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Multidentate anchoring through additive engineering for highly efficient Sb_(2)S_(3)planar thin film solar cells

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Journal of Materials Science & Technology 2021年第30期89卷 36-44页

作者： Jian Han Xingyu Pu Hui Zhou Qi Cao Shuangjie Wang Jiabao Yang junsong zhao Xuanhua Li State Key Laboratory of Solidification Processing Center for Nano Energy MaterialsSchool of Materials Science and EngineeringNorthwestern Polytechnical UniversityXi’an 710072China Northwestern Polytechnical University-Queen Marry University of London(NPU-QMUL)Joint Research Institute of Advanced Materials and Structures(JRI-AMAS)Xi’an 710072China

Sb_(2)S_(3)is a promising candidate for the flexible solar cells or the top subcells in tandem solar cells due to its wide-bandgap,less toxic,acceptable cost and progressive power conversion efficiency(PCE).However,the poor quality and high trap states of Sb_(2)S_(3)films limit the device performance further ***,we adopt a multidentate ionic liquid,tetramethylammonium hexafluorophosphate([TMA][PF_(6)])as a novel additive to address this *** octahedral[PF_(6)]~-contains six different oriented fluorine atoms with the lone pair electrons,which could coordinate with Sb atoms due to the multidentate ***,the high-quality Sb_(2)S_(3)film with low trap states has been ***,the Fermi level of the Sb_(2)S_(3)film has been upshifted,thereby showing an effective charge *** a result,all photovoltaic parameters of the optimized Sb_(2)S_(3)devices are obviously enhanced,boosting the final PCE from 4.43(control device)to 6.83%.Our study about the multidentate anchoring is manifested to be an effective method to enhance the Sb_(2)S_(3)device performance.

关键词： Sb_(2)S_(3) Solar cells Additive engineering Multidentate anchoring Passivation

Surface passivation by multifunctional carbon dots toward highly efficient and stable inverted perovskite solar cells

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Journal of Energy Chemistry 2023年第11期86卷 9-15,I0001页

作者： Qi Cao Yixin Zhang Xingyu Pu junsong zhao Tong Wang Kui Zhang Hui Chen Xilai He Jiabao Yang Cheng Zhang Xuanhua Li State Key Laboratory of Solidification Processing Center for Nano Energy MaterialsSchool of Materials Science and EngineeringNorthwestern Polytechnical UniversityXi'an 710072ShaanxiChina School of Chemistry and Chemical Engineering Anhui University of TechnologyMaanshan 243032AnhuiChina

Interfacial imperfections between the perovskite layer and the electron transport layer(ETL)in perovskite solar cells(PSCs)can lead to performance loss and negatively influence long-term operational ***,we introduce an interface engineering method to modify the interface between perovskite and ETL by using multifunctional carbon dots(CDs).C=O in the CDs can chelate with the uncoordinated Pb2+in the perovskite material,inhibit interfacial recombination,and enhance the performance and stability of *** addition,–OH in CDs forms hydrogen bonds with I-and organic cation in perovskite,inhibiting light-induced I2release and organic cation volatilization,causing irreversible degradation of perovskite films,thereby enhancing the long-term operational stability of ***,we achieve the champion inverted device with an efficiency of 24.02%.The CDs-treated PSCs exhibit high operational stability,and the maximum power point tracking only attenuates by 12.5%after 1000 *** modification engineering supported by multifunctional quantum dots can accelerate the road to stable PSCs.

关键词： Interfacial engineering Carbon dots Non-radiative recombination

Gadolinium-incorporated CsPbI_(2)Br for boosting efficiency and long-term stability of all-inorganic perovskite solar cells

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Journal of Energy Chemistry 2022年第7期31卷 9-17,I0001页

作者： Xingyu Pu Jiabao Yang Tong Wang Shuaici Cheng Qi Cao junsong zhao Hui Chen Yixin Zhang Tingting Xu Ilhom Tojiboyev Hadi Salari Xuanhua Li State Key Laboratory of Solidification Processing Center for Nano Energy MaterialsSchool of Materials Science and EngineeringNorthwestern Polytechnical UniversityXian710072.ShaanxiChina Queen Mary University of London Engineering School Northwestern Polytechnical UniversityXi’an 710129ShaanxiChina School of Chemistry and Chemical Engineering Northwestern Polytechnical UniversityXi’an 710129ShaanxiChina Institute Ion-Plasma and Laser Technologies Uzbekistan Academy of Sciences100125Durmon yuli 33TashkentUzbekistan Faculty of Physical Chemistry Shiraz UniversityShiraz 71345Iran

All-inorganic CsPbI_(2)Br perovskite solar cells(PSCs)have received extensive research interests ***,their low efficiency and poor long-term stability are still obstacles for further commercial ***,we demonstrate that high efficiency and exceptional long-term stability are realized by incorporating gadolinium(III)chloride(GdCl_(3))into the CsPbI_(2)Br perovskite *** incorporation of GdCl_(3) enhances the Goldschmidt tolerance factor of CsPbI_(2)Br perovskite,yielding a dense perovskite film with small grains,thus the a-phase CsPbI_(2)Br is remarkably ***,it is found that the GdCl_(3)-incorporated perovskite film achieves suppressed charge recombination and appropriate energy level alignment compared with the pristine CsPbI_(2)Br *** noticeable increment in efficiency from14.01%(control PSC)to 16.24%is achieved for GdCl_(3)-incorporated ***,the nonencapsulated GdCl_(3)-incorporated PSC exhibits excellent environmental and thermal stability,remaining over 91%or90%of the original efficiency after 1200 h aging at 40%relative humidity or 480 h heating at 85℃ in nitrogen glove box *** encapsulated GdCl_(3)-incorporated PSC presents an improved operational stability with over 88%of initial efficiency under maximum power point(MPP)tracking at 45℃ for1000 *** work presents an effective ion-incorporation approach for boosting efficiency and long-term stability of all-inorganic PSCs.

关键词： All-inorganic perovskite CsPbI_(2)Br Gadolinium incorporation Power conversion efficiency Long-term stability

Research on the Reform of Funds Management of Scientific Research Projects in the Central Finance of Colleges and Universities in the New Era

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Research on the Reform of Funds Management of Scientific Res...

Characterization of the gut microbiota in six geographical populations of Macaca mulatta

作者： Mei Zhang Guangyang Xu junsong zhao Yingzhen Zheng zhaotong University

In the new era, universities are the main force of scientific and technological innovation, the energy pool of scientific and technological innovation, and undertake the important mission of national scientific and technological innovation. The central government's investment in scientific research projects in colleges and universities is increasing, the financial research projects and funding funds obtained from various channels are increasing, the difficulty of scientific research funds management is increasing, and the problems in the management and use of scientific research projects are becoming more and more prominent. According to a series of new financial and scientific research project funds management policies of China, aiming at the new situation faced by the management of scientific research funds in colleges and universities, this paper analyses the problems existing in the management of scientific research funds in colleges and universities, puts forward the reform and innovation of the use and management mode of scientific research project funds in colleges and universities, forms a dynamic financial management system, and stimulates scientific research personnel. The enthusiasm of scientific research and technological innovation should create a clean and healthy environment for scientific research, improve the ability of scientific research management and promote the development of scientific research and technological innovation in colleges and universities.

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Characterization of the gut microbiota in six geographical p...

第十三届全国野生动物生态与资源保护学术研讨会暨第六届中国西部动物学学术研讨会

作者： junsong zhao Yongfang Yao Qingyong Ni Mingwang Zhang Huailiang Xu College of Life Sciences Sichuan Agricultural University College of Animal Science and Technology Sichuan Agricultural University

Knowledge about the impact of different geographic environments on rhesus macaque gut microbiota is *** this study,we compared the characteristics of gut microbiota in six different geographical rhesus macaque *** the...

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基于事件字典的行人异常事件检测

电视技术 2017年第7期41卷 164-169,185页

作者：赵俊松武建亮刘依中国民航大学信息网络中心天津300300 中国电子科技集团公司第五十四研究所河北石家庄050081 河北工业大学电子信息工程学院天津300401 河北工业大学计算机科学与软件学院天津300401

近年来极端行为和暴恐行为严重威胁着公共安全,行人异常事件检测已成为研究的热点问题。为了克服传统方法中对异常事件定义的模糊性、对行人异常行为特征的描述不够准确的缺点,提出一种基于事件字典的行人异常事件检测方法。本文方法的... 详细信息

近年来极端行为和暴恐行为严重威胁着公共安全,行人异常事件检测已成为研究的热点问题。为了克服传统方法中对异常事件定义的模糊性、对行人异常行为特征的描述不够准确的缺点,提出一种基于事件字典的行人异常事件检测方法。本文方法的创新之处是构造了一种行人特征描述子,能够有效描述行人的身体各部分的变化规律,利用行人特征描述子提取样本的特征进行聚类分析,构建事件字典,预测事件的类别。在标准数据集BEHAVE Interactions Test Case Scenarios、UMN、UCSD上与LDA(Latent Dirichlet Allocation,潜在狄利克雷分布)和双稀疏字典的对比实验表明,该方法对于异常行为的检测准确有较高的检测准确率。

关键词：行人异常事件检测行人特征描述子前景提取聚类事件字典

激光平面度检测技术在高速动车组安装中的应用

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铁道机车车辆 2015年第3期35卷 115-119页

作者：赵峻松广东南车轨道交通车辆有限公司技术部广东新会529000

根据CRH6动车组车下设备的安装技术条件要求,引入车下设备安装座激光平面度检测技术,可以快速而准确的掌握车下设备各个安装座平面度误差,保证安装质量,提高安装效率。

关键词：高速动车平面度误差激光检测

Dissipative soliton resonance within different dispersion regimes in a single mode-locked laser

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Chinese Physics B 2024年第7期33卷 368-372页

作者：赵哲韬舒沁珂解梓怡任俞宣张颖袁博赵春勃彭俊松曾和平 State Key Laboratory of Precision Spectroscopy East China Normal UniversityShanghai 200062China China Academy of Space Technology Xi'an 710100China Collaborative Innovation Center of Extreme Optics Shanxi UniversityTaiyuan 030006China Chongqing Key Laboratory of Precision Optics Chongqing Institute of East China Normal UniversityChongqing 401120China Chongqing Institute for Brain and Intelligence Guangyang Bay LaboratoryChongqing 400064China

Dissipative soliton resonance(DSR) was previously studied in separated mode-locked fiber lasers within different dispersion regimes including anomalous, near-zero and normal dispersion. Here we propose a method to study DSR in a single mode-locked laser in these different dispersion regimes. This is achieved by virtue of a waveshaper which can control the laser dispersion readily using software, avoiding the usual tedious cutback method. We find that dispersion has a negligible effect on DSR since the pulse duration keeps constant while dispersion is varied. Moreover, we examine the dynamics of DSR on the parameters of the SA including modulation depth and saturation power, and find that the pulse duration can be changed in a large range when the saturation power is decreased. Our numerical simulations could be important to guide relative experimental studies.

关键词： mode locking laser fiber pulse

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人工苗圃鹭类繁殖集群研究

野生动物学报 2017年第4期38卷 610-616页

作者：韦定菊赵俊松李波姚永芳四川农业大学动物科技学院成都611130 四川农业大学生命科学院雅安625014

2014年4~6月,采用直接观察法对广汉市南丰镇双庙子村村头的一块人工苗圃内繁殖的4种鹭科鸟类(简称鹭类)(牛背鹭Bubulcus ibis,白鹭Egretta garzetta,池鹭Ardeola bacchus,夜鹭Nycticorax nycticorax)的繁殖集群进行了监测,对鹭类鸟巢的... 详细信息

2014年4~6月,采用直接观察法对广汉市南丰镇双庙子村村头的一块人工苗圃内繁殖的4种鹭科鸟类(简称鹭类)(牛背鹭Bubulcus ibis,白鹭Egretta garzetta,池鹭Ardeola bacchus,夜鹭Nycticorax nycticorax)的繁殖集群进行了监测,对鹭类鸟巢的分布密度、种群结构以及鹭类鸟巢的垂直分布和鸟巢大小进行了系统研究与分析。据统计,该苗圃有鹭类鸟巢1 580个,其中牛背鹭类巢(653,41.31%)为最多,高巢位的是夜鹭类巢。树木的高度和林木郁闭度是影响鹭类巢址选择的主要因素,而林地面积对鹭类巢址的选择影响不明显。影响鹭类巢穴大小的主要因素是鹭类本身体型、树木高度和在巢穴中的居住时间,但鸟巢中新增的幼鸟数量对巢穴大小无影响。

关键词：广汉人工苗圃鹭类繁殖集群