检索结果-内蒙古大学图书馆

Over 12%efficient kesterite solar cell via back interface engineering

Journal of Energy Chemistry 2022年第12期75卷 321-329,I0008页

作者： Yunhai Zhao Zixuan Yu Juguang Hu Zhuanghao Zheng Hongli Ma Kaiwen Sun Xiaojing Hao Guangxing Liang Ping Fan Xianghua Zhang Zhenghua Su Shenzhen Key Laboratory of Advanced Thin Films and Applications Key Laboratory of Optoelectronic Devices and SystemsCollege of Physics and Optoelectronic EngineeringShenzhen UniversityShenzhen 518060GuangdongChina CNRS ISCR(Institut des Sciences Chimiques de Rennes)UMR 6226Univ RennesRennes F-35000France School of Photovoltaic and Renewable Energy Engineering UNSW SydneySydney NSW 2052Australia Shenzhen University Institute of Microscale Optoelectronics Shenzhen UniversityShenzhen 518060GuangdongChina

Kesterite Cu_(2)ZnSn(S,Se)_(4)(CZTSSe)has attracted considerable attention as a non-toxic and earthabundant solar cell *** selenization of CZTSSe film at high temperature,the reaction between CZTSSe and Mo is one of the main reasons that result in unfavorable absorber and interface quality,which leads to large open circuit voltage deficit(VOC-def)and low fill factor(FF).Herein,a WO_(3)intermediate layer introduced at the back interface can effectually inhibit the unfavorable interface reaction between absorber and back electrode in the preliminary selenization progress;thus high-quality crystals are *** this back interface engineering,the traditional problems of phase segregation,voids in the absorber and over thick Mo(S,Se)_(2)at the back interface can be well solved,which greatly lessens the recombination in the bulk and at the *** increased minority carrier diffusion length,decreased barrier height at back interface contact and reduced deep acceptor defects give rise to systematic improvement in VOCand FF,finally a 12.66%conversion efficiency for CZTSSe solar cell has been *** work provides a simple way to fabricate highly efficient solar cells and promotes a deeper understanding of the function of intermediate layer at back interface in kesterite-based solar cells.

关键词： Cu_(2)ZnSn(S Se)_(4) WO_(3)intermediate layer Crystal growth Minority carrier diffusion length Interface contact quality

来源：评论

学校读者我要写书评

暂无评论

Lead-free inorganic perovskite CsBi3I10 thin film solar cell

Lead-free inorganic perovskite CsBi3I10 thin film solar cell

引用

2018 Photonics for Energy, PFE 2018, Part of International Photonics and Optoelectronics Meeting, POEM 2018

作者： Chen, Xing-Ye Lan, Hua-Bin Liang, Guang-Xing Fan, Ping Shenzhen Key Laboratory of Advanced Thin Films and Applications College of Physics and Energy Shenzhen University Shenzhen518060 China

ISBN: (纸本)9781557528209

关键词： Perovskite

来源：评论

学校读者我要写书评

暂无评论

Spin-coating Zn-Sn-O buffer layer for thin films solar cells

Spin-coating Zn-Sn-O buffer layer for thin films solar cells

引用

2018 Photonics for Energy, PFE 2018, Part of International Photonics and Optoelectronics Meeting, POEM 2018

作者： Xie, Zhigao Su, Zhenghua Liang, Guangxing Fan, Ping Shenzhen Key Laboratory of Advanced Thin Films and Applications College of Physics and Energy Shenzhen University Shenzhen518060 China

ISBN: (纸本)9781557528209

Zn-Sn-O (ZTO) buffer layers for thin film solar cell are deposited by low cost spin-coating method. The bandgap of ZTO thin films varies from 3.30 to 3.44eV with the Zn/Sn ratio from 11 to 1.2, while the optical transmittance of prepared ZTO thin films are beyond 90% in the range of visible spectra, which are suitable for the buffer layer in thin film solar cells. © 2018 The Author(s).

关键词： Buffer layers

来源：评论

学校读者我要写书评

暂无评论

High-efficiency ultra-thin Cu_(2)ZnSnS_(4) solar cells by double-pressure sputtering with spark plasma sintered quaternary target

引用

Journal of Energy Chemistry 2021年第10期30卷 186-194,I0006页

作者： Ping Fan Zhigao Xie Guangxing Liang Muhammad Ishaq Shuo Chen Zhuanghao Zheng Chang Yan Jialiang Huang Xiaojing Hao Yi Zhang Zhenghua Su Shenzhen Key Laboratory of Advanced Thin Films and Applications College of Physics and Optoelectronic EngineeringShenzhen UniversityShenzhen 518060GuangdongChina School of Photovoltaic and Renewable Energy Engineering UNSWSydneyNSW 2052Australia Institute of Photoelectronic Thin Film Devices and Technology and Tianjin Key Laboratory of Thin Film Devices and Technology Nankai UniversityTianjin 300350China

In recent years,Cu_(2)ZnSnS_(4)(CZTS)semiconductor materials have received intensive attention in the field of thin-film solar cells owing to its non-toxic and low-cost *** this work,double-pressure sputtering technology is applied to obtain highly efficient and ultra-thin(-450 nm)pure Cu_(2)ZnSnS_(4)(CZTS)solar *** mixed materials with sulfides and copper powder as a quaternary target via spark plasma sintering(SPS)method and adopting double-layer sputtering(high+low pressure),a highly adhesive and large-grained CZTS thin film is *** a result,the damage to the surface of Mo contact is decreased so that the reflectivity of incident light can be ***,the composition of CZTS film was more uniform and the secondary phase separation at the Mo interface was ***,the interface defect state and deep level defect density in corresponding device with double-pressure is reduced and the ratio of depletion thickness to absorption layer thickness can reached to 0.58,which promoted the collection of photogenerated ***,an efficiency of 9.3%for ultra-thin(~450 nm)CZTS film solar cell is obtained.

关键词： CZTS Ultra-thin Solar cell SPS Sputtering

来源：评论

学校读者我要写书评

暂无评论

On the voltage behavior of quantum dot light-emitting diode

引用

Nano Research 2023年第4期16卷 5511-5516页

作者： Xiangwei Qu Jingrui Ma Pai Liu Kai Wang Xiao Wei Sun Institute of Nanoscience and Applications Southern University of Science and TechnologyShenzhen 518055China Key Laboratory of Energy Conversion and Storage Technologies(Southern University of Science and Technology) Ministry of EducationGuangdong University Key Laboratory for Advanced Quantum Dot Displays and LightingGuangdong-Hong Kong-Macao Joint Laboratory for Photonic-Thermal-Electrical Energy Materials and DevicesShenzhen Key Laboratory for Advanced Quantum Dot Displays and Lightingand Department of Electrical and Electronic EngineeringSouthern University of Science and TechnologyShenzhen 518055China

The origin of the efficiency drop of quantum dot light-emitting diode(QLED)under consecutive voltage sweeps is still a *** this work,we report the voltage sweep behavior of *** observed the efficiency drop of red QLED with ZnMgO electron transport layer(ETL)under consecutive voltage *** contrast,the efficiency increases for ZnO ETL *** analyzing the electrical characteristics of both devices and surface traps of ZnMgO and ZnO nanoparticles,we found the efficiency drop of ZnMgO device is related to the hole leakage mediated by trap state on ZnMgO *** ZnO device,the efficiency raise is due to suppressed electron *** hole leakage also causes rapid lifetime degradation of ZnMgO ***,the efficiency and lifetime degradation of ZnMgO device can be eliminated with shelf *** work reveals the distinct voltage sweep behavior of QLED based on different ETLs and may help to understand the lifetime degradation mechanism in QLED.

关键词： quantum dot light-emitting diode voltage sweep behavior efficiency drop hole leakage current

来源：评论

学校读者我要写书评

暂无评论

Impedance spectroscopy for quantum dot light-emitting diodes

引用

Journal of Semiconductors 2023年第9期44卷 26-38页

作者： Xiangwei Qu Xiaowei Sun Institute of Nanoscience and Applications and Department of Electrical and Electronic EngineeringSouthern University of Science and TechnologyShenzhen 518055China Key Laboratory of Energy Conversion and Storage Technologies(Southern University of Science and Technology) Ministry of Educationand Shenzhen Key Laboratory for Advanced Quantum Dot Displays and LightingSouthern University of Science and TechnologyShenzhen 518055China

Impedance spectroscopy has been increasingly employed in quantum dot light-emitting diodes(QLEDs)to investigate the charge dynamics and device *** this review,we introduce the mathematical basics of impedance spectroscopy that applied to *** particular,we focus on the Nyquist plot,Mott-Schottky analysis,capacitance-frequency and capacitance-voltage characteristics,and the d C/d V measurement of the *** impedance measurements can provide critical information on electrical parameters such as equivalent circuit models,characteristic time constants,charge injection and recombination points,and trap distribution of the ***,this paper will also discuss the disadvantages and limitations of these ***,this review provides a deeper understanding of the device physics of QLEDs through the application of impedance spectroscopy,offering valuable insights into the analysis of performance loss and degradation mechanisms of QLEDs.

关键词： quantum dot light-emitting diode impedance spectroscopy equivalent circuit model charge dynamics

来源：评论

学校读者我要写书评

暂无评论

Multi-Label Active learning Driven by Uncertainty and Inconsistency

Multi-Label Active Learning Driven by Uncertainty and Incons...

引用

International Conference on machine learning and Cybernetics (ICMLC)

作者： Ran Wang Suhe Ye Shenzhen Key Laboratory of Advanced Machine Learning and Applications Shenzhen University Shenzhen China

Multi-label active learning (MLAL) can help learn a highperformance multi-label classifier based on a smaller training set by selecting and labeling high-quality samples iteratively. This paper proposes a new MLAL algorithm by introducing a new concept called inconsistency cardinality. During each learning iteration, the current classifier can produce temporal decision labels for the candidate samples. Then, supporting decision regarding each label can be derived from the conditional features based on the lower approximations in fuzzy rough set theory. The inconsistency cardinality is defined as the disagreement degree between these two sets of decisions, which will be combined with uncertainty to give a more comprehensive evaluation on unlabeled samples. Correspondingly, a new MLAL strategy is proposed. Experimental comparisons show the feasibility and effectiveness of the proposed algorithm.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Anode interfacial modification for non-fullerene polymer solar cells:Recent advances and prospects

引用

InfoMat 2022年第12期4卷 33-73页

作者： Nafees Ahmad Guangxing Liang Ping Fan Huiqiong Zhou Shenzhen Key Laboratory of Advanced Thin Films and Applications Key Laboratory of Optoelectronic Devices and SystemsCollege of Physics and Optoelectronic EngineeringShenzhen UniversityShenzhenPeople's Republic of China CAS Key Laboratory of Nanosystem and Hierarchical Fabrication National Center for Nanoscience and TechnologyBeijingPeople's Republic of China

Recently,the power conversion efficiency(PCE)of single-junction non-fullerene polymer solar cells(NF-PSCs)has surpassed 19%due to the fast development of novel donor polymers,NF-acceptors,device engineering,and interlayer *** anode interlayer(AIL)plays a vital role in improving the efficiency and stability of *** challenges and opportunities in this research area encourage researchers to pursue great innovation in developing new materials and strategies for highly efficient *** review summarizes the recent development of AIL materials and their modification strategies in single-junction ***,a brief introduction,key functions,basic requirements,and peculiar features of AILs when employed in NF-PSCs are ***,the impact of AIL materials(including organic,inorganic,and hybrid materials)on the PCE and the stability of NF-PSCs are ***,the fabrication of large-area devices and related issues are *** summary and the future challenges regarding efficient AIL are summarized in the last section of this review.

关键词： anode interlayer efficiency hole extraction non-fullerene polymer solar cells stability

来源：评论

学校读者我要写书评

暂无评论

Ag@polydopamine-functionalized borate ester-linked chitosan hydrogel integrates monitoring with wound healing for epidermal sensor

引用

npj Flexible Electronics 2024年第1期8卷 43-54页

作者： Wei Shi Hui Li Chengsheng Xu Gaoyi Wu Jing Chen Jinyong Zhang Lixin Liang Qingyang Wu Yongsheng Liang Guanglin Li Wei Tang Key Laboratory of Human-Machine-Intelligence Synergic System Research Center for Neural EngineeringShenzhen Institutes of Advanced TechnologyChinese Academy of SciencesShenzhenGuangdongChina College of Big Data and Internet Shenzhen Technology UniversityShenzhenGuangdongChina

Flexible sensors are promising candidates in personalized healthcare,while desired sensors that allow implantation for biomedical applications with optimal sensing and favorable biological properties remain ***,a multifunctional hydrogel sensor was developed with gallic acid-modified chitosan(CSGA)and 3-carboxyphenylboronic acid-modified chitosan(CSPBA)by encapsulating Agdecorated polydopamine(Ag@PDA)nanoparticles,namely Ag@PDA-(CSPBA/CSGA).The optimized hydrogel sensor showed desired sensitivity(gauge factor=2.49),a rapid response/recovery time of 263 ms and good *** to the presence of abundant reactive groups within Ag@PDA-(CSPBA/CSGA),the hydrogel sensor exhibited a comprehensive performance of self-healing,tissue adhesiveness,antioxidative activity,and antibacterial effects against Escherichia coli(92.76%)and Staphylococcus aureus(98.08%).Moreover,the hydrogel sensor could be utilized as a wound dressing,facilitating accelerated wound closure and tissue *** subtle activities and large-scale movements could be monitored and distinguished by the hydrogel *** study provides a promising epidermal sensor that offers multifunctionality for health monitoring and wound management.

关键词： wound desired durability

来源：评论

学校读者我要写书评

暂无评论

A Novel ECG Signal Classification Algorithm Based on Common and Specific Components Separation 2nd

A Novel ECG Signal Classification Algorithm Based on Common ...

引用

2nd International Conference on Pattern Recognition and Artificial Intelligence, ICPRAI 2020

作者： Huang, Jianfeng Huang, Chao Yang, Lihua Zhang, Qian School of Financial Mathematics and Statistics Guangdong University of Finance Guangzhou China College of Mathematics and Statistics Shenzhen Key Laboratory of Advanced Machine Learning and Applications Shenzhen University Shenzhen China Guangdong Province Key Laboratory of Computational Science School of Mathematics Sun Yat-sen University Guangzhou China

ISBN: (纸本)9783030598297

Electrocardiography (ECG) signal classification is a challenging task since the characteristics of ECG signals vary significantly for different patients. In this paper, we propose a new method for ECG signal classification based on the separation of common and specific components of a signal. The common components are obtained via Canonical Correlation Analysis (CCA). After removing the common components from the signal, we map the specific components to a lower dimensional feature space for classification. We first establish a basic model in the binary classification setting and then extend it to a more general version. Numerical experiments results on the MIT-BIH Arrhythmia Database are presented and discussed. © 2020, Springer Nature Switzerland AG.

关键词： Electrocardiography

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：