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Oriented Organization of Poly(3-Hexylthiophene)for Efficient and Stable Antimony Sulfide Solar Cells

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Energy & Environmental Materials 2023年第6期6卷 312-317页

作者： Jinxiang Gao rongfeng Tang Huiling cai Zhiyuan cai Peng Xiao Gang Li Chenhui Jiang Changfei Zhu Tao Chen CAS Key Laboratory of Materials for Energy Conversion Department of Materials Science and EngineeringSchool of Chemistry and Materials ScienceUniversity of Science and Technology of ChinaHefei 230041China Institute of Energy Hefei Comprehensive National Science CenterHefei 230041China

Poly(3-hexylthiophene)(P3HT),as a traditional organic hole-transporting material(HTM),is widely used in thin-film solar cells due to its high charge mobility and good thermal stability.However,the P3HT films obtained by the traditional method are amorphous,which is unfavorable to hole extraction and transport.Here,a low-toxicity solvent 1,2,4-trimethylbenzene(TMB)was used as the solvent instead of the commonly used halogen solvent chlorobenzene(CB)to dissolve P3HT.Thus,the self-assembled nanofibrous P3HT film was prepared and applied as HTM in the newly emerged Sb_(2)S_(3)solar cells.According to the density functional theory calculations,the interface contact between TMB-P3HT and Sb_(2)S_(3)was enhanced via the bonding interaction of S in P3HT and Sb in Sb_(2)S_(3).Through transient absorption spectroscopy characterization,the enhanced interface contact improves the charge extraction ability of TMB-P3HT when compared to the CB-P3HT film.Thus,the TMB-P3HT-based Sb_(2)S_(3)solar cell delivers a power conversion efficiency of 6.21%,which is 9.7%higher than that of the CB-P3HT-based device.Furthermore,the dopant-free TMB-P3HT-based Sb_(2)S_(3)devices exhibit excellent environmental stability compared with Spiro-OMeTAD-based devices.This work demonstrates that the application of P3HT and the solvent engineering of HTM are applicable strategies for developing Sb_(2)S_(3)solar cells with high efficiency and stability.

关键词： green solvent P3HT Sb_(2)S_(3) self-assembled nanofibrous solar cell

High auxin stimulates callus through SDG8-mediated histone H3K36 methylation in Arabidopsis

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Journal of Integrative Plant Biology 2022年第12期64卷 2425-2437页

作者： Jun Ma Qiang Li Lei Zhang Sen cai Yuanyuan Liu Juncheng Lin rongfeng Huang Yongqiang Yu Mingzhang Wen Tongda Xu College of Life Sciences Fujian Agriculture and Forestry UniversityFuzhou 350002China Plant Synthetic Biology Center FAFU-UCR Joint Center for Horticultural Biology and MetabolomicsHaixia Institute of Science and TechnologyFujian Agriculture and Forestry UniversityFuzhou 350002China Shanghai Center for Plant Stress Biology CAS Center for Excellence in Molecular Plant SciencesChinese Academy of SciencesShanghai 201602China Basic Forestry and Proteomics Research Center Haixia Institute of Science and TechnologyFujian Agricuture and Forestry UniversityFuzhou 350002China Frontiers Science Center for Synthetic Biology(Ministry of Education) Tianin UniversityTianjin 300072China

Callus induction,which results in fate transition in plant cells,is considered as the first and key step for plant regeneration.This process can be stimulated in different tissues by a callus-inducing medium(CIM),which contains a high concentration of phytohormone auxin.Although a few key regulators for callus induction have been identified,the multiple aspects of the regulatory mechanism driven by high levels of auxin still need further investigation.Here,we find that high auxin induces callus through a H3 K36 histone methylation-dependent mechanism,which requires the methyltransferase SET DOMAIN GROUP 8(SDG8).During callus induction,the increased auxin accumulates SDG8 expression through a TIR1/AFBs-based transcriptional regulation.SDG8 then deposits H3 K36 me3 modifications on the loci of callus-related genes,including a master regulator WOX5 and the cell proliferation-related genes,such as CYCB1.1.This epigenetic regulation in turn is required for the transcriptional activation of these genes during callus formation.These findings suggest that the massive transcriptional reprogramming for cell fate transition by auxin during callus formation requires epigenetic modifications including SDG8-mediated histone H3 K36 methylation.Our results provide insight into the coordination between auxin signaling and epigenetic regulation during fundamental processes in plant development.

关键词： auxin callus formation epigenetic regulation H3K36 methylation SDG8 TIR1/AFBs

A Discussion on the Constitution Factors of Thin Endometrium Based on the Theory of Qi and Blood

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Journal of Clinical and Nursing Research 2022年第4期6卷 128-133页

作者： Yuchun Qian rongfeng Pu Jing cai Shaanxi University of Chinese Medicine Xianyang 712000Shaanxi ProvinceChina Affiliated Hospital of Shaanxi University of Chinese Medicine Xianyang 712000Shaanxi ProvinceChina

Thin endometrium has been proven to be a key contributing factor leading to infertility and poor pregnancy outcomes.Increasing the thickness and capacity of thin endometrium seems to be one of the challenging issues in reproductive medicine.The states of qi and blood are closely related to uterine blood circulation.Constitution is regarded as an important basis for determining the incidence as well as distinguishing,preventing,and treating diseases in traditional Chinese medicine.Based on the theory of qi and blood,this paper discusses the constitution factors of thin endometrium and puts forward the prospect of using big data tools to investigate the correlation between qi-blood imbalance constitution and the incidence of thin endometrium,so as to explore new approaches for the prevention and treatment of thin endometrium by regulating qi and blood as well as improving the constitution condition.

关键词： Theory of qi and blood Constitution Thin endometrium Infertility

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云计算技术背景下医院信息系统建设研究

数字通信世界 2023年第7期 16-18,21页

作者：蔡荣峰福建医科大学附属第二医院福建泉州362000

云计算是信息时代的产物,它在网络信息技术应用基础上,通过虚拟云实现信息的储存、处理与分析,成为当前一项重要的技术形式。在医院信息系统建设过程中,可以突破以往的技术应用局限,将云计算技术深度应用于信息系统之中。目前,伴随社会... 详细信息

云计算是信息时代的产物,它在网络信息技术应用基础上,通过虚拟云实现信息的储存、处理与分析,成为当前一项重要的技术形式。在医院信息系统建设过程中,可以突破以往的技术应用局限,将云计算技术深度应用于信息系统之中。目前,伴随社会医疗意识及需求的转变,医疗服务的规模化、专业化、数字化,对医疗信息系统建设提出了更高要求,以云计算为平台的医院信息系统应运而生,也标志着医疗信息服务将进入全新领域。据此,文章以云计算技术为背景,阐述医院信息系统与云计算的融合特征,分析云计算在医院信息系统建设中的机遇,并结合实际开展医院信息系统优化设计,以进一步提升其应用的维度与性能,保证数据存储的实时性、高效性和安全性,推动医院信息系统建设不断创新发展。

关键词：云计算医院信息系统优化设计

Nitrogen release characteristics of polyethylene-coated controlled-release fertilizers and their dependence on membrane pore structure

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Particuology 2018年第1期16卷 158-164页

作者： Xiangdong Yang rongfeng Jiang Yangzheng Lin Yanting Li Juan Li Bingqiang Zhao Key Laboratory of Plant Nutrition and Fertilizer Ministry of Agricultureflnstitute of Agricultural Resources and Regional Planning Chinese Academy of Agricultural Sciences Beijing 100081 China College of Resources and Environmental Sciences Centre for Resources Environment and Food Security China Agricultural University Beijing 100193 China Geophysical Laboratory Carnegie Institution of Washington Washington DC 20015 USA

In this study, controlled-release fertilizers （CRFs） with five different nitrogen release periods were pre- pared by coating large urea particles with polyethylene （PE） membranes under various experimental conditions. The preliminary and differential solubility rates, release periods, and membrane pore sizes of the obtained CRFs were measured using water immersion, scanning electron microscopy, and mercury porosimetry. For all CRF samples, the median pore diameters of the membranes were equal to 4.5-5.3 nm and pores with sizes smaller than 10 nm accounted for 86-96% of the total pore surface area. The obtained pore diameter distributions differed for the five studied types of CRF, having release periods of 1,2, 4, 6, and 8 months. Thus, for the CRFs with a 1-month release period, the maximum pore diameter reached a magnitude of 4000 nm, while this value did not exceed 30 nm for the CRFs with a release period of 8 months. Hence, we have established a relationship between the release period of CRFs and their effective maximum pore sizes.

关键词： Controlled-release fertilizer Nutrient release period Membrane pore structure Mercury porosimetryPore size

A wireless, implantable optoelectrochemical probe for optogenetic stimulation and dopamine detection

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Microsystems & Nanoengineering 2020年第1期6卷 590-601页

作者： Changbo Liu Yu Zhao Xue cai Yang Xie Taoyi Wang Dali Cheng Lizhu Li rongfeng Li Yuping Deng He Ding Guoqing Lv Guanlei Zhao Lei Liu Guisheng Zou Meixin Feng Qian Sun Lan Yin Xing Sheng School of Materials Science and Engineering and Hangzhou Innovation Institute Beihang UniversityBeijing 100191China Department of Electronic Engineering Beijing National Research Center for Information Science and Technology and IDG/McGovern Institute for Brain ResearchTsinghua UniversityBeijing 100084China Department of Physics Tsinghua UniversityBeijing 100084China Beijing Institute of Collaborative Innovation Beijing 100094China School of Materials Science and Engineering Tsinghua UniversityBeijing 100084China Beijing Engineering Research Center of Mixed Reality and Advanced Display School of Optics and PhotonicsBeijing Institute of TechnologyBeijing 100081China Department of Mechanical Engineering Tsinghua UniversityBeijing 100084China Key Laboratory of Nano-devices and Applications Suzhou Institute of Nano-Tech and Nano-BionicsChinese Academy of Sciences(CAS)Suzhou 215123China

Physical and chemical technologies have been continuously progressing advances in neuroscience research.The development of research tools for closed-loop control and monitoring neural activities in behaving animals is highly desirable.In this paper,we introduce a wirelessly operated,miniaturized microprobe system for optical interrogation and neurochemical sensing in the deep brain.Via epitaxial liftoff and transfer printing,microscale light-emitting diodes(micro-LEDs)as light sources and poly(3,4-ethylenedioxythiophene)polystyrene sulfonate(PEDOT:PSS)-coated diamond films as electrochemical sensors are vertically assembled to form implantable optoelectrochemical probes for real-time optogenetic stimulation and dopamine detection capabilities.A customized,lightweight circuit module is employed for untethered,remote signal control,and data acquisition.After the probe is injected into the ventral tegmental area(VTA)of freely behaving mice,in vivo experiments clearly demonstrate the utilities of the multifunctional optoelectrochemical microprobe system for optogenetic interference of place preferences and detection of dopamine release.The presented options for material and device integrations provide a practical route to simultaneous optical control and electrochemical sensing of complex nervous systems.

关键词： electrochemical microprobe printing

单源热蒸发制备阴离子比例可控的Sb_(2)(S,Se)_(3)薄膜用于高性能太阳能电池

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Science China Materials 2023年第9期66卷 3415-3423页

作者：高金祥车波蔡慧玲肖鹏张立建蔡志远朱长飞唐荣风陈涛 Department of Materials Science and Engineering School of Chemistry and Materials ScienceUniversity of Science and Technology of ChinaHefei 230026China Institute of Energy Hefei Comprehensive National Science CenterHefei 230041China

硒化锑(Sb_(2)(S,Se)_(3))因其高化学稳定性、绝佳光电特性和低成本等优势而成为一种有前途的光伏材料.在新兴的太阳能领域中,开发合适的材料加工方法控制元素比例,从而达到钝化Sb_(2)(S,Se)_(3)薄膜的深能级缺陷的目的,是基本需求也是... 详细信息

硒化锑(Sb_(2)(S,Se)_(3))因其高化学稳定性、绝佳光电特性和低成本等优势而成为一种有前途的光伏材料.在新兴的太阳能领域中,开发合适的材料加工方法控制元素比例,从而达到钝化Sb_(2)(S,Se)_(3)薄膜的深能级缺陷的目的,是基本需求也是挑战.在此,我们开发了一种阴离子元素比例控制方法,通过烧结Sb,S和Se元素前体来调整Sb_(2)(S,Se)_(3)合金化合物中的阴离子摩尔比.我们可以相当精确地估计出,通过单源热蒸发过程蒸发预烧结Sb_(2)(S,Se)_(3)合金化合物而制备的单相Sb_(2)(S,Se)_(3)薄膜中的阴离子摩尔比.我们发现,获得的Sb_(2)(S,Se)_(3)薄膜可以基本保持前体合金化合物的阴离子元素比例,这为控制薄膜的组成提供了一个高效的方法.我们还证明了深层缺陷和定向晶体生长对S/Se原子比的依赖性,以及如何利用这种可调性来改善与光伏能源转换相关的载流子传输.通过引入低成本的CuPc掺杂的P3HT作为空穴传输层,实现了高效的Sb_(2)(S,Se)_(3)太阳能电池,功率转换效率达到8.25%.我们的研究提出了一种新的方法来制造金属硫化物半导体薄膜,并实现了Sb_(2)(S,Se)_(3)太阳能电池的性能改进.

关键词：太阳能电池功率转换效率光伏材料热蒸发高化学稳定性半导体薄膜金属硫化物材料加工

农村居民点用地混合利用对乡村活力的影响:基于山东省的实证研究

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农业资源与环境学报 2022年第6期39卷 1283-1292页

作者：张佰林张汝佳曲衍波乔荣锋蔡为民吴云青天津工业大学环境科学与工程学院天津300387 天津工业大学经济与管理学院天津300387 山东财经大学公共管理学院济南250014

土地混合利用是提高土地利用集约度、激发地区活力的重要途径。本研究构建了农村居民点用地混合利用与乡村活力关系的分析框架,并以山东省为例,运用辛普森多样化指数、多因素综合评价法、相关性检验等探究农村居民点用地混合利用对乡村... 详细信息

土地混合利用是提高土地利用集约度、激发地区活力的重要途径。本研究构建了农村居民点用地混合利用与乡村活力关系的分析框架,并以山东省为例,运用辛普森多样化指数、多因素综合评价法、相关性检验等探究农村居民点用地混合利用对乡村活力的影响。结果表明:2010—2018年山东农村居民点用地混合利用指数增速高、中、低区(县)的乡村活力指数增速分别为84.70%、60.74%、50.33%,农村居民点用地混合利用增速越快,乡村活力发展越快;2010年山东农村居民点用地混合利用程度低、中、高区(县)的乡村活力指数分别为0.13、0.23、0.29,2018年分别为0.19、0.24、0.38,农村居民点用地混合利用程度越高,乡村活力水平越高;Spearman相关性分析和Kruskal-Wallis检验结果表明,农村居民点用地混合利用程度与乡村活力显著相关,且对乡村活力具有激发作用。研究认为,农村居民点用地混合利用是激发乡村活力的有效途径,这为编制村庄规划、助推乡村振兴提供新思路。

关键词：农村居民点用地土地混合利用乡村活力村庄规划山东省

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基于LoRa的无线传输采集节点设计

通信电源技术 2022年第18期39卷 19-21,25页

作者：郑炜蔡小伟薛荣烽黄桂萍张榕洲龙岩学院物理与机电工程学院福建龙岩364012

通过研究基于远距离无线电(Long Range Radio,LoRa)硬件协议的无线传输采集节点,提出了一种LoRa自定义通信协议。利用软件协议完成网络节点之间的信息通信,实现采集节点之间的控制请求、控制应答、上报请求以及上报应答。利用单片机的... 详细信息

通过研究基于远距离无线电(Long Range Radio,LoRa)硬件协议的无线传输采集节点,提出了一种LoRa自定义通信协议。利用软件协议完成网络节点之间的信息通信,实现采集节点之间的控制请求、控制应答、上报请求以及上报应答。利用单片机的灵活扩展性,将传统工业上的ModBus-RTU通信、模拟量输入与继电器输出集成在无线传输采集节点上。以STM32G030F6P6为主控芯片搭建硬件电路,编写软件程序并制作出样机。经过测试,设计的样机基本满足所需功能要求。

关键词：远距离无线电(LoRa) STM32G030F6P6 ModBus-RTU通信无线传输