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Multifunctional dual-anion compensation of amphoteric glycine hydrochloride enabled highly stable perovskite solar cells with prolonged carrier lifetime

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Nano Research 2024年第6期17卷 5131-5137页

作者： Lina Qin Mengfei zhu Yuren Xia Xingkai Ma Daocheng hong Yuxi Tian Zuoxiu Tie Zhong Jin State Key Laboratory of Coordination Chemistry MOE Key Laboratory of Mesoscopic ChemistryMOE Key Laboratory of High Performance Polymer Materials and TechnologyJiangsu Key Laboratory of Advanced Organic MaterialsSchool of Chemistry and Chemical EngineeringNanjing UniversityNanjing 210023China Nanjing Tieming Energy Technology Co.Ltd. Nanjing 210093China Suzhou Tierui New Energy Technology Co.Ltd. Suzhou 215228China

Throughout years,the two-step spin-coating process is the most common method to prepare organic lead halide perovskite ***,the short reaction time of dropping the solution at the second step means that PbI2 cannot be completely transformed into perovskite *** solve this problem,we report the introduction of glycine hydrochloride(GlyHCl)into the second step of the two-step spin-coating process to prepare a FA_(0.9)MA_(0.1)PbI_(3-x)%-GlyHCl perovskite material(namely FAMA-x%-GlyHCl,where FA=formamidinium,MA=methylammonium,and x%stands for the molar ratio of GlyHCl added in FA iodide/MA iodide(FAI/MAI)precursor solution).The Cl−ion in GlyHCl assists the formation ofα-phase perovskite,and the-COO−group coordinates with Pb2+cation in a bridging way,making up for the anion vacancy in perovskite lattice and resulting in high absorption *** perovskite solar cells(PSCs)based on FAMA-9%-GlyHCl achieve a long carrier lifetime(527.0 ns),a photoelectric conversion efficiency(PCE)of 19.40%and good thermal stability,maintaining 85.8%of the initial PCE after being continuously heated at 60℃for 500 *** study helps to solve the problem of incomplete reaction in the two-step spin-coating process and puts forward a new solution for preparing high coverage perovskite films with large grain size.

关键词： dual-anion compensation glycine hydrochloride perovskite solar cells carrier lifetime thermal and moisture stability

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High photoluminescence Ag-In-Ga-S quantum dots based on ZnX_(2)-treated surface passivation

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Nano Research 2024年第8期17卷 7533-7541页

作者： Danni Yan Yuhui Dong Naiwei Wei Shuai Yang hong zhu Wanzhong Gu Yousheng Zou Haibo Zeng MIIT Key Laboratory of Advanced Display Materials and Devices Institute of Optoelectronics&NanomaterialsSchool of Materials Science and EngineeringNanjing University of Science and TechnologyNanjing 210094China

Quaternary Ag-In-Ga-S(AIGS)quantum dot(QD)is considered a promising,spectral-tunable,and environmentally friendly luminescent display ***,the more complex surface defect states of AIGS QDs resulting from the coexistence of multiple elements lead to a low(<60%)photoluminescence quantum yield(PLQY).Here,we develop a novel convenient method to introduce Z-type ligands ZnX_(2)(X=Cl,Br,I)for passivating the surface defects of AIGS QDs to dramatically enhance the PLQY and stability without affecting the crystalline structure and *** show that the addition of ZnCl_(2) during the purified process of AIGS QDs leads to a 3-fold increase of PLQY(from 28.5% to 87%).Impressively,the highest PLQY is up to a recorded value of 92%,which is comparable to typical heavy metal *** dynamics studies have shown that the rapid annihilation process of excitons in treated QDs is *** also confirm that the improvement in PLQY is a result of the effective passivation of the non-coordinating atom on the QD surface by building a new bonding between sulfur dangling and Zn2+.The realization of high PLQY will further promote the application of AIGS QDs in luminescent displays.

关键词： I-III-VI quantum dots Ag-In-Ga-S surface defect passivation Z-type ligand photoluminescence quantum yield

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Characterization and degradation of β-Sn particles in thermal aged Pb-rich solder joint for low-temperature co-fired ceramic(LTCC) applications

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Rare Metals 2024年第10期43卷 5346-5361页

作者： Jin-hong Liu Zhe zhu Qiang-Qiang Nie Jun-Fu Liu Peng He Shu-Ye Zhang State Key Laboratory of Advanced Welding and Joining Harbin Institute of Technology Anhui Key Laboratory of Microsystem East China Research Institute of Microelectronics School of Materials Science and Engineering Hefei University of Technology

High-lead solder joints are still playing an indispensable role in military and space ***, in-depth characterization of high-lead solder joints and the underlying degradation mechanisms remain unexplored. This research first performed aging tests on Sn10Pb90 solder joints, the shear strength at room and elevated temperatures gradually reduced, and the resistance increased. Here, a two-layered Ni–Sn intermetallic compound(IMC) structure was identified using transmission electron microscopy(TEM), which could be attributed to the change of Sn content in the solder. Moreover, the internal annealing twin of a Sn particle was discovered,which could be attributed to creeping induced by thermal expansion coefficient(CTE) difference between Sn and *** analysis of partial and whole annealing twins was conducted through high-resolution TEM(HRTEM).Finally, four degradation mechanisms were *** of the IMC layer would result in increased brittleness and resistivity. For particle coarsening, apart from diminishing the ductility and toughness of the solder joint, it would also accelerate the creeping rate by weakening the phase boundary strength. Regarding voids and cracks induced by phase boundary sliding, wedgeshaped cracking and pore-shaped cracking were discovered and their formation was analyzed. Most importantly, the consumption of Sn resulted in a depletion of wettable layer,leading to the formation of Pb streams and isolated IMC islands, also known as the spalling and delamination of IMCs. Pb diffusion followed a spiral path, which was mutually influenced by orientation misfit and concentration gradient. A technique to prevent cracking was *** research is expected to provide significant technical references for high-lead solder joints.

关键词： Aging Degradation mechanisms High-lead solder joints Properties TEM characterization

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Phytogenic feed additives as natural antibiotic alternatives in animal health and production: A review of the literature of the last decade

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Animal Nutrition 2024年第2期17卷 244-264页

作者： jing Wang Lufang Deng Meixia Chen Yuyan Che Lu Li Longlong zhu Guoshun Chen Tao Feng Institute of Animal Husbandry and Veterinary Medicine Beijing Academy of Agriculture and Forestry Sciences Sino-US Joint Laboratory of Animal Science Beijing Academy of Agriculture and Forestry Sciences Feed Branch of Beijing Sanyuan Breeding Technology Co. Ltd. College of Animal Science and Technology Gansu Agricultural University College of Life Science and Food Engineering Hebei University of Engineering College of Animal Science and Technology Henan University of Science and Technology

The use of antibiotics in animal production raises great public safety concerns; therefore, there is an urgent need for the development of substitutes for antibiotics. In recent decades, plant-derived feed additives have been widely investigated as antibiotic alternatives for use in animal health and production because they exert multiple biological functions and are less likely to induce resistance *** review summarizes the research history and classification of phytogenic feed additives and their main functions, potential modes of action, influencing factors, and potential negative effects. Further, we highlight the challenges in developing sustainable, safe, and affordable plant-derived antibiotic alternatives for use in livestock production.

关键词： Phytogenic feed additives Antibiotic alternatives Livestock animals Health Production

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Illuminating dark sirens with CSST

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Science China(Physics,Mechanics & Astronomy) 2024年第3期67卷 165-165页

作者： Zong-hong zhu School of Physics and Technology Wuhan UniversityWuhan 430072China Department of Astronomy Beijing Normal UniversityBeijing 100875China

In recent years, the Hubble tension has emerged as one of the most perplexing enigmas within the realm of cosmology[1]. This incongruity suggests the tantalizing prospect of new physics beyond the standard ΛCDM model, leading to the proposal of diverse extended cosmological models. At the same time, there is a pressing demand for novel cosmological tools to mediate the Hubble tension. The gravitational-wave(GW) standard siren has been put forth as a promising cosmological probe for resolving the Hubble tension, provided that the redshift of the GW source is known, as exemplified in ref. [2].

关键词： gravitational source beyond

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Intelligent design and construction of novel APN-based theranostic probe driven by advanced computational methods

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Chinese Chemical Letters 2024年第2期35卷 352-357页

作者： Yingli zhu Jie Qian Kunqian Yu jing Hou Yeshuo Ma Fei Chen Jie Dong Wenbin Zeng Xiangya School of Pharmaceutical Sciences Central South UniversityChangsha 410083China National Engineering Research Center of Rice and Byproduct Deep Processing School of Food Science and EngineeringCentral South University of Forestry and TechnologyChangsha 410004China State Key Laboratory of Drug Research Drug Discovery and Design CenterShanghai Institute of Materia MedicaChinese Academy of SciencesShanghai 201203China Department of Geriatrics Third Xiangya HospitalCentral South UniversityChangsha 410013China

Multifunctional molecules with both optical signal and pharmacological activity play an important role in drug development,disease diagnosis,and basic theoretical *** N(APN),as a representative tumor biomarker with anti-tumor potential,still lacks a high-precision theranostic probe specifically targeting *** this study,a novel quaternity design strategy for APN theranostic probe was *** proposed strategy utilizes advanced machine learning and molecular dynamics simulations,and cleverly employs the strategy of conformation-induced fluorescence recovery to achieve multi-objective optimization and integration of functional *** this strategy,a unique“Off-On”theranostic probe,ABTP-DPTB,was ingeniously constructed to light up APN through fluorescence restoration,relying on conformation-induced effects and solvent *** from the common diagnostic probes,the intelligent design with non-substrated linkage makes ABTP-DPTB for long-term in-situ *** fabricated probe was used for detecting and inhibiting APN in various environments,with a better in vitro inhibitory than golden-standard drug bestatin.

关键词： Theranostic probe Artificial intelligence Conformational restriction Fluorescence restoration Design strategy

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Building a High-Performance Graph Storage on Top of Tree-Structured Key-Value Stores

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Big Data Mining and Analytics 2024年第1期7卷 156-170页

作者： Heng Lin Zhiyong Wang Shipeng Qi Xiaowei zhu Chuntao hong Wenguang Chen Yingwei Luo School of Computer Science Peking UniversityBeijing 100871China Ant Group Beijing 100020China Department of Computer Science and Technology Tsinghua UniversityBeijing 100084China

Graph databases have gained widespread adoption in various industries and have been utilized in a range of applications,including financial risk assessment,commodity recommendation,and data lineage *** the principles and design of these databases have been the subject of some investigation,there remains a lack of comprehensive examination of aspects such as storage layout,query language,and *** present study focuses on the design and implementation of graph storage layout,with a particular emphasis on tree-structured key-value *** also examine different design choices in the graph storage layer and present our findings through the development of TuGraph,a highly efficient single-machine graph database that significantly outperforms well-known Graph DataBase Management System(GDBMS).Additionally,TuGraph demonstrates superior performance in the Linked Data Benchmark Council(LDBC)Social Network Benchmark(SNB)interactive benchmark.

关键词： graph database high-performance graph storage

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Putrescine Modulates Cadmium Fixation Ability of Cell Wall to Decrease Cadmium Accumulation in Rice,a Process Might Depend on Nitric Oxide

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Rice science 2024年第3期31卷 237-240,I0002-I0007页

作者： WANG Haoyu LI Su YANG Jibo HUANG jing zhu Xiaofang SHEN Renfang ZENG Dali College of Advanced Agricultural Sciences Zhejiang A&F UniversityHangzhou 311300China State Key Laboratory of Soil and Sustainable Agriculture Institute of Soil ScienceChinese Academy of ScienceNanjing 210008China University of Chinese Academy of Sciences Beijing 100049China

Although putrescine(PUT)has been linked to plants'responses to cadmium(Cd)stress,the exact mechanism is still *** the current investigation,the endogenous PUT concentration in rice roots was enhanced by Cd *** PUT increased root cell wall hemicellulose levels,which in turn increased its Cd binding capacity,concurrently decreasing the transcription level of genes such as OsNRAMP1 and OsCd1 that are responsible for root Cd *** a result。

关键词： absorption roots cadmium

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Cell Wall Fixation,Translocation,and Vacuolar Detoxification of Cadmium Contribute to Differential Grain Cadmium Accumulation in Two Rice Cultivars

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Rice science 2024年第3期31卷 241-244,I0008-I0010页

作者： zhu Xiaofang ZHAO Ling HUANG jing HE Jiatong SONG Jiayin TENG Ying SHEN Renfang State Key Laboratory of Soil and Sustainable Agriculture Institute of Soil ScienceChinese Academy of ScienceNanjing 210008China State Key Laboratory of Subtropical Silviculture Zhejiang A&F UniversityHangzhou 311300China

Cadmium(Cd)toxicity in rice is a major concern for human health and the environment,as it can accumulate in rice grains when grown in Cd-contaminated *** mitigate the risk of Cd toxicity,it is crucial to cultivate rice varieties with low grain Cd *** the summers of 2021 and 2022,we conducted Cd analysis on two rice cultivars,Tianyouhuazhan(TYHZ)and Xiushui 14,grown in fields with varying Cd pollution *** cultivars were also subjected to hydroponic treatment with or without 1μmol/L Cd for 7 d to assess Cd accumulation,nitric oxide(NO)production。

关键词： cultivar soils pollution

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Direct assimilation of simulated radar reflectivity for typhoon In-fa using EnKF:Issue with state variables updating

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Tropical Cyclone Research and Review 2024年第1期13卷 24-32页

作者： Ziyue Wang jingyao Luo hong Li Yijie zhu State Key Laboratory of Severe Weather Key Laboratory of Atmospheric Chemistry of CMAChinese Academy of Meteorological SciencesBeijingChina Shanghai Typhoon Institute China Meteorological AdministrationShanghai 200030China Key Laboratory of Numerical Modeling for Tropical Cyclones China Meteorological AdministrationShanghai 200030China

Using a convective scale WRF-GSI system and a reﬂectivity observation operator based on the double-moment microphysics(Thompson)scheme,simulated radar reﬂectivity data are produced and then directly assimilated with EnKF through Observing System Simulation Experi-ments(OSSEs)for the case of typhoon In-Fa(2021).We examined the ability of the EnKF to simultaneously estimate state variables and conducted sensitivity tests to evaluate the impact of updating different state *** results show that updating a full set of analysis variables can help obtain highly precise initialﬁelds in the model and improve typhoon forecast *** the horizontal wind update will affect the adjustment of the temperatureﬁeld and the sea level pressureﬁeld during the cyclic assimilation *** the variables directly related to the reﬂectivity operator alone could adjust hydrometers well,but the positive impact arising from the assimilation quickly vanishes during the *** addition,this study also includes a quantitative RMSE analysis for each variable during the assimilation cycle and compares the effect of each schemes on different variables.

关键词： Radar reﬂectivity data EnKF Direct assimilation State variables

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