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Simplified p-i-n Perovskite Solar Cells with a Multifunctional Polyfullerene Electron Transporter

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Chinese Journal of Polymer Science 2024年第8期42卷 1060-1066页

作者： Fei-Fei Wang Tian-Xiao Liu Ze-Wei Cui Ling-Yuan Wang Yun-jie dou Xiao-Yu Shi Si-Wei Luo Xiao-Dong Hu Zhi-Jun Ren Yang-Yang Liu Yu Zhao Shang-Shang Chen State Key Laboratory of Coordination Chemistry MOE Key Laboratory of High Performance Polymer Materials&TechnologySchool of Chemistry and Chemical EngineeringNanjing UniversityNanjing 21003China

In prevailing p-i-n perovskite solar cells(PSCs),solution-processible fullerene molecules are widely used as electron-transporting layers(ETLs)but they typically suffer from poor uniformity and undesirable stability ***,a separate bathocuproine(BCP)layer is needed to block hole tran sfer,increasing fabrication complexity and ***,we address these limitations by develo ping a novel polymeric ETL(named PF BCP)synthesized by polymerizing C_(60)with *** innovative material achieves both efficient electron transport and hole blocking,while its excellent uniformity minimizes interface recombination and enhances ***,our blade-coated PSCs utilizing PFBCP achieve a high power conversion efficiency exceeding 22%and retain 91%of initial efficiency after 1200 h of light *** development not only paves the way for commercially viable PSCs but also opens avenues for future ETL design to realize even more efficient and stable PSCs.

关键词： Polyfullerene Perovskite solar cells Electron transporter Stability

基于PSO的电动汽车规模化充电接入配电网柔性负荷多目标优化控制

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汽车技术 2024年第6期 1-8页

作者：庞松岭范凯迪窦洁陈超海南电网有限责任公司电力科学研究院海口570226 智能电网与海岛微网联合实验室海口570110

为了降低电动汽车大规模接入配电网后产生的负荷波动和网损,提出了基于粒子群优化(PSO)算法的电动汽车规模化充电接入配电网柔性负荷多目标优化控制方法。首先,建立交通网-配电网耦合模型,并结合出行链模型分析用户的充电需求,搭建接入... 详细信息

为了降低电动汽车大规模接入配电网后产生的负荷波动和网损,提出了基于粒子群优化(PSO)算法的电动汽车规模化充电接入配电网柔性负荷多目标优化控制方法。首先,建立交通网-配电网耦合模型,并结合出行链模型分析用户的充电需求,搭建接入电动汽车能量状态预测模型;其次,以最小化配电网负荷波动标准差和网损作为优化目标,设计电动汽车规模化充电接入配电网柔性负荷多目标优化函数,同时引入分布熵设计惯性权重更新策略,优化PSO算法;最后,采用改进的PSO算法在函数约束条件的基础上实现配电网的柔性负荷控制。测试结果表明,所提出的方法可准确分析用户的充电需求,降低配电网负荷波动峰值及网损。

关键词：电动汽车粒子群优化算法出行链模型优化控制策略

基于LightGBM算法和出行链理论的电动汽车充电负荷多时间尺度预测模型

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汽车技术 2024年第6期 9-16页

作者：庞松岭范凯迪陈超窦洁海南电网有限责任公司电力科学研究院海口570226 智能电网与海岛微网联合实验室海口570110

为提高电动汽车充电负荷预测的准确性,设计了一种基于轻量级梯度提升机(LightGBM)算法和出行链理论的电动汽车充电负荷多时间尺度预测模型。利用出行链描述用户出行过程,采用蒙特卡洛法抽取时空数据,计算不同区域出行和停留时间的概率... 详细信息

为提高电动汽车充电负荷预测的准确性,设计了一种基于轻量级梯度提升机(LightGBM)算法和出行链理论的电动汽车充电负荷多时间尺度预测模型。利用出行链描述用户出行过程,采用蒙特卡洛法抽取时空数据,计算不同区域出行和停留时间的概率密度函数,采用牛顿法划分多时间尺度充电概率,明确驾驶时空分布与充电状况,并运用模糊数学定理与LightGBM分类充电负荷数据,构建了多季节多时段预测模型。采用LightGBM高效并行计算模式,明确充电负荷变化规律,实现了多时间尺度预测。试验结果表明:所建立的模型在不同季节和电动汽车数量条件下,预测误差低于100 kW,预测空报率低于3%,可准确展现充电负荷的变化规律。

关键词：轻量级梯度提升机出行链理论充电负荷多时间尺度预测模型

MOFs in Emerging Solar Cells

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Chinese Journal of Chemistry 2023年第6期41卷 695-709页

作者： jie dou Qi Chen Beijing Key Laboratory of Construction Tailorable Advanced Functional Materials and Green Applications Experimental Centerof Advanced MaterialsSchool of Materials Science&EngineeringBeijing Institute of TechnologyBeijing100081China Bejing Instituteof Technology Chongqing Innovation Center Chongqing 404100China

Metal-organic framework(MOF)materials have attracted intense scientific interest in the solar cell research community owing to their unique physiochemical properties and various preparation *** photovoltaic performance and stability of resultant optoelectronic devices can also be improved by adopting MOF *** review pays close attention to the summary and generalization of recent representative achievements in solar cells by utilizing MOFs,including dye-sensitized solar cells,perovskite solar cells,organic solar cells,and so on.

关键词： MOFs Synthetic methods Solar cells Photochemistry Sustainable chemistry Green chemistry

Zinc Stannate Nanostructures for Energy Conversion

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Chinese Journal of Chemistry 2021年第2期39卷 367-380页

作者： jie dou Qi Chen Beijing Key Laboratory of Construction Tailorable Advanced Functional Materials and Green Applications Experimental Center of Advanced MaterialsSchool of Materials Science&EngineeringBeijing Institute of TechnologyBeijing100081 China Beijing Institute of Technology Chongqing Innovation Center Chongqing 4004100Beijing100081 China

To date,ternary metal oxide semiconductor materials have attracted extensive attention worldwide due to their unique optoelectronic *** a classical ternary oxide,Zn2SnO4 is featured with the high electron mobility,wide band gap,negligible visible light absorption and tailorable electronic band ***,it is an ideal material for practical use in solar cells,lithium batteries,sensors,and *** this review,we summarize the recent research progress of this material with the focus on the synthesis methods,nanostructures,and the resulting effects on the crystal structure,optical properties,and photoelectrochemical ***,their potential applications in different devices are highlighted and carefully discussed.

关键词： Zinc stannate Synthesis design Nanostructures Applications Energy conversion

Interfacial Engineering for Improved Stability of Flexible Perovskite Solar Cells

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Energy Material Advances 2022年第1期2022卷 1-15页

作者： jie dou Qi Chen Beijing Key Laboratory of Construction Tailorable Advanced Functional Materials and Green Applications MIIT Key Laboratory for Low-Dimensional Quantum Structure and DevicesExperimental Center of Advanced MaterialsSchool of Materials Science and EngineeringBeijing Institute of TechnologyBeijing 100081China

Because of unique optoelectronic properties,such as extended carrier lifetime,large absorption coefficient,high defect tolerance factor,low exciton binding energy,and ambipolar diffusion,metal halide perovskites display enormous potential for the next generation of *** perovskite solar cells with low weight,high flexibility,and conformability have attracted attention for portable electronic *** interface is crucial in perovskite solar cells for both photovoltaic efficiency and operational stability.A high-quality interface could be obtained through interface ***,we summarize the degradation mechanisms and review interfacial engineering with the emphasis on their effects in flexible perovskite solar *** the basis of recent research progress in flexible devices,current challenges,possible directions,and perspectives are *** would be helpful to promote the commercialization of flexible perovskite solar cells.

关键词： stability. perovskite interface

Multi-agent coverage control for enhanced geohazard monitoring: a brief review

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Control Theory and Technology 2021年第3期19卷 418-420页

作者： Chao Zhai Zhaoxu Wang jie dou School of Automation China University of GeosciencesWuhan430074China Hubei Key Laboratory of Advanced Control and Intelligent Automation for Complex Systems WuhanChina Engineering Research Center of Intelligent Technology for Geo-Exploration Ministry of EducationWuhanChina Three Gorges Research Center for Geo-Hazards Ministry of EducationChina University of GeosciencesWuhan430074China

In recent years,cooperative coverage control of multi-agent system(MAS)has attracted plenty of researchers in various fields[1,2].Different from multi-agent consensus or synchronization,multi-agent coverage control cares about how to coordinate a team of agents for effectively monitoring or covering a given terrain,which inevitably gives rise to the interaction between individual dynamics and external ***,environmental uncertainties that include static uncertainties and dynamic uncertainties and limited sensing capabilities of a single agent make it a great challenge to design control algorithms of MAS for achieving the desired coverage performance.

关键词： agent plenty coverage

基于优化负样本采样策略的梯度提升决策树与随机森林的汶川同震滑坡易发性评价

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地质科技通报 2024年第3期43卷 251-265页

作者：郭衍昊窦杰向子林马豪董傲男罗万祺中国地质大学(武汉)湖北巴东地质灾害国家野外科学观测研究站武汉430074

强震诱发的滑坡具有数量多、分布广、规模大等特点,严重威胁人民生命财产安全。滑坡易发性评价能够快速预测灾害空间分布,对于减轻震后灾害的危险性具有重要意义。在同震滑坡易发性评价研究中,如何选取滑坡负样本并通过耦合机器学习模... 详细信息

强震诱发的滑坡具有数量多、分布广、规模大等特点,严重威胁人民生命财产安全。滑坡易发性评价能够快速预测灾害空间分布,对于减轻震后灾害的危险性具有重要意义。在同震滑坡易发性评价研究中,如何选取滑坡负样本并通过耦合机器学习模型提高评价精度的对比研究仍需进一步研究。以山区汶川地震诱发的滑坡为研究区,首先选取地形地貌、地质环境、地震参数等10个滑坡评价因子,分析滑坡空间分布规律;其次因子共线性分析检验数据冗余,接下来采用频率比法(FR)选取极低、低易发区滑坡负样本点的采样策略;最后采用基于决策树演化改进的梯度提升决策树(GBDT)、随机森林(RF)和耦合模型(FR-GBD与FR-RF),开展了基于机器学习的同震滑坡易发性区划并进行精度评价。研究结果表明:①滑坡空间分布受到多层级因子控制;②模型预测精度为:FR-RF(AUC=0.943)>FR-GBDT(AUC=0.926)>RF(AUC=0.901)>GBDT(AUC=0.856);③在低易发区选择滑坡负样本可以明显提高易发性精度。研究成果可为滑坡易发性中负样本的选择和评价模型构建提供参考同时也为震后滑坡的防灾减灾提供理论支持。

关键词：随机森林(RF) 梯度提升决策树(GBDT) 机器学习频率比法(FR) 采样策略同震滑坡滑坡易发性区划

Bavachin induces apoptosis in colorectal cancer cells through Gadd45a via the MAPK signaling pathway

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Chinese Journal of Natural Medicines 2023年第1期21卷 36-46页

作者： WANG Mengru TIAN Baopeng SHEN jie XU Shilin LIU Cong GUAN Ling GUO Min dou jie College of Life Science and Technology China Pharmaceutical UniversityNanjing 211198China

Bavachin is a dihydroflavonoid compound isolated from Psoralea corylifolia,and exhibits anti-bacterial,anti-inflammatory,anti-tumor and lipid-lowering *** attention has gradually drawn on bavachin-induced apoptosis in many human cancer cell ***,the anti-cancer effects and related mechanisms in colorectal cancer remain ***,we investigated the effects of bavachin on colorectal cancer in vivo and in *** results showed that bavachin inhibited the proliferation of human colorectal cancer cells and induce *** changes were mediated by activating the MAPK signaling pathway,which significantly up-regulated the expression of ***,Gadd45a silencing obviously attenuated bavachin-mediated cell *** of the MAPK signaling pathway by JNK/ERK/p38 inhibitors also weakened the up-regulation of Gadd45a by *** anticancer effect of bavachin was also validated using a mouse xenograft model of human colorectal *** conclusion,these findings suggest that bavachin induces the apoptosis of colorectal cancer cells through activating the MAPK signaling pathway.

关键词： Bavachin Apoptosis Colorectal cancer Gadd45a MAPK