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

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

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Development of antimony sulfide–selenide Sb2(S,Se)3-based solar cells

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Journal of Energy Chemistry 2018年第3期27卷 713-721页

作者： Xiaomin Wang rongfeng tang Chunyan Wu Changfei Zhu Tao Chen Key Laboratow of Materials for Energy Conversion Chinese Academy of SciencesDepartment of Materials Science and EngineeringUniversity of Science Techaology of ChinaNo.96 Jiazhai Road.Hefei 230026.AllhuiChina

Antimony sulfide–selenide Sb2（S,Se）3,including Sb2S3and Sb2Se3,can be regarded as binary metal chalcogenides semiconductors since Sb2S3and Sb2Se3are isomorphous.They possess abundant elemental storage,nontoxicity,good stability with regard to moisture at elevated temperatures and suitable physical parameters for light absorption materials in solar cells.To date,quite a few attempts have been conducted in the materials synthesis,photovoltaic property investigation and device fabrication.Benefiting from previous investigation in thin film solar cells and new generation nanostructured solar cells,this class of materials has been applied in either sensitized-architecture or planar heterojunction solar cells.Decent power conversion efficiencies from 5%to 7.5%have been achieved.Apparently,further improvement on the efficiency is required for future practical applications.To give an overview of this research field,this paper displays some typical researches regarding the methodologies toward the antimony sulfide–selenide synthesis,development of interfacial materials and device fabrications,during which we highlight some critical findings that promote the efficiency enhancement.Finally,this paper proposes some outstanding issue regarding fundamental understanding of the materials,some viewpoints for the efficiency improvement and their future challenges in solar cell applications.

关键词： Antimony sulfide–selenide Sb2S3 Sb2Se3 Solar cell Energy conversion

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Engineering microstructures for efficient Sb_(2)(S_(x)Se1−x)_(3) solar cells

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Journal of Semiconductors 2021年第7期42卷 8-10页

作者： rongfeng tang Tao Chen Liming Ding Hefei National Laboratory for Physical Sciences at Microscale Key Laboratory of Materials for Energy Conversion(CAS)School of Chemistry and Materials ScienceUniversity of Science and Technology of ChinaHefei 230026China Center for Excellence in Nanoscience(CAS) Key Laboratory of Nanosystem and Hierarchical Fabrication(CAS)National Center for Nanoscience and TechnologyBeijing 100190China

To realize solar-to-electrical energy conversion,several kinds of solar technologies have been developed since the in-vention of silicon solar cells.Recently,antimony selenosulf-ide Sb_(2)(S,Se)_(3)(including Sb_(2)S_(3) and Sb_(2)Se_(3))has been con-sidered one of the promising emerging materials for solar cell applications due to simple chemical composition,abund-ant elemental storage and excellent stability[1].

关键词： (3) (2) (x)

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Composition engineering of Sb_2S_3 film enabling high performance solar cells

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Science Bulletin 2019年第2期64卷 136-141页

作者： Yiwei Yin Chunyan Wu rongfeng tang Chenhui Jiang Guoshun Jiang Weifeng Liu Tao Chen Changfei Zhu CAS Key Laboratory of Materials for Energy Conversion Department of Materials Science and Engineering University of Science and Technology of China

Sb_2S_3 is a kind of stable light absorption materials with suitable band gap, promising for practical applications. Here we demonstrate that the engineering on the composition ratio enables significant improvement in the device performance. We found that the co-evaporation of sulfur or antimony with Sb_2S_3 is able to generate sulfur-or antimony-rich Sb_2S_3. This composition does not generate essential influence on the crystal structure, optical band and film formability, while the carrier concentration and transport dynamics are considerably changed. The device investigations show that sulfur-rich Sb_2S_3 film is favorable for efficient energy conversion, while antimony-rich Sb_2S_3 leads to greatly decreased device performance. With optimizations on the sulfur-rich Sb_2S_3 films, the final power conversion efficiency reaches5.8%, which is the highest efficiency in thermal evaporation derived Sb_2S_3 solar cells.

关键词： Solar cell Sb2S3 Thermal evaporation Co-evaporation Power conversion efficiency

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牦牛FABP3基因克隆及组织表达谱分析

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西北农林科技大学学报（自然科学版） 2024年第1期52卷 1-8页

作者：戴荣凤黄纯扎老路建卫唐月琴梁春年中国农业科学院兰州畜牧与兽药研究所甘肃省牦牛繁育工程重点实验室甘肃兰州730050 农业农村部青藏高原畜禽遗传资源育种重点实验室甘肃兰州730050 合作市佐盖多玛乡畜牧站甘肃甘南747000 合作市农畜产品质量安全检测检验中心甘肃甘南747000

【目的】分析牦牛心肌脂肪酸结合蛋白3(FABP3)基因的结构和功能,并检测其在成年牦牛和胎牛中的表达水平,为探究该基因在牦牛育种中的生物学功能提供理论参考。【方法】以美仁牦牛的心脏组织为试验材料,PCR扩增FABP3基因,对得到的编码区... 详细信息

【目的】分析牦牛心肌脂肪酸结合蛋白3(FABP3)基因的结构和功能,并检测其在成年牦牛和胎牛中的表达水平,为探究该基因在牦牛育种中的生物学功能提供理论参考。【方法】以美仁牦牛的心脏组织为试验材料,PCR扩增FABP3基因,对得到的编码区序列(CDS)进行生物信息学分析;利用实时荧光定量PCR(RT-qPCR),检测FABP3基因在成年牦牛和胎牛心脏、肝脏、脾脏、肺脏、肾脏及肌肉组织的表达水平。【结果】牦牛FABP3基因编码区序列长度为402 bp,编码133个氨基酸;蛋白质的高级结构主要是β-转角和延伸链;牦牛FABP3蛋白不存在跨膜区域和信号肽,属于具有一定亲水性的稳定蛋白;牦牛FABP3基因CDS区核苷酸及其编码氨基酸序列的同源性分析显示,FABP3基因在牛属动物中具有一定的保守性;系统进化树分析表明,牦牛与野牦牛和瘤牛的亲缘关系最近,与鸡的亲缘关系最远。RT-qPCR结果显示,FABP3基因在成年牦牛和胎牛的心脏、肝脏、脾脏、肺脏、肾脏及肌肉组织中均有表达,但在胎牛肝脏、脾脏、肾脏和肌肉中的表达水平显著或极显著高于成年牦牛,在成年牦牛肺脏中的表达水平极显著高于胎牛。【结论】克隆了牦牛FABP3基因,探究了FABP3基因在牦牛中的组织表达规律,为进一步研究该基因在牦牛脂肪沉积中的作用提供了基础数据。

关键词：美仁牦牛 FABP3 基因克隆生物信息学组织表达谱

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Abscisic Acid Antagonizes Ethylene Production through the ABI4-Mediated Transcriptional Repression of ACS4 and ACS8 in Arabidopsis

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Molecular Plant 2016年第1期9卷 126-135页

作者： Zhijun Dong Yanwen Yu Shenghui Li Juan Wang Saijun tang rongfeng Huang College of Biological Sciences China Agricultural University Beijing 100193 China plant Molecular Biology Department Biotechnology Research Institute Chinese Academy of Agricultural Sciences Beijing 100081 China National Key Facility of Crop Gene Resources and Genetic Improvement Beijing 100081 China These authors contributed equally to this article

Increasing evidence has revealed that abscisic acid （ABA） negatively modulates ethylene biosynthesis, although the underlying mechanism remains unclear. To identify the factors involved, we conducted a screen for ABA-insensitive mutants with altered ethylene production in Arabidopsis. A dominant allele of ABI4, abi4-152, which produces a putative protein with a 16-amino-acid truncation at the C-terminus of ABI4, reduces ethylene production. By contrast, two recessive knockout alleles of ABI4, abi4-102 and abi4-103, result in increased ethylene evolution, indicating that ABI4 negatively regulates ethylene produc- tion. Further analyses showed that expression of the ethylene biosynthesis genes ACS4, ACSS, and AC02 was significantly decreased in abi4-152 but increased in the knockout mutants, with partial dependence on ABA. Chromatin immunoprecipitation-quantitative PCR assays showed that ABI4 directly binds the pro- moters of these ethylene biosynthesis genes and that ABA enhances this interaction. A fusion protein containing the truncated ABI4-152 peptide accumulated to higher levels than its full-length counterpart in transgenic plants, suggesting that ABI4 is destabilized by its C terminus. Therefore, our results demon- strate that ABA negatively regulates ethylene production through ABI4-mediated transcriptional repression of the ethylene biosynthesis genes ACS4 and ACS8 in Arabidopsis.

关键词： ABA ABI4 ethylene biosynthesis stress response transcriptional regulation

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Visible-Light-Driven Bi2WO6/AgX /Ag（X=Br,I） Photocatalysts:Z-Scheme Photocatalytic Mechanism for Their Enhanced Photocatalytic Activity

Visible-Light-Driven Bi2WO6/AgX /Ag（X=Br,I） Photocatalysts...

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中国化学会第九届全国无机化学学术会议

作者： rongfeng tang Shengxia Duan Suyuan Zeng Department of Chemistry and Chemical Engineering University of Liaocheng

The Bi2WO6/Ag X/Ag（X= Br, I） hierarchical heterostructures were prepared by a 3-mercaptopropionic（MPA） assisted surface functionalization method. The as prepared samples were characterized by X-ray diffraction（XRD）, scanning electron microscopy（SEM）, transmission electron microscopy（TEM）, high-resolution TEM（HRTEM）, N2-sorption Brunauer-Emmett-Teller surface area（BET）, UV-vis diffuse-reflectance spectroscopy（DRS）, photoluminescence spectroscopy（PL spectra）, and X-ray photoelectron spectroscopy（XPS）. The as-obtained Bi2WO6/Ag X/Ag heterostructures exhibit enhanced photocatalytic activities than Bi2WO6 and AgX（X=Br or I）. The enhanced photocatalytic activities of the as-prepared sample could be attributed to the rapid separation and slow recombination of the photogenerated electron–hole pairs, which has been proved by the electrochemical and PL investigation. The photocatalytic mechanisms were analyzed by active species trapping and superoxide radical quantification experiments. It revealed that metallic Ag（0） act as the Z-scheme bridge for the as-prepared Bi2WO6/Ag X/Ag（X= Br, I） hetrostructures. Meanwhile, the as-prepared Bi2WO6/Ag X/Ag（X= Br, I） exhibits excellent cycling performance during the photocatalytic process, which may be a valuable and promising material in the treatment of dye containing wastewater.

关键词： Bi2WO6/AgX/Ag heterostructures visible-light-driven photocatalysis Z-scheme

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Self-microemulsifying drug delivery system for improving the bioavailability of huperzine A by lymphatic uptake

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Acta Pharmaceutica Sinica B 2017年第3期7卷 353-360页

作者： Fang Li rongfeng Hu Bin Wang Yun Gui Gang Cheng Song Gao Lei Ye Jihui tang Anhui University of Chinese Medicine Hefei 230038China National Chinese Medicinal Materials Products Quality Supervision and Inspection Center(Anhui) Bozhou 236800China Key Laboratory of Xin'an Medicine Ministry of Education Hefei 230038China Anhui“115”Xin'an Traditional Chinese Medical Research&Development Innovation Team Hefei 230038China Anhui Province Key Laboratory of R&D of Chinese Medicine Hefei 230038China School of Pharmacy Anhui Medical UniversityHefei 230022China

Huperzine A(Hup-A) is a poorly water-soluble drug with low oral bioavailability. A selfmicroemulsifying drug delivery system(SMEDDS) was used to enhance the oral bioavailability and lymphatic uptake and transport of Hup-A. A single-pass intestinal perfusion(SPIP) technique and a chylomicron flow-blocking approach were used to study its intestinal absorption, mesenteric lymph node distribution and intestinal lymphatic uptake. The value of the area under the plasma concentration–time curve(AUC) of Hup-A SMEDDS was significantly higher than that of a Hup-A suspension(P <0.01).The absorption rate constant(K_a) and the apparent permeability coefficient(P_(app)) for Hup-A in different parts of the intestine suggested a passive transport mechanism, and the values of K_a and P_(app) of Hup-A SMEDDS in the ileum were much higher than those in other intestinal segments. The determination of Hup-A concentration in mesenteric lymph nodes can be used to explain the intestinal lymphatic absorption of Hup-A SMEDDS. For Hup-A SMEDDS, the values of AUC and maximum plasma concentration(C_(max)) of the blocking model were significantly lower than those of the control model(P<0.05). The proportion of lymphatic transport of Hup-A SMEDDS and Hup-A suspension were about 40% and 5%,respectively, suggesting that SMEDDS can significantly improve the intestinal lymphatic uptake and transport of Hup-A.

关键词： Huperzine A Self-microemulsion Drug delivery systems SMEDDS Bioavailability Single-pass intestinal perfusion Lymphatic transport

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Effect of Ti substitution on hydrogen storage properties of Zr_(1-x)Ti_xCo (x = 0, 0.1, 0.2, 0.3) alloys

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Journal of Energy Chemistry 2014年第1期23卷 9-14页

作者： Yamin Zhao rongfeng Li Ruihe tang Boyan Li Ronghai Yu Wei Liu Huaqin Kou Jianbo Meng School of Materials Science and Engineering Beihang University Department of Materials Science and Engineering Tsinghua University China Academy of Engineering Physics

Zr1-xTixCo(x = 0, 0.1, 0.2, 0.3) alloys were prepared by arc-melting method and the effect of Ti substitution on hydrogen storage properties was studied systematically. Hydrogen desorption pressure-composition-temperature(PCT) measurements were carried out using Sievert’s type volumetric apparatus for ZrCo(at 473 K, 573 K and 673 K) and Zr1-xTixCo alloys(at 673 K), respectively. Products after dehydrogenation were characterized by X-ray diffraction(XRD). In addition, the kinetics of Zr1-xTixCo hydride was investigated at 473 K and 673 K,respectively, under hydrogen pressure of 5 MPa. Results showed that Ti substitution for Zr did not change the crystal structure of ZrCo phase.With the increase of temperature from 473 K to 673 K, the extent of disproportionation for ZrCo alloy increased. With Ti content increasing at 673 K, the desorption equilibrium pressure of Zr1-xTixCo-H2 systems elevated and the disproportionation reaction of Zr1-xTixCo alloys was inhibited effectively. Ti substitution decreased the kinetics rate and the effective hydrogen storage capacity of Zr1-xTixCo alloys slightly.Generally speaking, it was found that Zr0.8Ti0.2Co alloy had better anti-disproportionation property with less decrease of effective hydrogen storage capacity which was beneficial to tritium application in the International Thermonuclear Experimental Reactor(ITER).

关键词： ZrCo-based alloys Ti substitution hydrogen storage properties anti-disproportionation

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Adhesive anastomosis for organ transplantation

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Bioactive Materials 2022年第7期7卷 260-268页

作者： Kang Liu Hang Yang Gaobo Huang Aihua Shi Qiang Lu Shanpei Wang Wei Qiao Haohua Wang Mengyun Ke Hongfan Ding Tao Li Yanchao Zhang Jiawei Yu Bingyi Ren rongfeng Wang Kailing Wang Hui Feng Zhigang Suo Jingda tang Yi Lv National Local Joint Engineering Research Center for Precision Surgery and Regenerative Medicine Department of Hepatobiliary SurgeryFirst Affiliated Hospital of Xi’an Jiaotong UniversityXi’an710061Shaanxi ProvinceChina State Key Lab for Strength and Vibration of Mechanical Structures International Center for Applied MechanicsDepartment of Engineering MechanicsXi’an Jiaotong UniversityXi’an710049China John A.Paulson School of Engineering and Applied Science Kavli Institute for Bionano Science and TechnologyHarvard UniversityCambridgeMA02138USA Hepatobiliary Surgery Department Shaanxi Provincial People’s HospitalXi’an710068Shaanxi ProvinceChina

The recent development of tough tissue adhesives has stimulated intense interests among material scientists and medical doctors.However,these adhesives have seldom been tested in clinically demanding surgeries.Here we demonstrate adhesive anastomosis in organ transplantation.Anastomosis is commonly conducted by dense sutures and takes a long time,during which all the vessels are occluded.Prolonged occlusion may damage organs and even cause death.We formulate a tough,biocompatible,bioabsorbable adhesive that can sustain tissue tension and pressurized flow.We expose the endothelial surface of vessels onto a gasket,press two endothelial surfaces to the adhesive using a pair of magnetic rings,and reopen the bloodstream immediately.The time for adhesive anastomosis is shortened compared to the time for sutured anastomosis.We have achieved adhesive anastomosis of a great vein in transplanting the liver of a pig.After the surgery,the adhesive is absorbed,the vein heals,and the pig lives for over one month.

关键词： Magnet Hydrogel Adhesive Anastomosis Liver transplantation

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