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Mediating the Local Oxygen‑Bridge Interactions of Oxysalt/Perovskite Interface for Defect Passivation of Perovskite Photovoltaics

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Nano-Micro Letters 2021年第11期13卷 266-279页

作者： Ze Qing Lin Hui Jun Lian Bing Ge Ziren Zhou Haiyang Yuan Yu Hou Shuang Yang Hua Gui Yang Key Laboratory for Ultrafine Materials of Ministry of Education Shanghai Engineering Research Center of Hierarchical NanomaterialsSchool of Materials Science and EngineeringEast China University of Science and TechnologyShanghai 200237People’s Republic of China

Passivation,as a classical surface treatment technique,has been widely accepted in start-of-the-art perovskite solar cells(PSCs)that can effectively modulate the electronic and chemical property of defective perovskite surface.The discovery of inorganic passivation compounds,such as oxysalts,has largely advanced the efficiency and lifetime of PSCs on account of its favorable electrical property and remarkable inherent stability,but a lack of deep understanding of how its local configuration affects the passivation effectiveness is a huge impediment for future interfacial molecular engineering.Here,we demonstrate the central-atom-dependent-passivation of oxysalt on perovskite surface,in which the central atoms of oxyacid anions dominate the interfacial oxygen-bridge strength.We revealed that the balance of local interactions between the central atoms of oxyacid anions(e.g.,N,C,S,P,Si)and the metal cations on perovskite surface(e.g.,Pb)generally determines the bond formation at oxysalt/perovskite interface,which can be understood by the bond order conservation principle.Silicate with less electronegative Si central atoms provides strong O-Pb motif and improved passivation effect,delivering a champion efficiency of 17.26%for CsPbI2Br solar cells.Our strategy is also universally effective in improving the device performance of several commonly used perovskite compositions.

关键词： Solar cell Lead halide perovskite Passivation Oxysalt Central atom

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Modulating MAPbI3 perovskite solar cells by amide molecules:Crystallographic regulation and surface passivation

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Journal of Energy Chemistry 2021年第5期30卷 179-185页

作者： Jin Xie Ziren Zhou Hongwei Qiao Mengjiong Chen Lijie Wang Shuang Yang Yu Hou Huagui Yang Key Laboratory for Ultrafine Materials of Ministry of Education Shanghai Engineering Research Center of Hierarchical NanomaterialsSchool of Materials Science and EngineeringEast China University of Science and TechnologyShanghai 200237China

A controllable crystallization is of practical importance to produce high-quality perovskite thin films with reduced structural defects.Lewis bases as electron-pair donor chemicals can strongly coordinate to lead ions and have been extensively employed to manipulate the growth of perovskite crystals.In this work,we demonstrate a series of Lewis-base amides,for morphological regulation of methylammonium lead triiodide(MAPbI3)thin films.The screened acetamide was demonstrated to decently improve the grain size,along with a spatial distribution at grain boundaries(GBs).The mesostructured solar cells of acetamide-modified absorbers yielded an optimized power conversion efficiency(PCE)of 20.04%with a mitigated open-circuit voltage(V_(OC))deficit of 0.39 V.This work provides a facile and cost-effective strategy toward controllable fabrication of high-performance MAPbI3 solar cells.

关键词： Amide Methylammonium lead triiodide Crystallization Solar cell

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Minimizing interfacial energy losses in inverted perovskite solar cells by a dipolar stereochemical 2D perovskite interface

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Journal of Energy Chemistry 2024年第3期90卷 496-503,I0011页

作者： Junjie Qian Jingjing He Qihang Zhang Chenyue Zhu Shilin Chen Zhanpeng Wei Xuesong Leng Ziren Zhou Benben Shen Yu Peng Qiang Niu Shuang Yang Yu Hou Key Laboratory for Ultrafine Materials of Ministry of Education Shanghai Engineering Research Center of Hierarchical NanomaterialsSchool of Materials Science and EngineeringEast China University of Science and TechnologyShanghai 200237China National Enterprise Technology Center Inner Mongolia Erdos Electric Power and Metallurgy Group Company LimitedOrdos 016064Inner MongoliaChina

Inverted perovskite solar cells(PSCs) have attracted broad research and industrial interest owing to their suppressed hysteresis,cost-effectiveness,and easy-fabrication.However,the issue of non-radiative recombination losses at the n-type interface between the perovskite and fullerene has impeded further improvement of photovoltaic performance.Here,we modify the n-type interface of FAPbI_(3) perovskite films by constructing a stereochemical two-dimensional(2D) perovskite interlayer,in which the organic cations comprise both pyridine and ammonium groups.The pyridine N donor can create stable bonding with the surface-uncoordinated Pb on the perovskite,thereby passivating the shallow-level defects and enhancing the air stability of the film.Furthermore,the pyridine N donor also offers a positive polar interface to decrease the surface work function of the perovskite film,enabling n-type modification.Ultimately,we employ a p-i-n photovoltaic(PV) device with the positive dipole interlayer at perovskite/fullerene contact and achieve remarkable photoelectric conversion efficiency(PCE) of 22.0%.

关键词： Perovskite solar cells Dipole interlayer Stereochemistry Non-radiative recombination

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DC-UbP/UBTD2,a scaffold protein involved in orchestrating ubiquitination pathway

DC-UbP/UBTD2,a scaffold protein involved in orchestrating ub...

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中国生物化学与分子生物学会第十届会员代表大会暨全国学术...

作者： Hui Yang Aixin Song Yuhang Zhang Ziren Zhou Hongyu Hu State Key Laboratory of Molecular Biology Institute of Biochemistry and Cell BiologyShanghai Institutes for Biological SciencesChinese Academy of Sciences

DC-UbP,also known as UBTD2,was first identified from dendritic cells.It is a ubiquitinlike(UbL) protein containing a UbL domain in the C-terminus.We have determined the solution NMR structures of the N-terminal ubiquitinbinding domain(UBD) and the Cterminal UbL domain of DC-UbP.By pull-down and mass spectrometric analysis, we identified that DC-UbP can interact with both ubiquitin activating enzyme(UbEI) and a ubiquitin specific protease (USP5).UbEI plays an important role in the first step of protein ubiquitination,whereas USP5(also named IsoT) is

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Recent Status of Taiji Program in China

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空间科学学报 2022年第4期42卷 536-538页

作者： LUO ziren ZHANG Min WU Yueliang Taiji Laboratory for Gravitational Universe University of Chinese Academy of SciencesBeijing 100049 Hangzhou Institute for Advanced Study University of Chinese Academy of SciencesHangzhou 310024 Institute of Mechanics Chinese Academy of SciencesBeijing 100190 International Center for Theoretical Physics Asia-Pacific UCASBeijing100190

The Taiji-1 satellite is a pilot satellite mission of Taiji program,which is used to verify Taiji’s key technology and also to testify the feasibility of Taiji roadmap.Taiji-1 was launched on 31 August 2019 and its designed mission was successfully completed.The in-orbit scientific achievements of Taiji-1 satellite in the first stage have been published and now it has entered the extended task phase.Taiji-2 will prepare all the technology needed by Taiji-3,and remove all the technical obstacles faced by Taiji-3.

关键词： Gravitational wave Taiji program Global gravity field model

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范德华层状材料Cu_(2x)Fe_(1-x)PS_(3)的二维介磁性

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Science China Materials 2024年第2期67卷 658-664页

作者：周浩东刘洋汪子人郭宇桥谢毅吴长征 Hefei National Research Center for Physical Sciences at the Microscale University of Science and Technology of ChinaHefei 230026China Key Laboratory of Precision and Intelligent Chemistry CAS Key Laboratory of Mechanical Behavior and Design of MaterialsUniversity of Science and Technology of ChinaHefei 230026China Institute of Energy Hefei Comprehensive National Science CenterHefei 230031China

复杂的磁有序,如介磁性和斯格明子,因其在自旋电子学中的潜在应用和对磁性的基本认知的意义而广受关注.然而,在本征范德华层状材料中很少观察到复杂的磁有序,这限制了二维磁性在该领域的探索.本文报道了一种新的化合物Cu_(2x)Fe_(1-x)PS... 详细信息

复杂的磁有序,如介磁性和斯格明子,因其在自旋电子学中的潜在应用和对磁性的基本认知的意义而广受关注.然而,在本征范德华层状材料中很少观察到复杂的磁有序,这限制了二维磁性在该领域的探索.本文报道了一种新的化合物Cu_(2x)Fe_(1-x)PS_(3),它是第一种具有场诱导铁磁性的介磁范德华层状材料.在该化合物中,单价Cu以二聚体的形式部分取代FePS3晶格中Fe的位置.Cu的取代破坏了FePS^(3)的二维伊辛反铁磁结构,导致弱铁磁性和反铁磁性共存.更重要的是,当外磁场垂直于材料的ab平面时,我们可以观察到场诱导的铁磁性.此材料的介磁相变本质归因于未补偿反铁磁结构在外磁场下转变为非共线磁结构.我们的工作为实现二维介磁有序化提供了一条道路.

关键词： van der Waals material doping meta-magnetic transition field-induced ferromagnetism

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18β-glycyrrhetinic acid exhibit protective effect against triptolide-induced hepatotoxicity:role in oxidative stress,inflammation and apoptosis

18β-glycyrrhetinic acid exhibit protective effect against t...

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第十一届全国免疫学学术大会

作者： Yang Guanghua Wang Lan Yu Xiuting Huang Yanfeng zhou Lian Su ziren Zhang Xiaojun Guangzhou Unversity of Chinese Medicine The First Affiliated Hospital of Chinese Medicine Guangzhou University of Chinese Medicine

Objective: Tripterygium wilfordii Hook F(TWHF) has been widely used in traditional Chinese medicine to treat rheumatoid arthritis, systemic lupus erythematosus and immune complex nephritis, and to prolong allograft survival in organtransplants. Triptolide(TP), the major active component of TWHF, possesses promising pharmacological effects such as immuno-suppression, anti-inflammation and anti-tumor activity. However, the toxicities of TP, particularly the hepatotoxicity, limit its clinical application. 18β-Glycyrrhetinic acid(GA) is the main bioactive ingredient of Licorice(Glycyrrhizza glabra L.), a herbal medicine well-known for its detoxification. The present study aims to investigate the protective effect of GA against TP-induced hepatotoxicity and its possible mechanism. Methods: 40 male Wistar rats were randomly divided into 4 groups. TP-intoxicated rats received 2.4 mg/kg of TP for 3 days p.o. Protection group pretreated with GA for 6 days p.o. ALT, AST and ALP were detected as biomarkers in the blood to indicate hepatic injury. MDA, SOD, CAT and GPx were evaluated for oxidative stress in liver injury. Liver tissue TNF-α, IL-1β, IL-6 and IFN-γ levels were measured for inflammation in hepatic injury. Light microscopy for histopathological studies and TUNEL assay was also done. Results: TP markedly elevated the serum levels of ALT, AST and ALP, and led to evident histopathological changes in liver. The hepatic activities of SOD, CAT, GSH-Px were significantly decreased in TP group, whereas, the levels of MDA, TNF-α, IL-6, IL-1β and IFN-γ were elevated in TP-injured liver. TUNEL assay showed that TP induced severe apoptosis in rat hepatocytes. In contrast, GA pretreatment significantly reversed the above biochemical and pathological changes caused by TP.Conclusions: Overall, the findings indicate that GA exhibits a protective effect against TP-induced hepatotoxicity in rats by enhancing anti-oxidation, suppressing the inflammatory response and protecting hepatocytes from apoptosis.

关键词： Triptolide 18β-Glycyrrhetinic acid hepatotoxicity anti-oxidation anti-inflammation anti-apoptos

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Exploring the nature of black hole and gravity with an imminent merging binary of supermassive black holes

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Science China(Physics,Mechanics & Astronomy) 2023年第3期66卷 76-87页

作者： Xingyu Zhong Wen-Biao Han ziren Luo Yueliang Wu Shanghai Astronomical Observatory Chinese Academy of SciencesShanghai 200030China Taiji Laboratory for Gravitational Wave Universe(Beijing/Hangzhou) University of Chinese Academy of SciencesBeijing 100049China Hangzhou Institute for Advanced Study University of Chinese Academy of SciencesHangzhou 310124China School of Astronomy and Space Science University of Chinese Academy of SciencesBeijing 100049China Institute of Mechanics Chinese Academy of SciencesBeijing 100190China Shanghai Frontiers Science Center for Gravitational Wave Detection Shanghai 200240China Institute of Theoretical Physics Chinese Academy of SciencesBeijing 100190China International Centre for Theoretical Physics Asia-Paciﬁc University of Chinese Academy of SciencesBeijing 100190China Key Laboratory of Gravitational Wave Precision Measurement of Zhejiang Province Hangzhou 310124China

A supermassive binary black-hole candidate SDSS J1430+2303 reported recently motivates us to investigate an imminent binary of supermassive black holes as potential gravitational wave source, and the radiated gravitational waves at the end of the merger are shown to be in the band of space-borne detectors. We provide a general analysis on the required detecting sensitivity needed for probing such type gravitational wave sources and make a full discussion by considering two typically designed configurations of space-borne antennas. If a source is so close, it is possible to be detected with Taiji pathfinder-plus which is proposed to be an extension for the planned Taiji pathfinder by just adding an additional satellite to the initial two satellites. The gravitational wave detection on such kind of source enables us to explore the properties of supermassive black holes and the nature of gravity.

关键词： gravitation wave SMBHBs Taiji pathfinder

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Advancing space-based gravitational wave astronomy: Rapid parameter estimation via normalizing flows

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Science China(Physics,Mechanics & Astronomy) 2024年第3期67卷 20-33页

作者： Minghui Du Bo Liang He Wang Peng Xu ziren Luo Yueliang Wu Center for Gravitational Wave Experiment National Microgravity LaboratoryInstitute of MechanicsChinese Academy of SciencesBeijing 100190China Key Laboratory of Gravitational Wave Precision Measurement of Zhejiang Province Hangzhou Institute for Advanced StudyUniversity of Chinese Academy of SciencesHangzhou 310024China Shanghai Institute of Optics and Fine Mechanics Chinese Academy of SciencesShanghai 201800China International Centre for Theoretical Physics Asia-Pacific University of Chinese Academy of SciencesBeijing 100049China Taiji Laboratory for Gravitational Wave Universe(Beijing/Hangzhou) University of Chinese Academy of SciencesBeijing 100049China Lanzhou Center of Theoretical Physics Lanzhou UniversityLanzhou 730000China Hangzhou Institute for Advanced Study University of Chinese Academy of SciencesHangzhou 310024China Institute of Theoretical Physics Chinese Academy of SciencesBeijing 100190China

Gravitational wave(GW) astronomy is witnessing a transformative shift from terrestrial to space-based detection, with missions like Taiji at the forefront. While the transition brings unprecedented opportunities for exploring massive black hole binaries(MBHBs), it also imposes complex challenges in data analysis, particularly in parameter estimation amidst confusion noise.Addressing this gap, we utilize scalable normalizing flow models to achieve rapid and accurate inference within the Taiji environment. Innovatively, our approach simplifies the data's complexity, employs a transformation mapping to overcome the year-period time-dependent response function, and unveils additional multimodality in the arrival time parameter. Our method estimates MBHBs several orders of magnitude faster than conventional techniques, maintaining high accuracy even in complex backgrounds. These findings significantly enhance the efficiency of GW data analysis, paving the way for rapid detection and alerting systems and enriching our ability to explore the universe through space-based GW observation.

关键词： Taiji program gravitational wave detection parameter estimation machine learning

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Taiji-1 Satellite Mission

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空间科学学报 2020年第5期40卷 691-692页

作者： LUO ziren ZHANG Min WU Yueliang Taiji Laboratory for Gravitational Universe University of Chinese Academy of ScienceBeijing 100049 Institute of Mechanics Chinese Academy of ScienceBeijing 100190 International Centre for Theoretical Physics Asia-Pacific University of Chinese Academy of ScienceBeijing 100190

China’s first satellite to conduct experiments on key technologies related to space-based gravitational wave detection,Taiji-1,has successfully completed its in-orbit tests,making a breakthrough in the country’s gravitational wave detection.With the success of Taiji-1’s in-orbit tests,the first goal of Chinese Academy of Science’s three-step strategy to implement the Taiji program has been successfully achieved.

关键词： Gravitational wave Taiji program Drag-free control system

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