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Recent progress in lanthanide ions doped inorganic metal halide perovskites

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Journal of Rare Earths 2024年第2期42卷 237-250,I0001页

作者： Yiyan Zhang Tianyu Zhao Guanying Chen MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage School of Chemistry and Chemical EngineeringState Key Laboratory of Urban Water Resource and EnvironmentKey Laboratory of Micro-systems and Micro-structuresMinistry of EducationHarbin Institute of TechnologyHarbin150001China

Benefiting from their large molar extinction coefficient,high carrier mobility,narrow and tunable emissions,inorganic metal halide perovskites(IMHPs) demonstrate great potential in various optoelectrical devices including solar cells,light emitting diodes and photodetectors in the past few years.Metal ions doping,well-known as a modification method of semiconductors,has been extensively applied in IMHPs as well.Diverse metal ions have been doped in IMHPs including alkali metals,alkali earth metals,transition metals and lanthanide metals,which either improve their optical performances or induce intriguing brand-new properties.Among them,lanthanide metals feature plentiful energy levels and stable optical properties and are one of the most noteworthy species.Here we review recent progress in lanthanide ions doped IMHPs.We summarize Yb,Eu or Er ions singly doping in detail,which was the most investigated species in IMHPs.Other lanthanide ions are also reviewed synoptically.Furthermore,we introduce lanthanide ions multi-doped IMHPs and at last we put forward several potential development directions.As the interests in lanthanide ions doped IMHPs rise,researchers have made some achievements in the field.Still though,there are more unexplored issues.Although there are review articles focusing on metal ions doped IMHPs or lanthanide ions doped perovskites,this review aims to provide an overall introduction of lanthanide ions doped IMHPs.This review may help researchers learn about lanthanide ions doped IMHPs and is to inspire researchers to make further promotion in this field.

关键词： Halide perovskite Lanthanide doping Rare earths

An experimental and theoretical study on photoluminescence of Ce^(3+)-doped ZnS quantum dots and their application in Aspergillus oryzae

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Journal of Rare Earths 2024年第6期42卷 1020-1028,I0001页

作者： Yan Lei Guangzhi Zhang Yitong Yao Gaiqin Zhu Zhong Chen Jiangrong Dan Hua Liu Shuwang Duo School of Materials and Mechanical and Electrical EngineeringJiangxi Science and Technology Normal University Nanchang330013China

ZnS and ZnS:3.125%Ce^(3+)(ZSC)quantum dots(QDs)were synthesized by a low-temperature solid-phase method.The crystal structure,photoluminescence(PL)properties of ZSC QDs,and their effects on the growth and kojic acid production of Aspergillus oryzae(A.oryzae)were investigated.It is found that both QDs have a cubic blend structure with the average particle size ranging of 2.75-6.14 nm.Ce^(3+)doping not only increases the band gap of ZnS QDs from 3.43 to 3.48 eV,but also increases the PL intensity by about 2.23 times,which is due to the fact that the electron carrier concentration is improved,and then the rate of radiative recombination is increased.The integral emission intensity,biomass,extracellular proteins yield,and kojic acid production of A.oryzae cultured with ZSC(ZnS)QDs are about 4.31(3.23),1.61(1.20),1.12(1.09),and 2.99(1.68)times higher than that of medium without QDs,respectively.

关键词： Zns Quantum dots doping First-principles calculations Aspergllus oryzae Rare earths

Engineering and understanding SnS_(0.5)Se_(0.5)@N/S/Se triple-doped carbon nanofibers for enhanced sodium-ion batteries

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Chinese Chemical Letters 2024年第4期35卷 226-230页

作者： Fanjun Kong Yixin Ge Shi Tao Zhengqiu Yuan Chen Lu Zhida Han Lianghao Yu Bin Qian School of Electronic and Information Engineering Changshu Institute of TechnologyChangshu 215500China Key Laboratory of Spin Electron and Nanomaterials of Anhui Higher Education Institutes Suzhou UniversitySuzhou 234000China Far East Holding Group Co. Ltd.Yixing 214200China

Tin-based chalcogenides have attracted tremendous attention as an anode material for sodium storage owing to their unique structure and high theoretical capacity. Unfortunately, the large volume change and poor conductivity lead to sluggish reaction kinetics and poor cycling performance. Herein, SnS_(0.5)Se_(0.5)nanoparticles coupled with N/S/Se triple-doped carbon nanofibers(SnS_(0.5)Se_(0.5)@NSSe-C) are designed and synthesized through electrospinning and annealing process. Benefiting from the synergistic effects of SnS_(0.5)Se_(0.5)and NSSe-C, the SnS_(0.5)Se_(0.5)@NSSe-C nanofibers exhibit a high reversible capacity and ultralong cycle life at higher current density for sodium-ion batteries. Furthermore, the sodium storage mechanism and electrochemical reaction kinetics of the SnS_(0.5)Se_(0.5)@NSSe-C composite are characterized by the in-situ measurements. The theoretical calculations further reveal the structural advantages of SnS_(0.5)Se_(0.5)@NSSeC composite, which exhibits a high adsorption energy of Na+. This work can provide a novel idea for the synthesis of ternary tin-based chalcogenides and is beneficial for the investigation of their reaction kinetics.

关键词： SnS_(0.5)Se_(0.5) Carbon nanofibers doping Density functional theory Sodium ion batteries

Enhanced conductivity and weakened magnetism in Pb-doped Sr_(2)IrO_(4)

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Chinese Physics B 2024年第1期33卷 680-685页

作者：岳智来甄伟立牛瑞焦珂珂朱文卡皮雳张昌锦 High Magnetic Field Laboratory Hefei Institutes of Physical ScienceChinese Academy of SciencesHefei 230031China Science Island Branch of Graduate School University of Science and Technology of ChinaHefei 230026China Collaborative Innovation Center of Advanced Microstructures Nanjing UniversityNanjing 210093China

Group IV element Pb has been selected as the dopant to dope at the Sr site of Sr_(2)IrO_(4). It is exciting to find that the single-phase crystal structure could be maintained with a high Pb doping level of up to x=0.3 in Sr_(2-x)Pb_(x)IrO_(4). The mapping data obtained from energy-dispersive x-ray spectroscopy analyses give solid evidence that the Pb ions are uniformly distributed in the Sr_(2)IrO_(4) matrix. The incorporation of Pb leads to a moderate depression of the canted antiferromagnetic ordering state. The electrical conductivity could be greatly enhanced when the Pb doping content is higher than x=0.2.The present results give a fresh material base to explore new physics in doped Sr_(2)IrO_(4) systems.

关键词： iridates doping conductivity magnetism

Increased Oxygen Vacancies in CuO-ZnO Snowflake-like Composites Drive the Hydrogenation of CO_(2) to Methanol

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China Petroleum Processing & Petrochemical Technology 2024年第2期26卷 22-33页

作者： San Xiaoguang Wu Wanmeng Zhang Lei Meng Dan Chang Xiangshuang Tan Jianen Qi Jian College of Chemical Engineering Shenyang University of Chemical TechnologyShenyang 110142China Shenyang Xinghua Aviation Electrical Appliances Co. Ltd.Shenyang 110023China Department of Prosthodontics PLA 964 HospitalChangchun 130000China State Key Laboratory of Biochemical Engineering Institute of Process EngineeringChinese Academy of SciencesBeijing 100190China

Cu/ZnO is widely used in the hydrogenation of carbon dioxide (CO_(2)) to methanol (CH_(3)OH) to improve the lowconversion rate and selectivity generally observed. In this work, a series of In, Zr, Co, and Ni-doped CuO-ZnO catalysts wassynthesized via a hydrothermal method. By introducing a second metal element, the activity and dispersion of the activesites can be adjusted and the synergy between the metal and the carrier can be enhanced, forming an abundance of oxygenvacancies. Oxygen vacancies not only adsorb CO_(2) but also activate the intermediates in methanol synthesis, playing a keyrole in the entire reaction. Co3O4-CuO-ZnO had the best catalytic performance (a CO_(2) conversion rate of 9.17%;a CH_(3)OHselectivity of 92.77%). This study describes a typical strategy for multi-component doping to construct a catalyst with anabundance of oxygen vacancies, allowing more effective catalysis to synthesize CH_(3)OH from CO_(2).

关键词： CuO-ZnO catalyst CO_(2)hydrogenation to CH_(3)OH doping oxygen vacancy synergy

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

doping induced morphology,crystal structure,and upconversion luminescence evolution:from Na_(3)ScF_(6):Yb/Er/Y to NaYF_(4):Yb/Er/Sc nanocrystals

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Rare Metals 2023年第3期42卷 1018-1027页

作者： Miao-Miao Liu Guang-Chao Zheng Yang Wei Dan Tian Qing-Bo Zheng Ling Huang Juan Xie School of Physics and Microelectronics Zhengzhou UniversityZhengzhou 450001China Key Laboratory of Flexible Electronics(KLOFE)and Institute of Advanced Materials(IAM) Jiangsu National Synergetic Innovation Center for Advanced Materials(SICAM)Nanjing Tech University(NanjingTech)Nanjing 211816China College of Materials Science and Engineering Nanjing Forestry UniversityNanjing 210037China

Impurity doping not only provides a fundamental approach to impart unique electronic,magnetic and optical properties to target nanomaterials,but also has critical influence on nucleation and growth of many functional nanocrystals.In the current study,Y^(3+)and Sc^(3+)were adopted to tune the shape,size,and upconversion luminescence properties of Na_(3)ScF_(6):Yb/Er and NaYF_(4):Yb/Er samples,respectively.When Y^(3+)doping concentration was lower than 10 mol%,the size and shape of Na_(3)ScF_(6):Yb/Er(18/2)nanoparticles gradually changed from~18 nm rhombus to 36 nm spheres.Subsequently,the coexistence of Na_(3)ScF_(6):Yb/Er and NaYF_(4):Yb/Er nanoparticles was observed during 20 mol%-50 mol%Y^(3+)doping,and finally NaYF_(4):Yb/Er nanoparticles became the only product at>60 mol%Y^(3+)doping where the role of Sc^(3+)turned into dopant and the size of nanocrystals decreased from~30 to 20 nm gradually.Both Y^(3+)and Sc^(3+)ions doping could enhance the upconversion luminescence intensity of Na_(3)ScF_(6):Yb/Er and NaYF_(4):Yb/Er samples,for which possible mechanism was proposed from the perspective of crystal structure.Finally,the upconversion luminescence details were disclosed.

关键词： doping Crystal growth Controlled synthesis Upconversion

"Clean"doping to advance 2D material phototransistors

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Light(Science & Applications) 2022年第7期11卷 1322-1323页

作者： Zhen Wang Peng Wang Weida Hu State Key Laboratory of Infrared Physics Shanghai Institute of Technical PhysicsChinese Academy of Sciences200083ShanghaiChina

doping is an essential element to develop next-generation electronic and optoelectronic devices and has to break the limit of specific steps during material synthesis and device fabrication.Here the authors reveal“clean”doping to enhance the electric and photoelectric performance of two-dimensional(2D)indium selenide(InSe)via a neutron-transmutation method for the first time,even after device fabrication.

关键词： optoelectronic doping Clean

doping transition metal in PdSeO_(3)atomic layers by aqueous cation exchange:A new doping protocol for a new 2D photocatalyst

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Chinese Chemical Letters 2022年第8期33卷 3739-3744页

作者： Xiuming Zhang Rongrong Pan Tailei Hou Shuping Zhang Xiaodong Wan Yuemei Li Shan Liu Jia Liu Jiatao Zhang Beijing Key Laboratory of Construction-Tailorable Advanced Functional Materials and Green Applications Experimental Center of Advanced MaterialsSchool of Materials Science&EngineeringBeijing Institute of TechnologyBeijing 100081China

Elemental doping confined in atomically-thin 2 D semiconductors offers a compelling strategy for constructing high performance photocatalysts.Although impressive progress has been achieved based on co-thermolysis method,the choices of dopants as well as semiconductor hosts are still quite limited to yield the elaborate photocatalyst with atomic-layer-confined doping defects,owing to the difficulty in balancing the reaction kinetics of different precursors.This study shows that the cation exchange reaction,which is dictated by the Pearson's hard and soft acids and bases(HSAB)theory and allowed to proceed at mild temperatures,can be developed into a conceptually new protocol for engineering elemental doping confined in semiconductor atomic layers.To this aim,the two atomic layers of a new type of 2 D photocatalyst PdSe0_(3)(PdSe0_(3)2 ALs,1.1 nm)are created by liquid exfoliation and exploited as a proof-of-concept prototype.It is demonstrated that the Mn(Ⅱ)dopants with controlled concentrations can be incorporated into PdSeO_(3)2 ALs via topological Mn^(2+) for-Pd^(2+) cation exchange performed in water/isopropanol solution at 30℃.The resulting Mn-doped PdSeO_(3)2 ALs present enhanced capacity for driving photocatalytic oxidation reactions in comparison with their undoped counterparts.The findings here suggest that the new route mediated by post synthetic cation exchange promises to give access to manifold 2 D confined-doping photocatalysts,with little perturbations on the thickness,morphology,and crystal structure of the atomically-thin semiconductor hosts.

关键词： 2D Semiconductor Atomic layers Photocatalysis doping Cation exchange