检索结果-南通市图书馆

International Journal of Minerals,Metallurgy and Materials 2024年第4期31卷 786-794页

作者： Xu Zhao naitao gao Shengcheng Wu Shaozhen Li Sujuan Wu School of Electrical and Electronic Engineering Wuhan Polytechnic UniversityWuhan 430023China Institute for Advanced Materials and Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials South China Academy of Advanced OptoelectronicsSouth China Normal UniversityGuangzhou 510006China

CsPbX_(3)-based(X=I,Br,Cl)inorganic perovskite solar cells(PSCs)prepared by low-temperature process have attracted much attention because of their low cost and excellent thermal ***,the high trap state density and serious charge recombination between low-temperature processed TiO_(2)film and inorganic perovskite layer interface seriously restrict the performance of all-inorganic *** a thin polyethylene oxide(PEO)layer is employed to modify TiO_(2)film to passivate traps and promote carrier *** impacts of PEO layer on microstructure and photoelectric characteristics of TiO_(2)film and related devices are systematically *** results suggest that PEO modification can reduce the surface roughness of TiO_(2)film,decrease its average surface potential,and passivate trap *** optimal conditions,the champion efficiency of CsPbI_(2)Br PSCs with PEO-modified TiO_(2)(PEO-PSCs)has been improved to 11.24%from 9.03%of reference ***,the hysteresis behavior and charge recombination have been suppressed in PEO-PSCs.

关键词： polyethylene oxide-modified TiO_(2) film low-temperature process CsPbI_(2)Br-based all-inorganic perovskite solar cells photo-voltaic performance

A simple fabrication method of germanium-based metasurfaces

在线全文

学校读者我要写书评

暂无评论

Chinese Optics Letters 2024年第7期22卷 117-120页

作者： Dongzhi Shan Jinsong gao Nianxi Xu naitao Song Hongda Wei Qiang Li Yi Zhao Hai Liu Qiao Sun Xiaonan Jiang Chao Li Zhiyu Zhang Key Laboratory of Optical System Advanced Manufacturing Technology Changchun Institute of OpticsFine Mechanics and PhysicsChinese Academy of SciencesChangchun 130033China State Key Laboratory of Applied Optics Changchun Institute of OpticsFine Mechanics and PhysicsChinese Academy of SciencesChangchun 130033China Jilin Provincial Key Laboratory of Advanced Optoelectronic Equipment and Instrument Manufacturing Technology Changchun 130033China

In this work,a simple fabrication method of germanium-based metasurfaces is proposed,where the deposited Al_(2)O_(3) layer with high selectivity is chosen as the hard mask and retained after the dry etching *** simulation and experimental characterization results verify the feasibility of the fabrication *** experimental study on the fabrication methods of germanium-based metasurfaces is very significant as the meta-atoms with a higher refractive index can achieve 0 to 2πtransmission phase variation with a smaller period under the same thickness-to-period ratio,which is consistent with the requirement of the period miniaturization in some cases.

关键词： metasurfaces period miniaturization refractive index.

Ultrawide-band optically transparent antidiffraction metamaterial absorber with a Thiessen-polygon metal-mesh shielding layer

在线全文

学校读者我要写书评

暂无评论

光子学研究:英文版 2023年第7期11卷 1354-1363页

作者： naitao SONG QIAO SUN SU XU DONGZHI SHAN YANG TANG XIAOXI TIAN NIANXI XU JINGSONG gao Key Laboratory of Optical System Advanced Manufacturing Technology Changchun Institute of OpticsFine Mechanics and PhysicsChinese Academy of SciencesChangchun 130033China State Key Laboratory of Applied Optics Changchun Institute of OpticsFine Mechanics and PhysicsChinese Academy of SciencesChangchun 130033China College of Da Heng University of Chinese Academy of SciencesBeijing 100049China State Key Laboratory of Integrated Optoelectronics College of Electronic Science and EngineeringJilin UniversityChangchun 130012China Jilin Provincial Key Laboratory of Advanced Optoelectronic Equipment and Instrument Manufacturing Technology Changchun 130033China

Transparent absorbers, with a functional integration of broadband electromagnetic shielding, microwave camouflage,and optical transparency, have attracted increasing attention in the past decades. Metal mesh, an artificial, optically transparent, conducting material composed of periodic metallic gratings, is the optimal choice for the microwave shielding layer of transparent absorbers because of its excellent compatibility between high transparency and low resistance. However, the micrometer-level periodicity of metallic grating concentrates the diffraction of light, which degrades the imaging quality of cameras and sensors in common. In this study, we report on a generalized Thiessenpolygon-randomization method that prevents the concentration of the diffraction of light in periodic metallic grating and demonstrate an ultrawide-band optically transparent diffraction-immune metamaterial absorber. The absorber is constructed with a multilayer indium-tin-oxide-based metasurface and a Thiessen-polygon-randomized metal-mesh reflector. The lossy metasurface provides multimode absorption, whereas the Thiessen-polygon randomization prevents the concentration of the diffraction of light. The practical sample achieves a 10 dB absorptivity and shielding effectiveness over a range of 8–26.5 GHz, and the optical transparency is also preserved over the entire visible and near-infrared regions. The point spread function and field of view are both improved by using the antidiffraction absorber. Our study paves the way for the application of optically transparent electromagnetic devices, display, and optoelectronic integration in a more practical stage. ? 2023 Chinese Laser Press.

关键词： absorber transparent polygon

耐高温PBI基质子-电子混合传导复合膜的构制及其氢渗透性能研究

在线全文

学校读者我要写书评

暂无评论

膜科学与技术 2020年第6期40卷 7-13页

作者：高波范议议孟秀霞靳昀孟波杨乃涛山东理工大学化学化工学院淄博255049

以3,3′-二氨基联苯胺(DABz)和间苯二甲酸(IPA)为原料,采用熔融聚合法合成了低分子量可耐高温的聚[2,2′-(间苯基)-5,5′-联苯并咪唑](mPBI)有机膜材料;以异氰尿酸三缩水甘油酯(TGIC)为交联剂,并浸渍磷酸提供质子传导路径,添加片状石墨... 详细信息

以3,3′-二氨基联苯胺(DABz)和间苯二甲酸(IPA)为原料,采用熔融聚合法合成了低分子量可耐高温的聚[2,2′-(间苯基)-5,5′-联苯并咪唑](mPBI)有机膜材料;以异氰尿酸三缩水甘油酯(TGIC)为交联剂,并浸渍磷酸提供质子传导路径,添加片状石墨作为电子导体,得到质子-电子混合导体mPBI-TGIC/石墨/H3PO4交联复合膜.对交联复合膜进行结构和性能表征,结果表明交联复合膜具有良好的机械性能和抗氧化稳定性.用于H2/CO2混合气体分离,300℃时,H2选择性高达100%,渗透量为4.93×10^-9 mol/(m^2·s·Pa);280℃时,可稳定运行160 h.表明mPBI-TGIC/石墨/H3PO4交联复合膜具有良好的耐高温性,有望用于工业高温气体的分离.

关键词：膜分离 PBI 质子-电子混合导体氢渗透耐高温

PVDF-HFP基凝胶固态聚合物电解质的合成与锂离子电池性能

在线全文

学校读者我要写书评

暂无评论

储能科学与技术 2021年第6期10卷 2077-2081页

作者：刘如亮高兴远尹伟杨乃涛广东第二师范学院化学系广东广州510303 广东省普通高校先进材料与节能减排工程技术开发中心广东广州510303 山东理工大学化学化工学院山东淄博255049

聚偏氟乙烯-六氟丙烯(PVDF-HFP)基凝胶聚合物电解质被认为是解决锂电安全性问题的一种有前途的固态电解质。然而,目前报道的是凝胶固态聚合物电解质由于含有大量易燃物质,安全性仍然无法保证。因此,本文合成制备基于PVDF-HFP的新型凝胶... 详细信息

聚偏氟乙烯-六氟丙烯(PVDF-HFP)基凝胶聚合物电解质被认为是解决锂电安全性问题的一种有前途的固态电解质。然而,目前报道的是凝胶固态聚合物电解质由于含有大量易燃物质,安全性仍然无法保证。因此,本文合成制备基于PVDF-HFP的新型凝胶聚合物电解质,使用丁二腈(SN)作为塑化剂,双三氟甲基磺酰胺亚锂(LiTFSI)作为锂盐,利用热交联法原位制备了高热稳定性的新型凝胶固态聚合物电解质(GSPE)。优化后的凝胶聚合物电解质离子电导率在25℃时可高达3.7×10^(−3)S/cm,电化学窗口室温下可达4.5 V。此外,凝胶聚合物电解质与电极具有良好的界面相容性;组装的磷酸铁锂电池在1 C下循环80次,容量保持率为89%。本项研究工作展示了高性能凝胶聚合物电解质对提升锂离子电池的循环稳定性与安全性具有较大潜在的应用价值。

关键词：锂离子电池凝胶固态聚合物电解质 PVDF-HFP 塑化剂

在线全文

学校读者我要写书评

暂无评论

金属有机框架材料在锂硫电池的应用前沿进展

化工进展 2021年第6期40卷 3046-3057页

作者：蔡诗怡李津瑜吴丽霞谢湘娟伍丽卿高兴远杨乃涛广东第二师范学院化学系广东广州510303 广东省普通高校先进材料与节能减排工程技术开发中心广东广州510303 山东理工大学化学化工学院山东淄博255049

锂硫电池是一种具有高理论比容量(1675mA·h/g)和能量密度(2600W·h/kg)的锂二次电池,被认为是最具前景的高储能二次电池体系之一。但硫的导电性差、多硫化物的穿梭效应等是阻碍锂硫电池实际应用的关键。本文聚焦于锂硫电池的发展趋势,... 详细信息

锂硫电池是一种具有高理论比容量(1675mA·h/g)和能量密度(2600W·h/kg)的锂二次电池,被认为是最具前景的高储能二次电池体系之一。但硫的导电性差、多硫化物的穿梭效应等是阻碍锂硫电池实际应用的关键。本文聚焦于锂硫电池的发展趋势,概述了锂硫电池面临的挑战和金属有机框架(MOF)材料潜在的解决方案。同时,在突出MOF材料多孔结构、富活性位点和功能配体等优势特点之外,也辩证地分析了其存在的导电性差等问题。综述了一系列MOF材料的设计和制备,包括自支撑MOF材料、MOF碳复合材料、MOF(导电)高分子复合材料、MOF衍生碳材料、MOF衍生金属/碳复合材料,同时阐释了MOF材料对于锂负极侧枝晶的抑制作用,深入阐释其构效关系,希望对于相关领域的研究者有所启发,以促进新能源新材料领域的理论和技术进步。

关键词：金属有机框架锂硫电池穿梭效应复合材料隔膜纳米材料