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Heterojunction Incorporating Perovskite and Microporous Metal–Organic Framework Nanocrystals for Efficient and Stable Solar Cells

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Nano-Micro Letters 2020年第6期12卷 203-213页

作者： Xuesong Zhou Lele Qiu ruiqing fan Jian Zhang Sue Hao Yulin Yang MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage School of Chemistry and Chemical EngineeringHarbin Institute of TechnologyHarbin 150001People’s Republic of China

In this paper,we present a facile approach to enhance the efficiency and stability of perovskite solar cells(PSCs)by incorporating perovskite with microporous indium-based metal–organic framework[In12O(OH)16(H2O)5(btc)6]n(In-BTC)nanocrystals and forming heterojunction light-harvesting *** interconnected micropores and terminal oxygen sites of In-BTC allow the preferential crystallization of perovskite inside the regular cavities,endowing the derived films with improved morphology/crystallinity and reduced grain boundaries/***,the In-BTC-modified PSC yields enhanced fill factor of 0.79 and power conversion efficiency(PCE)of 20.87%,surpassing the pristine device(0.76 and 19.52%,respectively).More importantly,over 80%of the original PCE is retained after 12 days of exposure to ambient environment(25°C and relative humidity of^65%)without encapsulation,while only about 35%is left to the pristine device.

关键词： Metal–organic framework Nanocrystal Heterojunction Light-harvesting layer Perovskite solar cell

Synthesis and Crystal Structure of 1D Cd-amine Coordination Polymer and Its Luminescent Properties

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Chemical Research in Chinese Universities 2014年第5期30卷 720-725页

作者： XU Mengying LIU Zhigang fan ruiqing GAO Song CHEN Shuo YANG Yulin Department of Chemistry Harbin Institute of Technology Harbin 150001 P. R. China

A novel one dimension（1D） cadmium coordination polymer {[Cd（mpda）3]·2（NO3）}n（1） was synthesized via refluxing a mixture of tetradentate Schiff base ligand N,N＇-bis（2-pyridinylethylidene）phenylene-1,3-diamine（L） and Cd（NO3）2 in acetonitrile, whose structure was characterized by means of single crystal X-ray diffraction, FTIR spectroscopy, elemental analysis and proton nuclear magnetic resonance（1H NMR）. Center metal Cd（II） ion is six-coordinated by six nitrogen atoms from six different m-phenylenediamine（mpda）, giving rise to a [CdN6] octahe- dral coordination environment. The two adjacent cadmium centers are linked by three mpda molecules leading to the construction of 1D chain structure. The crystal structure is stabilized by N-H…O hydrogen bonds to form three-dimension supramolecule. Compound 1 exhibits intense yellow luminescence in solid state at 298 K（λem=554 nm）, which shows a blue shift at 77 K（ca. 147 nm）. Additionally, fluorescence characteristics of compound 1 were investigated in different solvents（polarity： DMSO〉CH3CN〉CH3OH〉CHC13〉toluene） at 298 and 77 K. The results show that the emission peak of compound 1 in solvent exhibits a slight bathochromic shift. However, the emission peaks of compound 1 in CH3OH and CHC13 are red shift compared with that in CH3CN. It is revealed that the lumi- nescence behavior of compound 1 depends on not only the polarity of solvent but also the hydrogen bonding proper- ties between solvent and solute. In addition, the emission peak of compound 1 in solution shows a red shift obviously at 77 K than that at 298 K（ca. 144-159 nm）, with the fluorescence lifetime increased at 77 K. The lifetime in DMSO at 77 K（r=12.470μs） was the longest one. The quantum yield of compoud 1 increases with increasing the polarity of solvent within a range of 1.8%-8.3 %.

关键词： Schiffbase Cd(II)-amine compound Luminescence Crystal structure

Tetra-phthalimide end-fused bifluorenylidene: Synthesis and characterization

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Chinese Chemical Letters 2019年第1期30卷 259-262页

作者： Debin Xia fangyuan Zhang Zhigang Liu Linghao Meng ruiqing fan Yulin Yang MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage School of Chemistry and Chemical Engineering Harbin Institute of Technology

A novel electron acceptor, namely, tetra-phthalimide end-fused bifluorenylidene(3 D-imide) was designed and synthesized. In comparison to its framework analogue 12,12'-bidibenzo[b,h]fluorenylidene(BF-3), the electron withdrawing capability and optical absorption were strengthened and enlarged,respectively. Moreover, photoluminescence quenching experiments were carried out, which confirmed 3D-imide could be a good candidate for nonfullene organic photovoltaics. Finally, we gained more insight into its electronic properties through density functional theory calculation.

关键词： Bifluorenylidene Polycycles Electron acceptor Twisting Three dimensional

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作战模拟中基于不规则三角网的路径规划研究

电子设计工程 2024年第20期32卷 153-157页

作者：陈喜春张文芳李美华范瑞青于妍陆军步兵学院石家庄校区模拟训练中心河北石家庄050083

针对分队级作战模拟的路径规划问题,该文采用了一种基于不规则三角网的路径规划方法,通过将作战地图上的面状区域进行三角网剖分,区分地貌、地物设置三角面的属性,以描述不同三角网之间的可通行性,并在此基础上利用A*算法寻路,可以快速... 详细信息

针对分队级作战模拟的路径规划问题,该文采用了一种基于不规则三角网的路径规划方法,通过将作战地图上的面状区域进行三角网剖分,区分地貌、地物设置三角面的属性,以描述不同三角网之间的可通行性,并在此基础上利用A*算法寻路,可以快速实现路径规划。非路网的路径规划将使作战模拟中实体的行为更加逼真,达到了野战环境下运动规划的目的。

关键词：作战模拟路径规划不规则三角网战场环境机动路线

Metal-organic frameworks with mixed-ligands strategy as heterogeneous nucleation center to assist crystallization for efficient and stable perovskite solar cells

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Journal of Energy Chemistry 2023年第2期77卷 1-10,I0001页

作者： Yayu Dong Shuang Gai Jian Zhang ruiqing fan Boyuan Hu Wei Wang Wei Cao Jiaqi Wang Ke Zhu Debin Xia Lin Geng Yulin Yang MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage School of Chemistry and Chemical EngineeringHarbin Institute of TechnologyHarbin 150001HeilongjiangChina School of Materials Science and Engineering Harbin Institute of TechnologyHarbin 150001HeilongjiangChina

Deep-level defects and random oriented configuration in perovskite crystallization process would cause the nonradiative recombination and further affect the performance of perovskite solar cells(PSCs).Herein,two metal-organic frameworks(MOFs)with tunable Lewis-base passivation sites have been constructed(Cd-Httb and Cd-Httb-BDC,Httb=5-(4-(1H-1,2,4-triazole-1-yl)benzyl)-1h-tetrazole,BDC=1,4-dicarboxybenzene)to eliminate deep-level defects and simultaneously as nanostructured heterogeneous nucleation seed to assist the growth of large-grained perovskite *** with the control and Cd-Httb,Cd-Httb-BDC designed with mix-ligands strategy exhibited the enhanced inducted effect on the crystallization and nucleation of high-quality perovskite films during annealing ***,the resultant Cd-Httb-BDC-modified device achieved higher power conversion efficiency(PCE)(22.18%)than the control(20.89%)and Cd-Httb(21.56%).Meanwhile,the unencapsulated Cd-Httb-BDC-modified device still maintained 90%of initial PCE after 1500 h in ambient conditions and exhibited enhanced thermal stability(85℃ in N_(2) atmosphere).This work presented a successful example of mixligands strategy on construction of high-quality MOF-assisted perovskite films for high-efficient and stable PSCs.

关键词： Perovskite solar cells Metal organic frameworks Mixed ligands strategy Passivation Stability

Three-dimensional Flower-like Rutile TiO2 Microsphere Composed of Nanorods： a Potential Material as Light Scattering Layer for DSSCs

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Chemical Research in Chinese Universities 2017年第2期33卷 298-304页

作者： Yan Shi (1) Yulin Yang (1) Guohua Dong (1) (2) Yanxia Jiang (1) Liguo Wei (3) Ting Su (1) ruiqing fan (1) 1. MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage School of Chemistry and Chemical Engineering Harbin Institute of Technology Harbin 150001 P. R. China 2. College of Chemistry and Chemical Engineering Qiqihar University Qiqihar 161006 P. R. China 3. College of Environmental and Chemical Engineering Heilongjiang University of Science and Technology Harbin 150022 P. R. China

The low spectrum utilization and the recombination of photo-generated electrons are the main challengesfor improving the performance of dye sensitized solar cells（DSSCs）. In this article, a three-dimensional flower-likeruffle titanittm dioxide（TDF-TiO2） was successfully synthesized via a simple sol-thermal process. X-Ray diffractionpatterns（XRD） and scan electron microscopy（SEM） images exhibit that the TDF-TiO2 are the futile TiO2 microspherecomposed of lots of regular cuboid nanorods. Applying this TDF-TiO2 as light scattering layer on the photoanode ofDSSCs, the devices present an excellent photovoltage performance, yielding a power conversion efficiency（PCE） of7.69%, which can be mainly attributed to the enhanced light utilization and the reduced recombination of pho-to-generated electrons upon a combined analysis of electrochemical impedance spectroscopy（EIS）, open-circuit vol-tage decay（OCVD）, and intensity-modulated photocurrent spectroscopy and intensity-modulated photo voltage spec-troscopy（IMPS/1MVS）, etc. As a conclusion, TDF-TiO2 is a potential material as light scattering layer and opticaltransition medium to improve the performance of DSSCs, and this work further demonstrated that regulating themorphology and particle size of TiO2 is an efficient approach for enhancing the performance of DSSCs by optimizingthe utilization of light and the transporting behaviors of photo-generated electrons.

关键词： Dye sensitized solar cell Photoanode Three-dimensional flower-like rutile TiO2 Light scattering layer

Improved Performance of Dye-sensitized Solar Cells Based on TiO2 with Enhanced Near-Infrared to Visible Upconversion Luminescence

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Improved Performance of Dye-sensitized Solar Cells Based on ...

Characteristics of transfer zones under the influence of preexisting faults and regional stress transformation:Wenchang A subsag,Zhujiang River Mouth Basin,northern South China Sea

中国化学会第九届全国无机化学学术会议

作者： Jia Yu Yulin Yang ruiqing fan Department of Chemistry Harbin Institute of Technology

We studied fluorine doped Ti O2 nano-crystalline modified with rare earth ions. With the help of up-conversion luminescence, more light can be efficiently utilized by dye sensitized solar cells. We found that fluorine ion not only played the role of profile control agent, but also enhanced the up-conversion luminescence of rare earth ions. Our study showed that Ti O2 based upconversion nano-crystalline can convert the NIR light in situ to the dye-sensitive visible light that could effectively reduce the distance between upconversion materials and sensitizers, minimize the loss of the converted light and therefore greatly improve the photoelectric conversion efficiency.

关键词： Ti O2 upconversion fluorine doping photoluminescence enhancement dye sensitized solar cells

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Journal of Oceanology and Limnology 2024年第3期42卷 744-759页

作者： Wei LI Mingyue CAO Meifang MENG Caiwei fan Hui LI Jia LI Wanqiu WU ruiqing QIN Xingan LI Yiming LIU State Key Laboratory of Deep Oil and Gas China University of Petroleum(East China)Qingdao 266580China School of Geosciences China University of Petroleum(East China)Qingdao 266580China Zhanjiang Branch China National Offshore Oil Corporation CompanyZhanjiang 524057China

A transfer zone in rift basins preserves important information on regional tectonic evolution and plays significant roles in hydrocarbon *** on the systematic analysis of 3D seismic data and hydrocarbon accumulation conditions,the geometry,kinematics,and reservoir control of a large synthetic overlapping transfer zone in the south of the Wenchang A subsag in the Zhujiang(Pearl)River Mouth basin were *** indicate that the development and evolution of the transfer zone was controlled by the interaction between pre-existing faults and regional stress *** intense rifting of the main faults of the transfer zone controlled the development of source rocks and faultcontrolled slope break *** strike-slip overprint since the Oligocene is conducive to the formation of a large-scale fault-anticline trap,and the secondary faults in the transfer zone contribute to the hydrocarbon *** conjugate intersection area of the NE-and NW-trending faults offers more opportunity for hydrocarbon migration and accumulation.

关键词： transfer zone pre-existing fault regional stress transformation Cenozoic Wenchang A Subsag Zhujiang(Pearl)River Mouth Basin

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基于故障分量的相位相关电流差动保护

电力系统自动化 2011年第3期35卷 54-58页

作者：李斌曾红艳范瑞卿薄志谦天津大学电力系统仿真控制教育部重点实验室天津市300072 英国AREVA输配电自动化公司斯塔福德郡STl74LX英国电力系统国家重点实验室清华大学电机系北京市100084

基于基尔霍夫电流定律的电流差动保护作为电力系统中各种设备的主保护得到广泛应用。鉴于负荷电流的影响,故障分量的差动保护在消除负荷电流影响、提高抗过渡电阻能力方面具有明显的优越性。分析了差动两侧故障分量电流的幅值和相位特征... 详细信息

基于基尔霍夫电流定律的电流差动保护作为电力系统中各种设备的主保护得到广泛应用。鉴于负荷电流的影响,故障分量的差动保护在消除负荷电流影响、提高抗过渡电阻能力方面具有明显的优越性。分析了差动两侧故障分量电流的幅值和相位特征,提出了基于故障分量的相位相关电流差动保护原理。与传统比率差动保护、标积制动的差动保护在复数平面上进行了比较,理论证明了新原理能够同时保障外部故障可靠性和内部故障灵敏性,并就电流互感器饱和情况下对差动保护的影响进行了分析比较。理论分析和仿真验证证明了新原理优良的动作性能。

关键词：电流差动保护电流相位差电流互感器饱和过渡电阻