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Improving the Performance of PbS Quantum Dot Solar Cells by Optimizing ZnO Window Layer

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Nano-Micro Letters 2017年第2期9卷 156-165页

作者： Xiaokun Yang Long Hu Hui Deng keke qiao Chao Hu Zhiyong Liu Shengjie Yuan Jahangeer Khan Dengbing Li Jiang Tang Haisheng Song Chun Cheng Wuhan National Laboratory for Optoelectronics(WNLO)and School of Optical and Electronic Information Huazhong University of Science and TechnologyWuhan 430074People’s Republic of China State Key Laboratory of Digital Manufacturing Equipment and Technology Huazhong University of Science and TechnologyWuhan 430074People’s Republic of China Department of Materials Science and Engineering and Shenzhen Key Laboratory of Nanoimprint Technology South University of Science and TechnologyShenzhen 518055People’s Republic of China

Comparing with hot researches in absorber layer,window layer has attracted less attention in PbS quantum dot solar cells(QD SCs). Actually, the window layer plays a key role in exciton separation, charge drifting, and so ***, ZnO window layer was systematically investigated for its roles in QD SCs performance. The physical mechanism of improved performance was also explored. It was found that the optimized ZnO films with appropriate thickness and doping concentration can balance the optical and electrical properties, and its energy band align well with the absorber layer for efficient charge extraction. Further characterizations demonstrated that the window layer optimization can help to reduce the surface defects, improve the heterojunction quality, as well as extend the depletion width. Compared with the control devices, the optimized devices have obtained an efficiency of 6.7% with an enhanced V_(oc) of 18%, J_(sc) of 21%, FF of 10%, and power conversion efficiency of 58%. The present work suggests a useful strategy to improve the device performance by optimizing the window layer besides the absorber layer.

关键词： ZnO Window layer Thin film solar cells PbS quantum dots Physical mechanism

Growth, Patterning and Alignment of Organolead Iodide Perovskite Nanowires for Optoelectronic devices

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Growth, Patterning and Alignment of Organolead Iodide Perovs...

防城港红树林湿地沉积物重金属分布特征及生态风险评价

第二届新型太阳能电池学术研讨会

作者： Hui Deng Dongdong Dong keke qiao Xiaokun Yang Haisheng Song Wuhan National Laboratory for Optoelectronics (WNLO) and School of Optical and Electronic Information Huazhong University of Sciences and Technology

Organolead halide perovskites are becoming intriguing materials applied in optoelectronics. In the present work, organolead iodide perovskite(OIP) nanowires(NWs) have been fabricated by a one step self-assembly method. The controllable NW distributions were implemented by a series of facile techniques: monolayer and small diameter NWs were prepared by precursor concentration tuning;NW patterning was achieved via selected area treatment assisted by a mask;NW alignment was implemented by modified evaporation-induced self-assembly(EISA). The synthesized multifunctional NWs were further applied in photodetectors(PDs) and solar cells as application demos. The PD-performances have reached 1.32 AW 1 for responsivity, 2.5 × 10 Jones for detectivity and 0.3 ms for response speed, superior to OIP films and other typical inorganic NW based PD performances. An energy conversion efficiency of .5% has been obtained for NW film based solar cells. The facile fabrication process, controllable distribution and optoelectronic applications make the OIP NWs promising building blocks for future optoelectronics, especially for low dimensional devices.

关键词： perovskite nanowires evaporation-induced self-assembly controllable distribution optoelectronics

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广东海洋大学学报 2024年第2期44卷 69-75页

作者：庞国涛杨源祯罗钧升曲正顺刘轲轲乔雁于顺航倪怀建中国地质调查局烟台海岸带地质调查中心自然资源部黄河入海口陆海交互作用野外科学观测研究站山东烟台264000

【目的】了解防城港红树林沉积物中重金属的污染水平,评估潜在生态风险程度并对重金属来源进行解析,为红树林湿地保护和预防污染提供参考。【方法】通过测定研究区沉积物重金属含量,分析重金属含量水平。运用地累计指数法、污染负荷指... 详细信息

【目的】了解防城港红树林沉积物中重金属的污染水平,评估潜在生态风险程度并对重金属来源进行解析,为红树林湿地保护和预防污染提供参考。【方法】通过测定研究区沉积物重金属含量,分析重金属含量水平。运用地累计指数法、污染负荷指数法评价重金属污染程度,运用潜在生态风险指数法综合评价重金属潜在生态风险,并应用PCA-MLR模型对重金属进行定量溯源。【结果与结论】研究区红树林沉积物中Cu、Pb、Zn、Cd、As和Hg的质量分数均值分别为20.40、18.50、52.20、0.09、11.95和0.036μg·g^(-1),与国内其他典型红树林分布区对比,研究区红树林湿地重金属含量处于相对较低水平;污染评价表明大部分站位均存在轻微及以上程度的污染,且污染站位多分布在人类活动相对密集的区域;引起潜在生态危害的元素主要为Cd和Hg;Zn、Cd和Pb主要来源于工业和农业源的污水排放,As和Hg主要来源于海水养殖业,Cu主要来源于船舶运输业,3种来源的相对贡献率分别为46.25%、27.09%和26.66%。

关键词：红树林沉积物重金属生态风险源解析

A Localization Method of High Energy Transients for All-sky Gamma-ray Monitor

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Research in Astronomy and Astrophysics 2024年第10期24卷 25-35页

作者： Yi Zhao Wangchen Xue Shaolin Xiong Qi Luo Yuanhao Wang Jiacong Liu Heng Yu Xiaoyun Zhao Yue Huang Jinyuan Liao Jianchao Sun Xiaobo Li Qibin Yi Ce Cai Shuo Xiao Shenglun Xie Chao Zheng Yanqiu Zhang Chenwei Wang Wenjun Tan Zhiwei Guo Chaoyang Li Zhenghua An Gang Chen Yanqi Du Min Gao Ke Gong Dongya Guo Jiang He Jianjian He Bing Li Gang Li Xinqiao Li Jing Liang Xiaohua Liang Yaqing Liu Xiang Ma Rui qiao Liming Song Xinying Song Xilei Sun Jin Wang Ping Wang Xiangyang Wen Hong Wu Yanbing Xu Sheng Yang Dali Zhang Fan Zhang Hongmei Zhang Peng Zhang Shu Zhang Zhen Zhang Shijie Zheng keke Zhang Xingbo Han Haiyan Wu Hu Tai Hao Geng Gaopeng Lu Wei Xu Fanchao Lyu Hongbo Zhang Fangjun Lu Shuangnan Zhang Department of Astronomy Beijing Normal UniversityBeijing 100875China Key Laboratory of Particle Astrophysics Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China University of Chinese Academy of Sciences Beijing 100049China School of Physics and Optoelectronics Xiangtan UniversityXiangtan 411105China College of Physics Hebei Normal UniversityShijiazhuang 050024China Guizhou Provincial Key Laboratory of Radio Astronomy and Data Processing Guizhou Normal UniversityGuiyang 550001China School of Physics and Electronic Science Guizhou Normal UniversityGuiyang 550001China Institute of Astrophysics Central China Normal UniversityWuhan 430079China College of physics Sciences Technology Hebei UniversityBaoding 071002China Physics and Space Science College China West Normal UniversityNanchong 637002China School of Computing and Artificial Intelligence Southwest Jiaotong UniversityChengdu 611756China College of Electronic and information Engineering Tongji UniversityShanghai 201804China Innovation Academy for Microsatellites of Chinese Academy of Sciences Shanghai 201304China National Space Science Center Chinese Academy of SciencesBeijing 100190China School of Earth and Space Sciences University of Science and Technology of ChinaHefei 230026China Electronic Information School Wuhan UniversityWuhan 430072China Key Laboratory of Transportation Meteorology of China Meteorological Administration Nanjing Joint Institute for Atmospheric SciencesNanjing 210000China Key Laboratory of Middle Atmosphere and Global Environment Observation Institute of Atmospheric PhysicsChinese Academy of SciencesBeijing 100029China

Fast and reliable localization of high-energy transients is crucial for characterizing the burst properties and guiding the follow-up *** based on the relative counts of different detectors has been widely used for all-sky gamma-ray *** are two major methods for this count distribution localization:χ^(2)minimization method and the Bayesian *** we propose a modified Bayesian method that could take advantage of both the accuracy of the Bayesian method and the simplicity of the χ^(2)*** comprehensive simulations,we find that our Bayesian method with Poisson likelihood is generally more applicable for various bursts than the χ^(2)method,especially for weak *** further proposed a location-spectrum iteration approach based on the Bayesian inference,which could alleviate the problems caused by the spectral difference between the burst and location *** method is very suitable for scenarios with limited computation resources or timesensitive applications,such as in-flight localization software,and low-latency localization for rapidly follow-up observations.

关键词： methods:data analysis methods:analytical (stars:)gamma-ray burst:general

A Tensorflow Based Feature Learning Method Application in Fault Detecting of Tract Motor

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A Tensorflow Based Feature Learning Method Application in Fa...

Essential roles of exosome and circRNA_101093 on ferroptosis desensitization in lung adenocarcinoma

第30届中国控制与决策会议

作者： Wang Huizhong qiao Linhan He keke Lanzhou University of Technology

In purpose of detecting the inner and outer ring faults of tractor motor,one Feature Learning method,Variationa AutoEncoder,which based on Tensorflow,was cited to process the motor vibration *** method firstly normalized all data sets Next,these data sets were input into the built Variational AutoEncoder model to train the weights and biases as the feature learning is going ***,a Softmax Regression model is used for multi-faults *** final results showed that this method can be used fo finishing multi-faults detecting missions excellently,and for every metric,the results are betterthan traditional Back Propagation Neura Network,from 87.51% to 93.61%.Hence,this unsupervised feature learning method decreased lots of Machine learning model’s dependency on feature *** would be a good guidance of actual projects.

关键词： Tensorflow Variational AutoEncoder Softmax Regression Feature Learning Fault Detection

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Cancer Communications 2022年第4期42卷 287-313页

作者： Xiao Zhang Yunhua Xu Lifang Ma keke Yu Yongjie Niu Xin Xu Yi Shi Susu Guo Xiangfei Xue Yikun Wang Shiyu Qiu Jiangtao Cui Hong Wang Xiaoting Tian Yayou Miao Fanyu Meng Yongxia qiao Yongchun Yu Jiayi Wang Department of Laboratory Medicine Shanghai Chest HospitalShanghai Jiao Tong University School of MedicineShanghai 200030P.R.China Department of Thoracic Surgery Shanghai Chest HospitalShanghai Jiao Tong University School of MedicineShanghai 200030P.R.China Shanghai Institute of Thoracic Oncology Shanghai Chest HospitalShanghai Jiao Tong University School of MedicineShanghai 200030P.R.China Shanghai Lung Cancer Center Shanghai Chest HospitalShanghai Jiao Tong University School of MedicineShanghai 200030P.R.China Department of Bio-bank Shanghai Chest HospitalShanghai Jiao Tong University School of MedicineShanghai 200030P.R.China Shanghai Municipal Hospital of Traditional Chinese Medicine Shanghai University of Traditional Chinese MedicineShanghai 200071P.R.China Bio-X Institutes Key Laboratory for the Genetics of Developmental and Neuropsychiatric disorderShanghai Jiao Tong UniversityShanghai 200030P.R.China Department of Clinical Laboratory Medicine Shanghai Tenth People’s Hospital of Tongji UniversityShanghai 200072P.R.China School of Public Health Shanghai Jiao Tong University School of MedicineShanghai 200025P.R.China

Background:Resistance to ferroptosis,a regulated cell death caused by irondependent excessive accumulation of lipid peroxides,has recently been linked to lung adenocarcinoma(LUAD).Intracellular antioxidant systems are required for protection against *** purpose of the present studywas to investigate whether and how extracellular system desensitizes LUAD cells to ***:Established human lung fibroblasts MRC-5,WI38,and human LUAD H1650,PC9,H1975,H358,A549,and H1299 cell lines,tumor and matched normal adjacent tissues of LUAD,and plasma from healthy individuals and LUAD patients were used in this *** and immunoblotting were used to analyze protein expression,and quantitative reverse transcription-PCR was used to analyze mRNA *** viability,cell death,and the lipid reactive oxygen species generationwere measured to evaluate the responses to *** were observed using transmission electron *** localization of arachidonic acid(AA)was detected using click chemistry labeling followed by confocal *** between RNAs and proteins were detected using RNA pull-down,RNA immunoprecipitation and photoactivatable ribonucleoside-enhanced crosslinking and immunoprecipitation *** analysis was used to investigate RNA-regulated proteins,and metabolomic analysis was performed to analyze *** xenograft,patient-derived xenograft,cell-implanted intrapulmonary LUAD mouse models and plasma/tissue specimens from LUAD patients were used to validate the molecular ***:Plasma exosome from LUAD patients specifically reduced lipid peroxidation and desensitized LUAD cells to ferroptosis.A potential explanation is that exosomal circRNA_101093(cir93)maintained an elevation in intracellular cir93 in LUAD to modulate AA,a poly-unsaturated fatty acid critical for ferroptosisassociated increased peroxidation in the plasma ***,cir93 interac

关键词： exosome circRNA_101093 ferroptosis desensitization lung adenocarcinoma lipid peroxidation poly-unsaturated fatty acid taurine N-arachidonoyl taurine RNA-protein interaction

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北京地区表观健康成人血脂水平的调查

中华检验医学杂志 2016年第1期39卷 34-39页

作者：杨硕乔蕊贾珂珂张捷北京大学第三医院检验科 100191

目的调查北京地区表观健康成人血脂水平的性别和年龄分布特征并分析其相关危险因素。方法前瞻性研究。从北京大学第三医院体检中心招募健康志愿者1712人，年龄18～79岁，通过严格的排除标准获得参考人群951名（男429名，女522名），用... 详细信息

目的调查北京地区表观健康成人血脂水平的性别和年龄分布特征并分析其相关危险因素。方法前瞻性研究。从北京大学第三医院体检中心招募健康志愿者1712人，年龄18～79岁，通过严格的排除标准获得参考人群951名（男429名，女522名），用全自动生化分析仪检测血清TC、TG、HDL—C、LDL-C、ApoA1和ApoB的浓度，将检测结果按性别、年龄及各种危险因素分组后进行统计分析。正态分布资料的两组数据比较用t检验，多组间数据比较采用方差分析。结果女性TC（t：4．013，P〈0．05）、HDL．C（t=9．162，P〈0．05）、ApoA1（t=8．225，P〈0．05）水平高于男性，而男性TG水平显著高于女性（Z=3．119，P〈0．05）。随年龄增长，TC（F=47．984，P〈0．05）、TG（秩和=146．616，P〈0．05）、LDL-C（F=46．024，P〈0．05）、non—HDL—C（F=45．027，P〈0．05）和ApoB（F：52．020，P〈0．05）有增加趋势，且60—69岁年龄组达高峰，70～79岁有所下降。本科以下学历组ApoB（t=5．989，P〈0．05）、LDL—C（t=4．445，P〈0．05）、TC（t=2．885，P〈0．05）、non—HDL—c（t=4．332，P〈0．05）、TG（Z=3．346，P〈0．05）水平均高于本科及以上学历组；城市人群TC（t=8．273，P〈0．05）、HDL—C（t=3．346，P〈0．05）、LDL—C（t=5．768，P〈0．05）、non—HDL—C（t：7．213，P〈0．05）、ApoA1（t=3．683，P〈0．05）、ApoB（t=6．267，P〈0．05）、TG（Z=5．626，P〈0．05）水平均高于农村人群；脑力劳动者ApoA1（t=3．238，P〈0．05）、HDL—C（t=6．011，P〈0．05）、TC（t=2．712，P〈0．05）浓度高于体力劳动者，差异有统计学意义。BMI和腰围分别与TG（L=0．379、0．443，P〈0．01）、TC（rs=0．160、0．176，P〈0．01）、LDL—C（rs=0．238、0．263，P〈0．01）和ApoB（rs=0．326、0．371，P〈0．01）、non—HDL—C（rs=0.304、0．336，P〈0．01）呈正相关，与HDL—c（rs=～0．358、-0．386，P〈0．01）和ApoA1（rs=-0．203、-0．209，P〈0．01）负相关，相关具有统计学意义。结论本研究获得了北京地区表观健康成人血脂水平的分布情况，为临床评估ASCVD的风险性，指导临床医师选择最佳的个体化治疗方案提供了客观依据。

关键词：血脂异常胆固醇 LDL 饮食习惯生活方式健康调查

近红外光谱技术无损检测克咳片中麻黄类生物碱和吗啡含量研究

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分析测试学报 2024年第4期43卷 637-642页

作者：孙鹏向超群陈启文贾彬李欣怡陈炜璇乔卫林肖雪中山市中智药业集团有限公司广东中山528437 山东中医药大学中医药创新研究院山东济南250355 广东药科大学广东省代谢病中西医结合研究中心(中医药研究所) 广东广州510006 广州中医药大学第二附属医院广东广州510006

麻黄类生物碱以及吗啡含量对评价克咳片质量具有重要意义,该文基于近红外光谱(NIRS)技术建立了快速、无损、高效的克咳片质量评价方法,采用NIRS和偏最小二乘回归(PLSR)法建立了麻黄类生物碱以及吗啡的定量分析模型,并采用不同预处理方... 详细信息

麻黄类生物碱以及吗啡含量对评价克咳片质量具有重要意义,该文基于近红外光谱(NIRS)技术建立了快速、无损、高效的克咳片质量评价方法,采用NIRS和偏最小二乘回归(PLSR)法建立了麻黄类生物碱以及吗啡的定量分析模型,并采用不同预处理方法和不同变量选择方法优化了模型性能。将校正集决定系数(R_(c)^(2))、验证集决定系数(R_(p)^(2))和相对分析误差(RPD)作为模型的评价指标。结果表明,标准正态变量变换(SNV)预处理方法结合竞争自适应重加权采样(CARS)变量选择方法所建立的模型性能最优。克咳片中麻黄类生物碱及吗啡近红外光谱模型的R_(c)^(2)、R_(p)^(2)及RPD分别为0.91、0.93、4.00和0.92、0.94、4.24,说明模型性能较好。该研究基于NIRS和CARS实现了克咳片指标成分的快速、无损分析,为克咳片的质量快检提供了参考。

关键词：克咳片近红外光谱麻黄类生物碱吗啡

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理解中国的贸易顺差:一个政治经济学的视角

当代经济研究 2019年第12期 5-21,F0002,F0003页

作者：乔晓楠冯志轩张坷坷南开大学经济学院天津300071 南开大学中国特色社会主义经济建设协同创新中心天津300071

马克思主义政治经济学认为商品之间交换量的关系或比例由其各自所包含的价值量所决定,因此,国际贸易的本质就是劳动的跨国交换。并且,在进行国际贸易时,商品的价值标准也随之发生了变化。这其中包含着两重偏离,即国别价值与国际价值的偏... 详细信息

马克思主义政治经济学认为商品之间交换量的关系或比例由其各自所包含的价值量所决定,因此,国际贸易的本质就是劳动的跨国交换。并且,在进行国际贸易时,商品的价值标准也随之发生了变化。这其中包含着两重偏离,即国别价值与国际价值的偏离,以及国际价值与国际生产价格的偏离。前者反映了生产效率的差异,后者则刻画了国际价值转移。基于上述理论,运用世界投入产出表分析中国27个生产性部门1995~2009年贸易顺差的两重偏离情况,研究发现,中国实现特定贸易顺差所消耗的国别劳动时间始终高于世界必要劳动时间,但是其差距在显著缩小,生产效率大幅提升,并且由于贸易结构的变化,中国的价值转出情况也得到了大幅改善。

关键词：贸易顺差国别价值国际价值国际生产价格