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Harnessing chemical functions of ionic liquids for perovskite solar cells

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Journal of Energy Chemistry 2022年第5期31卷 797-810页

作者： Fangfang Fan Yalan Zhang Mingwei Hao Feifei Xin zhongmin zhou Yuanyuan zhou College of Chemistry and Molecular Engineering Qingdao University of Science and TechnologyQingdao 266042ShandongChina Department of Physics Hong Kong Baptist UniversityKowloon 999077Hong KongChina Smart Society Laboratory Hong Kong Baptist UniversityKowloon 999077Hong KongChina

The remarkable ramping of record power conversion efficiencies in perovskite solar cells(PSCs) has stimulated the growth of this technology towards commercialization. However, there remain challenges and opportunities for further improving their efficiency and stability. Featuring the variety of functional group in the constituting ions, ionic liquids(ILs) exhibit versatile properties and functions that can be leveraged to the development of improved PSCs. Herein with a systematic review on the recent progress in the application of ILs to PSCs, we show that based on the different roles of ILs in the film and device settings, IL can facilitate the thin-film synthesis of perovskites, improve the properties of chargetransport layers, and ameliorate the interfacial energetics at device interfaces. In particular, the ILsperovskite interactions of two different types(Lewis acid-base interaction and hydrogen bonding) are the essential chemistries underpinning observed efficiency and stability improvements in PSCs, which represent a vast research paradigm in the field of energy chemistry.

关键词： Ionic liquid Chemical interaction Perovskite solar cells Efficiency Stability

ACCEL: an efflcient and privacy-preserving federated logistic regression scheme over vertically partitioned data

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Science China(Information Sciences) 2022年第7期65卷 98-99页

作者： Jiaqi ZHAO Hui ZHU Fengwei WANG Rongxing LU Hui LI zhongmin zhou Haitao WAN State Key Laboratory of Integrated Networks Services Xidian University Faculty of Computer Science University of New Brunswick China Mobile (Suzhou) Software Technology Co. Ltd.

Dear editor,With the age of big data coming, massive data are being generated distributedly all the time and stored as the form of data islands; meanwhile, data privacy and security are strengthened with the introduction of some privacy laws, which thus bring huge challenges to traditional centralized machine learning. Consequently, federated learning(FL) [1], which can construct global machine learning models over multiple participants while keeping their data localized, gains widespread attention and shows its vast prospects in many fields [2]. At each training round of FL, the local updates are calculated locally with participants’ training data,

关键词： vertically federated learning privacy-preserving logistic regression symmetric homomorphic encryption efficiency

p-Type Semiconductor Doping Affords Hole-Transporting-Layer-Free Thin-film Perovskite Solar Cells with High Stability

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p-Type Semiconductor Doping Affords Hole-Transporting-Layer-...

Competency-based Teaching Theory in Solider Post Internship Application in NCO Academy

第六届新型太阳能电池材料科学与技术学术研讨会

作者： zhongmin zhou College of Chemistry and Molecular Engineering Qingdao University of Science and Technology

Poor performance of thin perovskite films arises partly from small crystal grains that tend to suffer from defects at the grain boundaries of small crystals, leading to an inadequate PCE and a short lifetime. Consequently, there is a need for studies on crystal growth and grain size control. Perovskite crystal grains that are tens of nanometers in size are morphologically less stable than large ones. We have now found that doping with a very small amount of an organic/inorganic hybrid p-type organic semiconductor, a bissodium salt of fluorinated tetraarylbenzo[1,2-b:4,5-b￠] dipyrrol-1,5-yl alkanediylbissulfonate(BDPSO), enhances both the efficiency and stability of devices. We report herein that an inverted structure device on an indium tin oxide(ITO)/glass, using a thin MAPbI film doped with 0.03 wt % of BDPSO, does not require a precast hole transporting layer(HTL). It exhibits improved PCE and high device stability. For example, the device on ITO/glass, onto which we directly coated a 280-nm-thick PV film doped with 0.03 wt % of BDPSO showed 30% improvement in PCE(16.9%) over an undoped reference device without a HTL, and it retained 93% of its initial PCE after 1000 h continuous light soaking at the maximum power point(MPP).

关键词： p-Type Semiconductor doping Hole-Transporting-Layer-Free Perovskite Solar Cells stability

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International Journal of Technology Management 2014年第10期 46-47页

作者： Xiaojia Gu zhongmin Liu Zelong zhou Wuhan Mechanical Technology College

Intemship positions are non-commissioned officers serving students with the knowledge and skills learned in school is based, went to a professional army posts counterparts learning and training, in practice, further temper professional skills, familiar with the work force characteristics, to achieve after graduation ＂Zero posts＂ lay a solid foundation, Competency-based education （Competence Based Education, referred CBE） is the main trend of the current vocational education, and non-commissioned officers subordinate to the nature of the military education of vocational education has become a consensus. CBE guide students to use non-commissioned officers to carry out the post office internships can effectively compensate for the lack of current teaching practice and improve the quality of teaching practice.

关键词： CBE NCO Intership Training

ACCEL: an efficient and privacy-preserving federated logistic regression scheme over vertically partitioned data

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Science China(Information Sciences) 2022年

Dear editor,With the age of big data coming, massive data are being generated distributedly all the time and stored as the form of data islands; meanwhile, data privacy and security are strengthened with the introduction of some privacy laws, which thus bring huge challenges to traditional centralized machine learning. Consequently, federated learning(FL)[1], which can construct global machine learning models over multiple participants while keeping their data localized,

关键词：

国家教育考试评分救济手段之纠偏——基于62份裁判文书的分析

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高校教育管理 2020年第3期14卷 49-59页

作者：周钟敏东南大学法学院江苏南京211189

在国家教育考试中,考生申请考试信息公开的目的不是满足信息公开请求权,而是基于对考试评分行为的异议通过复核查卷改变考试评分结果,从而维护其受教育权。但是,通过对62份裁判文书的分析可知,现阶段以信息公开请求权为基础的救济途径... 详细信息

在国家教育考试中,考生申请考试信息公开的目的不是满足信息公开请求权,而是基于对考试评分行为的异议通过复核查卷改变考试评分结果,从而维护其受教育权。但是,通过对62份裁判文书的分析可知,现阶段以信息公开请求权为基础的救济途径并不足以实现考生的诉求,2019年修订后的《中华人民共和国政府信息公开条例》第14条更进一步增强了不予公开的合法性。为此,文章在对卷宗阅览权进行界定的前提下,将信息公开请求权与卷宗阅览权进行比较,从而分析卷宗阅览权在考试评分救济制度中的权利保障优势。在此基础上,文章重新设计以卷宗阅览权为请求权基础的考试评分救济路径,通过认定考试评分行为的可诉性以及确定司法审查的强度和标准,更好地保障考生的受教育权。

关键词：国家教育考试考试评分行为权利救济信息公开请求权卷宗阅览权受教育权

公立高校教师解聘纠纷的司法审查困境及其破解

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安徽大学学报（哲学社会科学版） 2020年第4期44卷 111-117页

作者：周钟敏东南大学法学院东南大学教育部教育立法研究基地江苏南京211189

教师聘任合同是高等教育体制改革过程中用以补充或替代教育行政命令的一种管理教师的方式。公立高校依据《高等教育法》的规定采取教师聘任合同的方式实施教师管理的主要目的是为了履行公共教育职责、实现教育管理目标、维护社会公共利... 详细信息

教师聘任合同是高等教育体制改革过程中用以补充或替代教育行政命令的一种管理教师的方式。公立高校依据《高等教育法》的规定采取教师聘任合同的方式实施教师管理的主要目的是为了履行公共教育职责、实现教育管理目标、维护社会公共利益。但是,在现有的公立高校教师解聘纠纷中,法院适用民事诉讼的制度设计进行司法审查,导致受案范围狭窄、法律适用混乱、程序审查不足以及审查标准模糊等困境的产生。究其原因,与教师聘任合同的性质界定不清以及其具有传统的公权力属性紧密相关。结合行政协议的识别标准,教师聘任合同是高校为了实现公共教育管理目标,与教师签订的具有行政法上权利义务内容的行政协议。据此,在双方因解除聘任合同发生争议时,教师可直接向法院提起行政诉讼。法院宜采取多元化的司法审查标准,保障公共利益和教师合法权益的实现。

关键词：公立高校教师解聘聘任合同行政协议司法审查

Dopant-free organic small molecule hole transport material in inverted perovskite solar cells

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Dopant-free organic small molecule hole transport material i...

Hydrogen-Bonded Dopant-Free Hole Transport Material Enables Efficient and Stable Inverted Perovskite Solar Cells

第七届新型太阳能电池材料科学与技术学术研讨会

作者： Bingyu Li Mingzhe Zhu zhongmin zhou College of Chemistry and Molecular Engineering Qingdao University of Science and Technology

In recent years,the organic-inorganic hybrid perovskite solar cells(PSCs) have gained significant attention because of high power conversion efficiency(PCE) and low production *** comparison with conventional n-i-p PSCs,the inverted p-i-n PSCsexhibit low-hysteresis,high stability,and especially the solution-processible of hole tr ansport materials(HTMs).Up to now,the most-widely utilized HTMs in highly efficient in verted PSCs are NiO and ***,the deposition of NiO on the electrode needs hi gh-temperature(500 ℃) spray,which can lead to operational *** polymer PT AA,however,usually shows batch-to-batch difference,which results in low ***,organic small molecules,which are well-defined chemical structures and solution processible,will be potential HTM ***,we take advantage of naphtho[1,2-b:5,6-’]difuran(NDF) as HTM in inverted PSCs,obtaining PCE of ～15 % with low hysteresis as shown in Fig.1.

关键词： perovskite solar cells hole transport materials organic small molecule

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CCS Chemistry 2022年第9期4卷 3084-3094页

作者： Rui Li Chongwen Li Maning Liu Paola Vivo Meng Zheng Zhicheng Dai Jingbo Zhan Benlin He Haiyan Li Wenjun Yang zhongmin zhou Haichang Zhang Key Laboratory for Rubber-Plastics of Ministry of Education/Shandong Province School of Polymer Science and TechnologyQingdao University of Science and TechnologyQingdao 266042 Institute of Materials Science and Engineering Ocean University of ChinaQingdao 266100 Hybrid Solar Cells Faculty of Engineering and Natural SciencesTampere UniversityFI-33014 Tampere

Although many dopant-free hole transport materials(HTMs)for perovskite solar cells(PSCs)have been investigated in the literature,novel and useful molecular designs for high-performance HTMs are still *** this work,a h... 详细信息

关键词： hydrogen bonding dopant-free hole transport material inverted perovskite solar cell high efficiency stability