignment of polar organic cation with the electric *** transformation is partially reversible upon field ***,once formed,δ-MAPbI_(3) disrupts the morphology of pristine film and undergoes decomposition toβ-MAPbI_(3)(β-MAPI)and PbI_(2).With the aforementioned compositional and phase changes,only MA-rich part serves as the charge separation layer,while the I-rich excitation is blocked with the PbI_(2) barrier serving as holes trapping *** observations reveal the intermediate steps in electric-field-driven degradation of halide perovskites and show the role of polar cations in the process,which is instructive for further material design with higher stability metrics.

关键词： halide perovskites stability degradation electric field ionic conductivity stoichiometry

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Uranium Isotope Variations(234U/238U and 238U/235U)and behavior of U-Pb Isotope System in the Vershinnoe Sandstone-Type Uranium Deposit,Vitim Uranium Ore District,Russia

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Journal of Earth Science 2022年第2期33卷 317-324页

作者： V.N.Golubev I.V.Chernyshev b.T.Kochkin N.N.tarasov G.V.Ochirova A.V.Chugaev Institute of Geology of Ore Deposits PetrographyMineralogy and GeochemistryRussian Academy of SciencesMoscow 119017Russia

The U-Pb isotope system and uranium isotope composition(235U/238U and 234U/238U)were studied in a number of samples from the vertical section of the uranium ore body at the Vershinnoe sandstone-type deposit,Vitim uranium ore district,*** parameters were determined to broadly *** of the 234U/238U ratio from the equilibrium value indicate that the uranium ore was not completely conserved during the postore stage,and uranium was determined to continue migrating at the *** of the U-Pb isotope age value and 234U/238U isotope ratio provides an insight into the migrate direction of uranium in the ore *** broad variations(137.377–137.772)in the 238U/235U ratio over the vertical section of the ore body can be explained by the different settings of the samples relative to the ore deposition front and changes in the redox conditions when this front *** fact that theδ238U and K234/238 values are correlated indicates that the transfer of the 234U isotope into the aqueous phase may have been coupled with isotope fractionation in the 238U-235U system during the postformation uranium migration within the orebody.

关键词： sandstone-type uranium deposit U-Pb age uranium isotope composition ore deposit geology

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Advances in the development of new biomarkers for Alzheimer’s disease

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Translational Neurodegeneration 2022年第1期11卷 601-624页

作者： Timofey O.Klyucherev Pawel Olszewski Alena A.Shalimova Vladimir N.Chubarev Vadim V.tarasov Misty M.Attwood Stina Syvänen Helgi b.Schiöth Department of Neuroscience Functional PharmacologyUniversity of Upp-salaUppsalaSweden Department of Pharmacology Institute of PharmacyI.M.Sechenov First Moscow State Medical UniversityMoscowRussia Institute of Translational Medicine and biotechnology I.M.Sechenov First Moscow State Medical UniversityMoscowRussia Department of Public Health and Caring Sciences Rudbeck LaboratoryUppsala UniversityUppsalaSweden.

Alzheimer’s disease(AD)is a complex,heterogeneous,progressive disease and is the most common type of neurodegenerative *** prevalence of AD is expected to increase as the population ages,placing an additional burden on national healthcare *** is a large need for new diagnostic tests that can detect AD at an early stage with high specificity at relatively low *** development of modern analytical diagnostic tools has made it possible to determine several biomarkers of AD with high specificity,including pathogenic proteins,markers of synaptic dysfunction,and markers of inflammation in the *** is a considerable potential in using microRNA(miRNA)as markers of AD,and diagnostic studies based on miRNA panels suggest that AD could potentially be determined with high accuracy for individual *** of the retina with improved methods of visualization of the fundus are also showing promising results for the potential diagnosis of the *** review focuses on the recent developments of blood,plasma,and ocular biomarkers for the diagnosis of AD.

关键词： Alzheimer’s disease Amyloid beta peptides biomarkers blood Cytokines Inflammation MicroRNA Ocular biomarkers

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TNT和有机染料废水的光催化氧化动力学特性

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火炸药学报 2005年第4期28卷 5-8,17页

作者：张东翔张凌云黎汉生 tarasov V V 北京理工大学化工与环境学院北京100081 俄罗斯门捷列夫化工大学莫斯科125190

利用光催化氧化技术能有效处理各类有机废水,具有高效、低选择性和不产生二次污染的特点,探讨了循环式浆态光催化反应器中有机染料和TNT模拟生产废水的光催化氧化特性以及光催化氧化动力学。基于羟基自由基生成、扩散以及羟基自由基与... 详细信息

利用光催化氧化技术能有效处理各类有机废水,具有高效、低选择性和不产生二次污染的特点,探讨了循环式浆态光催化反应器中有机染料和TNT模拟生产废水的光催化氧化特性以及光催化氧化动力学。基于羟基自由基生成、扩散以及羟基自由基与污染物分子的反应,建立了相应的光催化氧化动力学模型。结果表明,采用光催化氧化技术去除有机染料和TNT效果明显。光照时间为6 h时,在一定的初始TNT浓度下,模拟红水中TNT去除率达90%以上。对不同染料和TNT不同初始浓度下的光催化氧化反应动力学研究表明,此过程符合拟一级动力学。所提出的光催化氧化动力学模型能够很好地描述有机染料和TNT的光催化氧化过程。

关键词：物理化学 TNT 有机染料光催化氧化动力学废水

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末次盛冰期以来全球湿润状况的地质证据──全球古湖泊数据库及其湖水位变化的大尺度时空分析

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湖泊科学 1997年第3期9卷 201-210页

作者：秦伯强 S.P.Harrison 于革 P.E.tarasov b.Damnati 中国科学院南京地理与湖泊研究所南京210008 DynamicsPalaeoclimatologyGroup LundUniversityLundSweden

介绍了正在建设中的全球湖泊数据库的情况，以及该数据库的水位资料所反映的晚更新世末期以来全球湿润状况的变化。通过大尺度湖水位变化的时空分析，结果显示当今湖泊水位状态较历史时期而言，位于低纬干旱或半干旱地区的湖泊水位较低... 详细信息

介绍了正在建设中的全球湖泊数据库的情况，以及该数据库的水位资料所反映的晚更新世末期以来全球湿润状况的变化。通过大尺度湖水位变化的时空分析，结果显示当今湖泊水位状态较历史时期而言，位于低纬干旱或半干旱地区的湖泊水位较低，而中纬及高纬湿润地区的湖泊水位较高。自末次冰盛期以来，北美大陆中南部地区湖泊水位自高至低，反映出该地区气候条件由湿变干，至早、中全新世达最干旱。而在非洲及南亚季风地区，冷期偏干，暖期偏湿。特别是在早、中全新世的温暖时期，为历史上最湿润时期。北半球中纬度地带的气候干湿变化与北半球冰盖的存在及其消融导致的西风带的南北摆动有关；而北半球季风区在早、中全新世出现的高潮面与北半球夏季辐射的增加有密切联系。

关键词：湖泊古湖泊数据库湖水水位末次盛冰期

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