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Highly ordered crystallization of α-FAPbl_(3) films via homogeneous seeds for efficient perovskite solar cells

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Journal of Energy Chemistry 2024年第7期94卷 625-634页

作者： guohui Luo Linfeng Zhang Liyun guo Xiuhong Geng Penghui Ren Yi Zhang Haihua Hu Xiaoping Wu lingbo Xu Ping Lin Haiyan He Xuegong Yu Peng Wang Can Cui Key Laboratory of Optical Field Manipulation of Zhejiang Province Department of PhysicsZhejiang Sci-Tech UniversityHangzhou 310018ZhejiangChina Zhejiang Provincial Key Laboratory of Fiber Materials and Manufacturing Technology Zhejiang Sci-Tech UniversityHangzhou 310018ZhejiangChina Hangzhou City University Hangzhou 310015ZhejiangChina Key Laboratory of Solar Energy Utilization and Energy Saving Technology of Zhejiang Province Zhejiang Baima Lake Laboratory Co.Ltd.Hangzhou 310012ZhejiangChina State Key Laboratory of Silicon Materials and School of Materials Science and Engineering Zhejiang UniversityHangzhou 310027ZhejiangChina

Formamidine lead triiodide(FAPbI_(3))perovskites have become the most promising photovoltaic materials for perovskite solar cells with record power conversion efficiency(PCE).However,random nucleation,phase transition,and lattice defects are still the key challenges limiting the quality of FAPbI_(3) *** studies show that the introduction or adding of seeds in the precursor is effective to promote the nucleation and crystallization of perovskite ***,the seed-assisted approach focuses on heterogeneous seeds or hetero-composites,which inevitably induce a lattice-mismatch,the genera-tion of strain or defects,and the phase segregation in the perovskite ***,we first demonstrate that high-quality perovskite films are controllably prepared using α-and δ-phases mixed FAPbI_(3) micro-crystal as the homogeneous seeds with the one-step antisolvent *** partially dissolved seeds with suitable sizes improve the crystallinity of the perovskite flm with preferable orientation,improved carrier lifetime,and increased carrier *** importantly,the α-phase-containing seeds promote the formation of α-phase FAPbI_(3) films,leading to the reduction of residual lattice strain and the suppres-sion of I-ion ***,the adding of dimethyl 2,6-pyridine dicarboxylate(DPD)into the pre-cursor further suppresses the generation of defects,contributing to the PCE of devices prepared in air ambient being significantly improved to 23.75%,among the highest PCEs for fully air-processed FAPbI_(3) solar *** unpackaged target devices possess a high stability,maintaining 80%of the initial PCE under simulated solar illumination exceeding 800 h.

关键词： Perovskite solar cells FAPbI_(3) Homogeneous seeds Strain Phase stability

Innovations in metallurgical and materials processes:advancing liquid theory and honoring ***-jie guo's contributions to physical chemistry in metallurgy

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Journal of Iron and Steel Research International 2024年第1期31卷 1-2页

作者： Shuai Liu Jing guo Han-jie guo School of Artificial Intelligence Beijing Technology and Business UniversityBeijing100048China School of Metallurgical and Ecological Engineering University of Science and Technology Beijing(USTB)Beijing100083China

Spanning three decades,***-jie guo's research group has dedicated itself to exploring the fundamental theories and practical applications of physical chemistry within the realm of *** under the assumption that molecul... 详细信息

关键词： chemistry liquid complexes

考虑裂隙动态变化时裂隙土土水特征曲线的预测方法研究

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岩石力学与工程学报 2013年第6期32卷 1288-1296页

作者：李锦辉郭凌波张利民哈尔滨工业大学深圳研究生院土木与环境工程学院广东深圳518055 深圳华森建筑与工程设计顾问有限公司广东深圳518054 香港科技大学土木与环境工程系

裂隙广泛分布于表土中,为土中渗流提供优势通道,导致土中渗透系数增大。裂隙土的土水特征曲线(SWCC)是分析裂隙土渗流问题的关键因素。考虑裂隙的动态变化,提出一种预测裂隙土土水特征曲线的新方法,并通过实例分析对此方法进行试验验证... 详细信息

裂隙广泛分布于表土中,为土中渗流提供优势通道,导致土中渗透系数增大。裂隙土的土水特征曲线(SWCC)是分析裂隙土渗流问题的关键因素。考虑裂隙的动态变化,提出一种预测裂隙土土水特征曲线的新方法,并通过实例分析对此方法进行试验验证。将裂隙土系统分为裂隙网络系统和土体系统两部分,将相同状态下2种孔隙系统的土水特征曲线组合得到裂隙土在该状态下的土水特征曲线。随着裂隙的开展,可以得到裂隙发展路径上不同状态下裂隙土的土水特征曲线。将裂隙发展路径上不同状态下裂隙土的土水特征曲线进行合理组合,即可得到考虑裂隙动态变化时裂隙土的土水特征曲线。通过室内试验模拟裂隙在土样脱湿过程和吸湿过程中的动态变化,测定脱湿过程中的SWCC,用所提出的方法预测考虑裂隙动态变化时裂隙土的土水特征曲线,并将预测结果与试验结果进行对比。预测和试验结果都显示,裂隙土的土水特征曲线呈双峰特征。在达到土体的进气值之前,曲线由裂隙网络控制;当基质吸力较大时,曲线由土体的SWCC控制。试验结果与理论预测基本一致。

关键词：土力学裂隙土土水特征曲线非饱和土渗流

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数据链数据过滤器技术研究

网络安全技术与应用 2013年第6期 15-17页

作者：郭灵波中国电子科技集团第二十八研究所江苏210007

本文主要研究数据过滤器技术在数据链中的应用,并在此基础上提出了数据过滤器的关键技术,在数据管理和资源分配等工程领域具有参考价值。

关键词：战术数据链数据过滤器多链网络

Emerging direct current triboelectric nanogenerator for high-entropy mechanical energy harvesting

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Science China(Technological Sciences) 2024年第5期67卷 1297-1316页

作者： CHEN Jie guo RuiLong guo HengYu College of Physics and Electronic Engineering Chongqing Normal UniversityChongqing 401331China Department of Applied Physics Chongqing UniversityChongqing 401331China

In the era of the Internet of Things(IoT),the provision of sustainable power to distributed,mobile,and low-power-consumption electronic devices is a critical *** overcome this challenge,the triboelectric nanogenerator(TENG),a highly efficient high-entropy mechanical energy harvesting device,was developed in *** device enables the direct conversion of irregular and low-frequency mechanical energy into pulsed alternating current(AC)***,the incompatibility of most electronic devices with AC signals necessitates rectifier circuits or generators that deliver direct current(DC)*** recent years,DC-TENGs have undergone extensive development,achieving significant milestones in various application fields while also facing crucial challenges that require *** this review,three categories of DC-TENG devices with distinct operating mechanisms are comprehensively explored:multiphase coupling,mechanical rectification,and air *** typical structures and working mechanisms are thoroughly discussed,and specific output performance limitations,along with corresponding optimization strategies,are ***,the applications of DC-TENGs in various scenarios are ***,the challenges faced by DC-TENGs and potential solutions are analyzed to guide further advancements in this technology.

关键词： TENG direct current working mechanisms output performance limitations optimization strategies

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数据链J系列消息研究

网络安全技术与应用 2013年第5期 61-63页

作者：郭灵波中国电子科技集团第二十八研究所江苏210007

J系列消息标准是美军战术数据链J所采用的固定格式消息标准,是美军战术数据链J的主要消息形式。本文研究了美军各种主流战术数据链及其消息标准,分析了J系列消息的数据结构、元素字典,在此基础上提出了J系列消息的验证测试方法。

关键词：战术数据链消息元素字典验证测试

Physicochemical principles of hydrogen metallurgy in blast furnace

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Journal of Iron and Steel Research International 2024年第1期31卷 46-63页

作者： Han-jie guo School of Metallurgical and Ecological Engineering University of Science and Technology BeijingBeijing100083China Beijing Key Laboratory of Special Melting and Preparation of High-End Metal Materials Beijing100083China

Based on the stoichiometric method and the free energy minimization method,an ideal model for the reduction of iron oxides by carbon and hydrogen under blast furnace conditions was established,and the reduction efficiency and theoretical energy consumption of the all-carbon blast furnace and the hydrogen-rich blast furnace were *** results show that after the reduction reaction is completed at the bottom of the blast furnace,the gas produced by reduction at 1600℃still has a certain excessive reduction capacity,which is due to the hydrogen brought in by the hydrogen-rich blast as well as the excess carbon monoxide generated by the reaction of the coke and the oxygen brought in by the *** the process of the gas with excessive reduction capacity rising from the bottom of the blast furnace and gas reduction process,the excessive reduction capacity of the gas gradually decreases with the increase in the dydrogen content in the *** the all-carbon blast furnace,the excess gas reduction capacity is the strongest,and the total energy consumption per ton of iron reduction is the *** shows that,for the current operation mode of the blast furnace,adding hydrogen in the blast furnace cannot reduce the consumption of carbon required for reduction per ton of iron,but rather increases the consumption of carbon.

关键词： Hydrogen metallurgy Excess gas reduction capacity Theoretical energy consumption Hydrogen-rich blast furnace Thermodynamic model Gibbs minimum free energy method

Control Strategies for Digital Twin Systems

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IEEE/CAA Journal of Automatica Sinica 2024年第1期11卷 170-180页

作者： guo-Ping Liu IEEE the Center for Control Science and Technology Southern University of Science and TechnologyShenzhen 518055China

With the continuous breakthrough in information technology and its integration into practical applications, industrial digital twins are expected to accelerate their development in the near future. This paper studies various control strategies for digital twin systems from the viewpoint of practical *** make full use of advantages of digital twins for control systems, an architecture of digital twin control systems, adaptive model tracking scheme, performance prediction scheme, performance retention scheme, and fault tolerant control scheme are proposed. Those schemes are detailed to deal with different issues on model tracking, performance prediction, performance retention, and fault tolerant control of digital twin systems. Also, the stability of digital twin control systems is analysed. The proposed schemes for digital twin control systems are illustrated by examples.

关键词： Digital twin control systems fault tolerant control model tracking performance prediction performance retention

相变材料对风冷式冰箱冷藏室内温度波动的影响

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北京工业大学学报 2017年第10期43卷 1563-1568页

作者：刘忠宝郭领波李骜赵丹峰北京工业大学环境与能源工程学院北京100124

为了解决冰箱冷藏室温度波动较大的问题,为食品提供更好的储藏环境,提出在冷藏室应用相变蓄冷材料的方法,通过延缓冷藏室的温度变化,达到降低冷藏室的温度波动.在冰箱冷藏室内应用相变材料进行实验.结果显示:应用相变材料后,冰箱冷藏室... 详细信息

为了解决冰箱冷藏室温度波动较大的问题,为食品提供更好的储藏环境,提出在冷藏室应用相变蓄冷材料的方法,通过延缓冷藏室的温度变化,达到降低冷藏室的温度波动.在冰箱冷藏室内应用相变材料进行实验.结果显示:应用相变材料后,冰箱冷藏室的温度波动明显降低,波动幅度由原来的2.57℃降为1.00℃.应用相变材料可以降低冷藏室的温度波动,实现温度波动较小的目标.

关键词：冷藏室温度波动相变材料