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High-performance all-polymer solar cells enabled by a novel low bandgap non-fully conjugated polymer acceptor

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Science China Chemistry 2021年第8期64卷 1380-1388页

作者： Qunping Fan Ruijie Ma Tao Liu Jianwei Yu Yiqun Xiao Wenyan Su Guilong Cai Yuxiang Li Wenhong Peng Tao Guo Zhenghui luo Huiliang Sun Lintao Hou Weiguo Zhu xinhui Lu Feng Gao Ellen Moons Donghong Yu He Yan Ergang Wang Department of Chemistry and Chemical Engineering Chalmers University of TechnologyGöteborgSE-41296Sweden Department of Chemistry and Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration&Reconstruction Hong Kong University of Science and TechnologyKowloonHong Kong999077China Department of Physics Chemistryand Biology(IFM)Linköping UniversityLinköping58183Sweden Department of Physics The Chinese University of Hong KongNew Territories999077Hong KongChina Department of Engineering and Physics Karlstad University65188KarlstadSweden Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communications Siyuan LaboratoryDepartment of PhysicsJinan UniversityGuangzhou510632China School of Materials Science and Engineering Xi’an University of Science and TechnologyXi’an710054China School of Materials Science and Engineering Jiangsu Key Laboratory of Environmentally Friendly Polymeric MaterialsChangzhou UniversityChangzhou213164China Department of Chemistry and Bioscience Aalborg UniversityDK-9220AalborgDenmark Sino-Danish Center for Education and Research AarhusDK-8000Denmark School of Materials Science and Engineering Zhengzhou UniversityZhengzhou450001China

The non-fully conjugated polymer as a new class of acceptor materials has shown some advantages over its small molecular counterpart when used in photoactive layers for all-polymer solar cells(all-PSCs),despite a low power conversion efficiency(PCE)caused by its narrow absorption ***,a novel non-fully conjugated polymer acceptor PFY-2TS with a low bandgap of~1.40 eV was developed,via polymerizing a largeπ-fused small molecule acceptor(SMA)building block(namely YBO)with a non-conjugated thioalkyl *** with its precursor YBO,PFY-2TS retains a similar low bandgap but a higher LUMO ***,compared with the structural analog of YBO-based fully conjugated polymer acceptor PFY-DTC,PFY-2TS shows a similar absorption spectrum and electron mobility,but significantly different molecular crystallinity and aggregation properties,which results in optimal blend morphology with a polymer donor PBDB-T and physical processes of the device in *** a result,PFY-2TS-based all-PSCs achieved a PCE of 12.31%with a small energy loss of 0.56 eV enabled by the reduced non-radiative energy loss(0.24 eV),which is better than that of 11.08%for the PFY-DTC-based *** work clearly demonstrated that non-fully conjugated polymers as a new class of acceptor materials are very promising for the development of high-performance all-PSCs.

关键词： all-polymer solar cells morphology non-fully conjugated polymer acceptors energy loss power conversion efficiency

All-polymer solar cells with over 16%efficiency and enhanced stability enabled by compatible solvent and polymer additives

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Aggregate 2022年第3期3卷 5-12页

作者： Ruijie Ma Jianwei Yu Tao Liu Guangye Zhang Yiqun Xiao Zhenghui luo Gaoda Chai Yuzhong Chen Qunping Fan Wenyan Su Gang Li Ergang Wang xinhui Lu Feng Gao Bo Tang He Yan Department of Chemistry Guangdong-Hong Kong-Macao Joint Laboratory of Optoelectronic and Magnetic Functional MaterialsEnergy Institute and Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and ReconstructionHong Kong University of Science and TechnologyKowloonHong KongChina College of Chemistry Chemical Engineering and Materials ScienceKey Laboratory of Molecular and Nano ProbesMinistry of EducationCollaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of ShandongInstitute of Materials and Clean EnergyShandong Provincial Key Laboratory of Clean Production of Fine ChemicalsShandong Normal UniversityJinanChina Department of Physics Chemistry and Biology(IFM)Linköping UniversityLinköpingSweden College of New Materials and New Energies Shenzhen Technology UniversityShenzhenChina Department of Physics Chinese University of Hong KongNew TerritoriesHong KongChina Department of Chemistry and Chemical Engineering Chalmers University of TechnologyGöteborgSweden Hong Kong University of Science and Technology-Shenzhen Research Institute NanshanShenzhenP.R.China State Key Laboratory of Luminescent Materials and Devices Institute of Polymer Optoelectronic Materials and DevicesSouth China University of Technology(SCUT)GuangzhouP.R.China School of Materials Science and Engineering Zhengzhou UniversityZhengzhouChina Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communications Siyuan LaboratoryDepartment of PhysicsJinan UniversityGuangzhouChina

Considering the robust and stable nature of the active layers,advancing the power conversion efficiency(PCE)has long been the priority for all-polymer solar cells(all-PSCs).Despite the recent surge of PCE,the photovoltaic parameters of the stateof-the-art all-PSC still lag those of the polymer:small molecule-based *** compete with the counterparts,judicious modulation of the morphology and thus the device electrical properties are *** is difficult to improve all the parameters concurrently for the all-PSCs with advanced efficiency,and one increase is typically accompanied by the drop of the other(s).In this work,with the aids of the solvent additive(1-chloronaphthalene)and the n-type polymer additive(N2200),we can fine-tune the morphology of the active layer and demonstrate a 16.04%efficient all-PSC based on the PM6:PY-IT active *** grazing incidence wideangle X-ray scattering measurements show that the shape of the crystallites can be altered,and the reshaped crystallites lead to enhanced and more balanced charge transport,reduced recombination,and suppressed energy loss,which lead to concurrently improved and device efficiency and stability.

关键词： additive all-polymer solar cell energy loss morphology power conversion efficiency

Evaluation of suspected local recurrence in lung cancer and head & neck cancer:A comparison between ^(99m)Tc-HL91 SPECT and CT for biopsy proven lesions

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Nuclear Science and Techniques 2008年第6期19卷 337-342页

作者： SU xinhui SUN Long HUANG Jingxiong CHEN Guibing HE Xiaojiang luo Zuoming PAN Weimin CHEN Qiang WU Hua Department of Nuclear Medicine No. 1 Hospital of Xiamen Affiliated to Fujian Medical University Xiamen 316003 China School of Life Sciences Xiamen University Xiamen 316003 China

CT has rather low accuracy for the follow-up of tumors after therapy. This study was to determine whether the diagnostic accuracy can be improved with 99mTc-HL91 SPECT in comparison with parallel results of CT imaging. Thirty patients of lung cancer or head & neck cancer, suspected of recurrences on clinical symptoms and CT during clinical follow-up after therapy, underwent 99mTc-HL91 SPECT. The radioactivity ratios of tumor to normal tissues (T/NT) were calculated using the region of interest technique. Results of 99mTc-HL91 SPECT were verified by histopathology. The 99mTc-HL91 average uptake ratios of T/NT in the group of recurrent lesions and non-recurrent lesions were 1.58±0.16 and 1.18±0.14, respectively. A significant difference was found between T/NT data of the two phases (t=4.87, P<0.001). The 99mTc-HL91 SPECT shows sensitivity of 72.73%, specificity of 89.47% and accuracy of 83.83% for differentiating recurrent lesion, while the CT shows sensitivity of 63.63%, specificity of 84.21% and accuracy of 76.67%. A combination of 99mTc-HL91 SPECT and CT for 21 patients with lung cancers or head & neck cancers with congruent results shows sensitivity of 100%, specificity of 94.12% and accuracy of 95.23%. It is concluded that 99mTc-HL91 SPECT may play a role in differentiating recurrent lesions in patients with lung cancer and head & neck cancer. Furthermore, the combination of CT and 99mTc-HL91 SPECT is a more effective method for diagnosing recurrence of lung cancer and head & neck cancer.

关键词：肿瘤复发 SPECT ^99mTc-HL91 CT

故障性涌流影响下换流变差动保护的可靠性风险评估

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电网技术 2021年第11期45卷 4490-4497页

作者：郑涛何瑞杨鑫慧国兴超罗美玲新能源电力系统国家重点实验室(华北电力大学) 北京市昌平区102206 国网宁夏电力有限公司宁夏回族自治区银川市750001

交直流混联电网中交直流系统相互耦合使得系统故障特性较为复杂,换流变阀侧发生单相接地故障后,由于换流阀的单向导通性,故障电流偏向于时间轴一侧,可能导致换流变铁芯发生饱和,产生故障性涌流进而使得差动保护的可靠性降低。结合电力... 详细信息

交直流混联电网中交直流系统相互耦合使得系统故障特性较为复杂,换流变阀侧发生单相接地故障后,由于换流阀的单向导通性,故障电流偏向于时间轴一侧,可能导致换流变铁芯发生饱和,产生故障性涌流进而使得差动保护的可靠性降低。结合电力系统风险评估理论,建立了故障性涌流影响下换流变差动保护的可靠性风险评估模型,将综合风险指标定义为故障性涌流发生的概率与故障性涌流对换流变差动保护影响的严重度的乘积。通过对故障性涌流产生机理的深入分析得到不同故障条件下故障性涌流的产生概率,并根据二次谐波含量超过或低于门槛值的时间占比作为换流变差动保护拒动或者误动风险的严重程度指标,根据综合风险指标值划分了不同故障条件下差动保护所处的风险等级,最后通过PSCAD/EMTDC仿真验证了所提出的可靠性风险评估模型的正确性。

关键词：换流变压器故障性涌流风险评估差动保护

Effects of Ionic Surfactants on Bacterial Luciferase and α-Amylase

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Chinese Journal of Chemical Engineering 2009年第5期17卷 829-834页

作者：闫桑田李安郑浩罗明芳邢新会 Department of Chemical Engineering Tsinghua University Beijing 100084 China

In order to study the effects of ionic surfactants on bacterial luciferase,the cationic surfactant dodecyltrimethylammonium biomide (DTAB) and anionic surfactant sodium dodecylsulfate (SDS) were *** comparison with bacterial luciferase,α-amylase was used since these two enzymes have similar electrostatic potential and charged active *** the enzymes were treated with the surfactants,the catalytic properties of bacterial luciferase andα-amylase were assayed,and fluorescence spectroscopy and circular dichroism (CD) were used to analyze the alteration of the protein *** results showed that when the DTAB concentration was low,the cationic surfactant DTAB enhanced the enzymatic activities of bacterial luciferase andα-*** the other hand,the anionic surfactant SDS did not alter the enzymatic *** main interaction of cationic surfactant DTAB and the negatively charged surface of the proteins was the ionic interaction,which could alter the environment for the enzyme to work when the DTAB/enzyme molar ratio was ***,at high cationic surfactant concentration,the ionic interaction and hydrophobic interaction might destroy the secondary and tertiary structures of the proteins,leading to the loss of enzymatic activities.

关键词： luciferase α-amylase ionic surfactant surfactant-enzyme interaction

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双波长偏振控制超表面透镜的设计

西北工业大学学报 2022年第1期40卷 215-221页

作者：罗文峰李新慧吕淑媛贾洁西安邮电大学电子工程学院陕西西安710121

随着现代光学的快速发展,光学元件在光学系统中成为了不可或缺的部分,因此超表面逐渐成为研究热点。超表面是由亚波长散射体阵列组成的纳米结构,由于其结构简单、厚度薄、易于集成、利用率高等优点被广泛应用。在可见光690 nm和近红外光... 详细信息

随着现代光学的快速发展,光学元件在光学系统中成为了不可或缺的部分,因此超表面逐渐成为研究热点。超表面是由亚波长散射体阵列组成的纳米结构,由于其结构简单、厚度薄、易于集成、利用率高等优点被广泛应用。在可见光690 nm和近红外光880 nm处采用传播相位设计了偏振复用的透射型超表面透镜。该超表面透镜将x线偏振光的透镜设计与y线偏振光的透镜设计进行组合,实现了在同一超表面下2种波长不同偏振状态的3种超表面透镜,分别是f_(1)=f_(2)=7000 nm的共轴共焦超表面透镜和f_(1)=f_(2)=7000 nm,x_(d)=±4000 nm的离轴超表面透镜以及f_(1)=7000 nm,f_(2)=10000 nm的共轴不同焦超表面透镜。这3种超表面透镜不仅具有高的数值孔径(0.8),而且半峰全宽接近衍射极限,具有良好的聚焦能力,并且其在空间利用率上也得到了提高。这种紧凑、高数值孔径以及空间利用率高的双波长偏振复用的超表面设计为聚焦透镜的发展提供了有效的解决方法,并且在荧光显微镜、光学成像等中发挥着独特的潜力和优势。

关键词：超表面散射半峰全宽双波长偏振复用

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面向稠密检索的伪相关反馈方法

计算机应用 2023年第4期43卷 1036-1042页

作者：胡文浩罗景涂新辉武汉科技大学计算机科学与技术学院武汉430081 华中师范大学计算机学院武汉430079

伪相关反馈(PRF)机制是一种自动化的查询扩展(QE)技术,它利用原始查询和初次检索中前N篇文档蕴含的信息构建更加准确的查询,从而进一步提高信息检索系统的性能。但是,现有的面向稠密检索的PRF方法由于对文本的截断处理容易造成语义信息... 详细信息

伪相关反馈(PRF)机制是一种自动化的查询扩展(QE)技术,它利用原始查询和初次检索中前N篇文档蕴含的信息构建更加准确的查询,从而进一步提高信息检索系统的性能。但是,现有的面向稠密检索的PRF方法由于对文本的截断处理容易造成语义信息的缺失,而且在检索阶段的空间复杂度较高。针对上述问题,提出了一种基于段落级粒度且适用于长文本稠密检索的PRF方法 Dense-PRF。首先,通过计算语义距离从初次检索的前N篇文档中获得相关段落的向量;其次,对相关段落向量进行平均池化以得到QE项向量;然后,按照权重结合原始查询向量和QE项向量构建新的查询向量;最后,根据新的查询向量得到最终检索结果。在Robust04和WT2G两个经典长文本测试集上将Dense-PRF与基线模型进行了对比实验,相较于模型RepBERT+BM25,Dense-PRF在前20篇文档的准确率和归一化折现累计效益(NDCG)指标上分别提升了1.66、1.32个百分点和2.30、1.91个百分点。实验结果表明Dense-PRF能有效缓解查询与文档词汇不匹配的问题,并提升检索精度。

关键词：伪相关反馈查询扩展信息检索稠密检索长文本

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儿童新型冠状病毒感染安全合理用药专家共识

中国药学杂志 2023年第23期58卷 2193-2200页

作者：李智平陆权刘瀚旻宋红梅张晓波陈志敏王诚艾涛班涛陈星陈艳妮陈德晖蔡栩栩崔京浩董晓艳窦志国付红敏虎亚光何军韩志英华山金彦鲁茜刘建华罗新辉陆小霞罗征秀李嘉丽马金海覃敏史天陆田曼王莹王怀立吴斌向伟闫美兴余露山赵顺英周颖赵昕朱增燕张雪梅张海邻朱晓萍邹映雪张磊张馨欣复旦大学附属儿科医院上海201102 上海交通大学医学院附属儿童医院上海200062 四川大学华西第二医院成都610041 中国医学科学院北京协和医院北京100730 浙江大学医学院附属儿童医院杭州310005 苏州市高新区社会事业局江苏苏州215000 成都市妇女儿童中心医院成都610073 哈尔滨医科大学药学院药理教研室哈尔滨150081 山东第一医科大学附属省立医院济南250021 西安交通大学附属儿童医院西安710003 广州医科大学附属第一医院广州510120 中国医科大学附属盛京医院沈阳110004 苏州大学药学院江苏苏州215123 吉林省金康安医药有限责任公司吉林133700 昆明市儿童医院昆明650034 甘肃省妇幼保健院/甘肃省中心医院甘肃730050 医药先进制造国家工程研究中心上海201203 山西省儿童医院太原30006 安徽省儿童医院合肥230022 哈尔滨医科大学附属第六医院医院哈尔滨150076 徐州医科大学江苏徐州221004 河北省儿童医院石家庄050031 新疆维吾尔自治区儿童医院乌鲁木齐830000 武汉儿童医院武汉重庆医科大学附属儿童医院重庆400014 中山大学广州510275 宁夏医科大学总医院银川750001 广西壮族自治区妇幼保健院广西儿童医院南宁530021 中国科学技术大学附属第一医院(安徽省立医院) 合肥230022 南京儿童医院南京210029 上海交通大学医学院附属上海儿童医学中心上海200127 郑州大学第一附属医院郑州450052 福建医科大学附属第一医院福州350005 海南省妇女儿童医学中心海口570312 青岛大学附属妇女儿童医院山东青岛266034 浙江大学杭州310058 首都医科大学附属北京儿童医院北京100045 北京大学第一医院北京100034 湖南省儿童医院长沙410007 苏州大学附属儿童医院江苏苏州215000 复旦大学药学院上海201203 温州医科大学附属第二医院育英儿童医院浙江温州325027 贵州医科大学附属医院贵阳550004 天津市儿童医院天津300134 安徽医科大学药学院合肥230032 中国科学院上海药物研究所上海201203

新型冠状病毒(以下简称新冠病毒,SARS-CoV-2)自2019年12月以来依然在全球流行。作为一种RNA病毒,新冠病毒在流行期间经历了多次的变异。2020年9月首次在英国发现了阿尔法变异株,随后接连有5个变异株被世界卫生组织(World Health Organiz... 详细信息

新型冠状病毒(以下简称新冠病毒,SARS-CoV-2)自2019年12月以来依然在全球流行。作为一种RNA病毒,新冠病毒在流行期间经历了多次的变异。2020年9月首次在英国发现了阿尔法变异株,随后接连有5个变异株被世界卫生组织(World Health Organization,WHO)列为“需关注的变异株”,其中2021年11月首次在南非确认的奥密克戎变异株,在被发现后迅速传遍全球成为主要流行株,并产生不同亚株。

关键词：安全合理用药冠状病毒感染阿尔法新型冠状病毒专家共识 RNA病毒流行株变异株

三边型兆瓦级波浪能装置锚泊系统动力特性分析

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太阳能学报 2023年第6期44卷 30-38页

作者：黄正聂铭李铭钧段新辉刘小璐罗啸宇广东电网有限责任公司广州510600 广东电网有限责任公司电力科学研究院广州510080 广东省电力装备可靠性企业重点实验室(广东电网有限责任公司电力科学研究院) 广州510080

采用ANSYS-AQWA软件建立三边型兆瓦级波浪能装置及其锚泊系统分析模型,计算正常完整状态和锚泊线断裂1根状态下装置和锚链的动力特性,分析聚酯缆绳的刚度、环境入射角及平台锚链的出链长度对锚泊系统的最小安全系数的影响。结果表明:锚... 详细信息

采用ANSYS-AQWA软件建立三边型兆瓦级波浪能装置及其锚泊系统分析模型,计算正常完整状态和锚泊线断裂1根状态下装置和锚链的动力特性,分析聚酯缆绳的刚度、环境入射角及平台锚链的出链长度对锚泊系统的最小安全系数的影响。结果表明:锚泊系统的最大张力受聚酯缆绳动态刚度的影响显著;当采用锚泊线初始构成方案时,对于部分环境入射角,锚泊系统的最小安全系数不满足规范要求,但通过调整平台锚链的出链长度,使得在正常完整状态和有1根锚泊线断裂状态下均满足相应规范要求。最后,根据计算分析对工程上的布置设计提出建议,从而在保证锚泊系统可靠性的同时提高整体工程的经济性。

关键词：波浪能转换半潜平台水动力学聚酯缆系泊链失效