检索结果-南通市图书馆

Efficient Semi‑Transparent Wide‑Bandgap Perovskite Solar Cells Enabled by Pure‑Chloride 2D‑Perovskite Passivation

同方期刊数据库博看期刊评论

在线全文

学校读者我要写书评

暂无评论

Nano-Micro Letters 2023年第8期15卷 35-48页

作者： Liu Yang Yongbin Jin Zheng Fang Jinyan Zhang Ziang Nan Lingfang Zheng Huihu Zhuang Qinghua Zeng kaikai Liu Bingru Deng Huiping Feng Yujie Luo Chengbo Tian Changcai Cui Liqiang Xie Xipeng xu Zhanhua Wei Xiamen Key Laboratory of Optoelectronic Materials and Advanced Manufacturing Institute of Luminescent Materials and Information DisplaysCollege of Materials Science and EngineeringHuaqiao UniversityXiamen 361021People’s Republic of China MOE Engineering Research Center for Brittle Materials Machining Institute of Manufacturing EngineeringCollege of Mechanical Engineering and AutomationHuaqiao UniversityXiamen 361021People’s Republic of China Gold Stone(Fujian)Energy Company Limited Quanzhou 362005People’s Republic of China Collaborative Innovation Center of Chemistry for Energy Materials Department of ChemistryCollege of Chemistry and Chemical EngineeringXiamen UniversityXiamen 361005People’s Republic of China

Wide-bandgap(WBG)perovskite solar cells suffer from severe non-radiative recombination and exhibit relatively large opencircuit voltage(V_(OC))deficits,limiting their photovoltaic ***,we address these issues by in-situ forming a well-defined 2D perovskite(PMA)_(2)PbCl_(4)(phenmethylammonium is referred to as PMA)passivation layer on top of the WBG active *** 2D layer with highly pure dimensionality and halide components is realized by intentionally tailoring the side-chain substituent at the aryl ring of the post-treatment ***-principle calculation and single-crystal X-ray diffraction results reveal that weak intermolecular interactions between bulky PMA cations and relatively low cation-halide hydrogen bonding strength are crucial in forming the well-defined 2D ***(PMA)_(2)PbCl_(4)forms improved type-I energy level alignment with the WBG perovskite,reducing the electron recombination at the perovskite/hole-transport-layer *** this strategy in fabricating semi-transparent WBG perovskite solar cells(indium tin oxide as the back electrode),the V_(OC)deficits can be reduced to 0.49 V,comparable with the reported state-of-the-art WBG perovskite solar cells using metal ***,we obtain hysteresis-free 18.60%-efficient WBG perovskite solar cells with a high V_(OC)of 1.23 V.

关键词： Wide-bandgap perovskite solar cells Transparent back electrodes Defect passivation Bulky cations

Sputtering under Mild Heating Enables High-Quality ITO for Efficient Semi-Transparent Perovskite Solar Cells

在线全文

学校读者我要写书评

暂无评论

Journal of Renewable Materials 2022年第10期10卷 2509-2518页

作者： Yongbin Jin Zheng Fang Liu Yang kaikai Liu Mingliang Li Yaping Zhao Yujie Luo Huiping Feng Bingru Deng Chengbo Tian Changcai Cui Liqiang Xie Xipeng xu Zhanhua Wei Xiamen Key Laboratory of Optoelectronic Materials and Advanced Manufacturing Institute of Luminescent Materials and Information DisplaysCollege of Materials Science and EngineeringHuaqiao UniversityXiamen361021China MOE Engineering Research Center for Brittle Materials Machining Huaqiao UniversityXiamen361021China

Semi-transparent perovskite solar cells(ST-PSCs)are promising in building-integrated photovoltaics(BIPVs)and tandem solar cells(TSCs).One of the keys to fabricate high-performance ST-PSCs is depositing efficient transparent *** tin oxide(ITO)is an excellent transparent conductive oxide with good light transmittance and high ***,the high sheet resistance of ITO sputtered at room temperature leads to the low fill factor(FF)and poor power conversion efficiency(PCE)of the ***,we study the effect of the sputtering temperature on the properties of ITO and the performance of *** find that when the sputtering temperature increases from the room temperature to 70℃,the crystallinity of the sputtered ITO gradually ***,the sheet resistance decreases and the corresponding device performance ***,once the sputtering temperature further increases over 70℃,the underlying hole transport layer will be damaged,leading to poor device ***,the optimized mild heating temperature of 70℃is applied and we obtain ST-PSCs with a champion PCE of 15.21%.We believe this mild heating assisted sputtering method is applicable in fabricating BIPVs and TSCs.

关键词： Indium tin oxide sputtering temperatures semi-transparent perovskite solar cells

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

硅基片上光互连电路设计

光电子 2016年第2期6卷 47-53页

作者：唐雄范仁森马正飞徐开凯(指导) 于奇电子科技大学微电子与固体电子学院四川成都

根据摩尔定律,芯片的集成度不断提高,传统的片上互连技术由于受到电互连物理特性的限制,其传输延迟、带宽密度和功耗等关键性能指标很难有质地提升,成为制约片上互连性能进一步提升的瓶颈。相比之下,光互连信号传输具有损耗低、速度快... 详细信息

根据摩尔定律,芯片的集成度不断提高,传统的片上互连技术由于受到电互连物理特性的限制,其传输延迟、带宽密度和功耗等关键性能指标很难有质地提升,成为制约片上互连性能进一步提升的瓶颈。相比之下,光互连信号传输具有损耗低、速度快、延迟低、带宽密度高的优势。因此,光互连技术在片上系统的应用中具有潜在优势。文章采用MOS管发光器件实现硅基光互连系统单片集成。由于硅光源在光互连中扮演着重要角色,所以本文对硅基发光做了重点研究,并对过去几年硅光源研究成果进行回顾。基于前人的研究成果,我们设计了MOS管发光器件,并对该器件的电学特性和光学特性进行了仿真和分析,基于这些结果,然后对硅基片上光互连进行初步的设计,有望在未来光互连中发挥重要作用。

关键词： MOS管光发射器件硅基发光器件硅基光互连电路

桂枝加龙骨牡蛎汤对魄不安于肺不寐大鼠脑组织Caspase-3、Bcl-2、Bax水平的影响

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

中医药学报 2024年第2期52卷 18-23页

作者：王慧张星平刘俊昌梁政亭闫德祺陈旭贾宏林王凯凯吴金鸿新疆医科大学第四临床医学院新疆乌鲁木齐830099 新疆医科大学附属中医医院新疆乌鲁木齐830099

目的:探讨桂枝加龙骨牡蛎汤对魄不安于肺不寐大鼠脑组织Caspase-3、Bcl-2、Bax表达的影响及其治疗魄不安于肺不寐可能的作用机制。方法:32只雄性SD大鼠随机分为对照组、模型组、中药组和西药组,每组8只。采用水环境小平台法干预9 d建立... 详细信息

目的:探讨桂枝加龙骨牡蛎汤对魄不安于肺不寐大鼠脑组织Caspase-3、Bcl-2、Bax表达的影响及其治疗魄不安于肺不寐可能的作用机制。方法:32只雄性SD大鼠随机分为对照组、模型组、中药组和西药组,每组8只。采用水环境小平台法干预9 d建立魄不安于肺不寐大鼠模型,造模成功后,中药组予以桂枝加龙骨牡蛎汤7.6 g·kg-1·d-1灌胃,西药组予以右佐匹克隆片0.1 mg·kg-1·d-1灌胃,对照组和模型组给予等体积生理盐水灌胃,连续14 d,测量体质量。采用免疫组织化学法及蛋白质免疫印迹法检测脑组织中Caspase-3、Bcl-2、Bax表达水平。结果:与对照组比较,模型组大鼠体质量减轻(P<0.01),免疫组化检测结果显示,大鼠脑组织Bcl-2的表达显著减少(P<0.01),Caspase-3、Bax表达显著增加(P<0.01),Bcl-2/Bax比率显著减少(P<0.01);Western blot结果显示大鼠脑组织Bcl-2相对表达量显著减少(P<0.01),Bax、Caspase-3相对表达量显著增加(P<0.01)。与模型组比较,中药组及西药组大鼠体质量显著增加(P<0.01),免疫组化检测结果显示,大鼠脑组织Bcl-2表达增加(P<0.05),Caspase-3、Bax表达减少(P<0.05),Bcl-2/Bax比率显著升高(P<0.01);Western blot结果显示大鼠脑组织中Bcl-2相对表达量增加(P<0.05),Bax、Caspase-3相对表达量显著减少(P<0.01)。结论:桂枝加龙骨牡蛎汤改善魄不安于肺不寐大鼠的睡眠可能与增加其脑组织Bcl-2、降低Caspase-3、Bax表达水平有关。

关键词：失眠魄不安于肺 Caspase-3 Bcl-2 Bax 桂枝加龙骨牡蛎汤

SNORA73B高表达对喉鳞癌干细胞样特征的影响

在线全文

学校读者我要写书评

暂无评论

现代肿瘤医学 2024年第10期32卷 1799-1804页

作者：王晶田赵岩吴干勋刘胜辉兰利利胡国斌徐玉茹郝凯凯沈素朋河北医科大学第四医院耳鼻喉头颈外科河北石家庄050011 河北医科大学第四医院、河北省肿瘤研究所生物标本库河北石家庄050011

目的:以小核仁RNA73B(small nucleolar RNA 73B,SNORA73B)在喉鳞癌(laryngeal squamous cell carcinoma, LSCC)中高表达及其临床意义为切入点,探讨SNORA73B可能通过维持干细胞特征,从而促进LSCC细胞的增殖、迁移和侵袭。方法:qPCR检测LSCC组织和细胞中SNORA73B的表达情况;体外培养细胞,MTS、划痕愈合、Transwell实验分别检测SNORA73B敲低或过表达对细胞增殖、迁移和侵袭的影响;肿瘤细胞球形成实验,检测SNORA73B对LSCC细胞干性样特征的影响。结果:qPCR检测结果显示,SNORA73B在LSCC组织和细胞中表达显著高于相应癌旁组织和细胞对照组(均P<0.05),且与患者病理分级、淋巴结转移和不良预后有关(P<0.05)。过表达SNORA73B的Tu177细胞增殖、划痕愈合、迁移和侵袭能力明显增强(均P<0.05);而干扰SNORA73B后细胞增殖、划痕愈合、迁移和侵袭能力明显降低(均P<0.05)。在诱导LSCC干细胞样特性的喉癌球细胞形成后,肿瘤干细胞标志物OCT4、SOX2蛋白表达明显升高(P<0.05),SNORA73B表达显著升高(P<0.05);干扰SNORA73B,细胞球形成数明显减少(P<0.05),OCT4和SOX2 mRNA(P<0.05)和蛋白表达明显降低。结论:SNORA73B高表达可能与LSCC的发生和恶性进展有关,可能介导LSCC细胞的干性样特征促进肿瘤细胞的增殖和迁移。

关键词：小核仁RNA SNORA73B 喉鳞状细胞癌预后肿瘤干细胞

Chemical Strain of Graphite-Based Anode during Lithiation and Delithiation at Various Temperatures

在线全文

学校读者我要写书评

暂无评论

Research 2021年第1期2021卷 1255-1265页

作者： Zeyu xu Xiuling Shi Xiaoqiang Zhuang Zihan Wang Sheng Sun kaikai Li Tong-Yi Zhang Materials Genome Institute Shanghai University333 Nanchen RoadShanghai 200444China School of Materials Science and Engineering Harbin Institute of TechnologyShenzhenChina

Electrochemical lithiation/delithiation of electrodes induces chemical strain cycling that causes fatigue and other harmful influences on lithium-ion *** this work,a homemade in situ measurement device was used to characterize simultaneously chemical strain and nominal state of charge,especially residual chemical strain and residual nominal state of charge,in graphite-based electrodes at various *** measurements indicate that raising the testing temperature from 20℃ to 60℃ decreases the chemical strain at the same nominal state of charge during cycling,while residual chemical strain and residual nominal state of charge increase with the increase of ***,a novel electrochemicalmechanical model is developed to evaluate quantitatively the chemical strain caused by a solid electrolyte interface(SEI)and the partial molar volume of Li in the SEI at different *** present study will definitely stimulate future investigations on the electro-chemo-mechanics coupling behaviors in lithium-ion batteries.

关键词： nominal cycling lithium

Effects of initial crystal size of diamond powder on surface residual stress and morphology in polycrystalline diamond (PCD) layer

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Science China(Physics,Mechanics & Astronomy) 2011年第1期54卷 98-101页

作者： JIA HongSheng JIA XiaoPeng xu Yue WAN LianRu JIE kaikai MA HongAn State Key Laboratory of Superhard Materials Jilin University Changchun 130012 China Test Science Experiment Center Jilin University Changchun 130021 China

Polycrystalline diamond compacts (PDC) were synthesized using diamond powder of average crystal size 3-20 μm by the Ni 70 Mn 25 Co 5 alloy infiltration technique at high temperature and high pressure (HPHT).The surface residual stress of polycrystalline diamond (PCD) layer was measured using micro-Raman spectroscopy with hydrostatic stress model and X-ray diffraction (XRD).Measurements of the stress levels of PCDs show that the residual compressive stresses range from 0.12 to 0.22 GPa,which increase with the crystal size of *** electron microscopy (SEM) was used to observe the morphology of initial diamond grains and PCD *** results indicate that PCD has a dense and interlaced microstructure with diamond-diamond (D-D) direct *** the smaller the crystal size of diamond,the better the growth of diamond direct bonding and the smaller the binder metal between diamond boundaries will be.

关键词：聚晶金刚石表面残余应力金刚石晶体断面形态 PCD 金刚石粉末平均晶粒尺寸扫描电子显微镜

Dyeing Thermodynamics and Supramolecular Structure of Lac Red on Protein Fibers

在线全文

学校读者我要写书评

暂无评论

Journal of Textile Science and Technology 2022年第2期8卷 89-106页

作者： Kewen Fu Jian Li Dongkai Qin Luwei Shi Xiangyu Ni kaikai Zhao Dequan xu Ailin Yuan Chunling Zheng College of Food Science and Light Industry Nanjing Tech University Nanjing China Institute of Textile Auxiliary and Ecological Dyeing Finishing Nanjing Tech University Nanjing China College of Chemistry and Chemical Engineering Wuhan Textile University Wuhan China

The dyeing temperature of natural dye lac red on two kinds of natural protein fibers was studied, and the interaction between dyestuff and fiber was discussed through thermodynamic study and density functional theory (DFT) calculation. The optimum temperature for lac red dyed silk was 60˚C and wool showed a better response at 90˚C. The thermodynamics study revealed good Nernst isotherm and Freundlich adsorption models respectively, and the lac dye adsorption processes were both spontaneous and exothermic. The potential interaction of Laccaic acid A with the external environment by electrostatic potential and atomic charge distribution was first explored. With molecular simulation, Laccaic acid A and glycine composed 8 stable complexes. Then, typical hydrogen bonds, bond length, and binding energy, etc. were analyzed. The results revealed lac red on silk and wool fabric mainly depended on the weak hydrogen bonds and van der Waals force which determined the low dye fastness.

关键词： Natural Dye Lac Red Wool Silk Dyeing Thermodynamics DFT Calculation Wavefunction

Effect of Micropowder Introduction on Synthesis of SiAlON-bonded SiC Products

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

China's Refractories 2019年第3期28卷 15-18页

作者： xu Dayan ZHOU kaikai ZHAI Wanyu FAN Yajuan WANG Guangqiang Sinosteel Refractory Co. Ltd.Luoyang 471039China School of Mechanical Engineering Dalian Jiaotong UniversityDalian 116028China School of Mechanical Engineering Zhengzhou University of Science and TechnologyZhengzhou 450064China

This work aims at preparing SiAlON-bonded SiC products with high SiAlON *** carbide fines,micropowders of Si,Al and alumina with different activities were premixed in a ball mill to obtain different composite *** silicon carbide particles,the composite micropowders and binder were wet *** shaping the specimens were fired under insulation from direct flame in a shuttle kiln at 1450℃in nitrogen *** chemical composition,microstructure,pore size distribution and CO resistance of the prepared specimens were *** results showed that:after introducing high-activity micropowder additives the SiAlON content grows from 14.8 mass%to 23.5 mass%;the amount of unreacted alumina and silicon nitride in the specimens falls from 8.78 mass%to 1.79 mass%;micropores with size under 1􀄃m increase from 30%to 68%;CO resistance reaches level A.

关键词： SiAlON carbon monoxide resistance pore size distribution activity