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Illumination interface stability of aging-diffusion-modulated high performance InZnO/DyO_(x) transistors and exploration in digital circuits

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Journal of Materials Science & Technology 2021年第28期87卷 143-154页

作者： bing yang Gang He Qian Gao Wenhao Wang Yongchun Zhang Yufeng Xia Xiaofen Xu Leini Wang Miao Zhang School of Physics and Materials Science Radiation Detection Materials&Devices LabAnhui UniversityHefei230601China Institute of Physical Science and Information Technology Anhui UniversityHefei230601China School of Mechanical Engineering Anhui Vocational and Technical CollegeHefei230011China

In current study,the rare-reported solution-driven DyO_(x)films have been prepared to act as the dielectric layer of high performance InZnO/DyO_(x)thin film transistors(TFTs).Annealing temperature dependent thermal decomposition,morphology,crystallization behavior,and chemical compositions of DyO_(x) and InZnO films have been investigated respectively.Results have demonstrated that air-annealed InZnO/DyO_(x)TFTs possess the improved electrical performance,including ultrahigh on/off current ratio of 1×10^(9),larger saturation mobility of 12.6 cm^(2) V-1 s^(-1) and negligible hysteresis after 10 d aging diffusion in the relative humidity(RH)of 40%air ambient,which has been explored by the variable range-hopping(VRH)percolation model and energy band theory.The distinct illumination bias stability can be attributed to the generated various interface defects and concluded that the white light illuminated TFT behaves the higher stability with the smaller threshold voltage shift of 0.25 V.To confirm its feasible application in digital circuit,a resistor-loaded inverter based on InZnO/DyO_(x)TFTs has been constructed.A high gain of 10.1 and good dynamic response behavior have been detected at a low operating voltage of 2 V.As a result,it can be inferred that diffusion-induced enhanced carrier transporting mechanism is an economical and effective method to optimize the electrical performance of solution-derived InZnO/DyO_(x)TFTs,indicating its potential application prospects in flexible transparent electronics with low power consumption.

关键词： Dysprosium oxide(DyO_(x)) Thin film transistors(TFTs) Aging-diffusion Inverter Illumination bias stability

多策略检视问题设计确保试题命制质量——由一道错题引发的思考

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物理通报 2024年第5期 139-142页

作者：杨冰徐清洪重庆市第八中学校重庆401120

在命题实践中,一味求新求异,致使试题所考查的知识点超出中学物理范畴,难以达到检测学生核心素养的发展过程与现有水平的目的.以一个考查连接体的经典错题为例,尝试采用微元法、求导法、极坐标法及Origin绘图4种策略厘清连接体中加速度... 详细信息

在命题实践中,一味求新求异,致使试题所考查的知识点超出中学物理范畴,难以达到检测学生核心素养的发展过程与现有水平的目的.以一个考查连接体的经典错题为例,尝试采用微元法、求导法、极坐标法及Origin绘图4种策略厘清连接体中加速度关联情景,剖析该题错误成因,分析相同知识点在高考题中应如何设问,以规避错误的发生.希望引起一线命题者的共鸣,以此促进命题质量的提升.

关键词：命题连接体微元法求导 Origin绘图

Enhanced deep-red emission in donor-acceptor molecular architecture:The role of ancillary acceptor of cyanophenyl

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Chinese Chemical Letters 2019年第11期30卷 1947-1950页

作者： Yue Shen Xiaohui Tang Yuwei Xu Haichao Liu Shitong Zhang bing yang Yuguang Ma State Key Laboratory of Supramolecular Structure and Materials College of ChemistryJilin UniversityChangchun 130012China State Key Laboratory of Luminescent Materials and Devices South China University of TechnologyGuangzhou 510640China

Organic solid-state luminescent materials with high-efficiency deep-red emission have attracted considerable interest in recent years.Constructing donor-acceptor(D-A)type molecules has been one of most commonly used strategies to achieve deep-red emission,but it is always difficult to achieve high photoluminescence(PL)quantum yield(ηPL)due to forbidden charge-transfer state.Herein,we report a new D-A type molecule 4-(7-(4-(diphenylamino)phenyl)-9-oxo-9H-fluoren-2-yl)benzonitrile(TPAFOCN),deriving from donor-acceptor-donor(D-A-D)type 2,7-bis(4-(diphenylamino)phenyl)-9H-fluoren-9-one(DTPA-FO)with a fluorescence maximum of 627 nm in solids.This molecular design enables a transformation of acceptor from fluorenone(FO)itself to 4-(9-oxo-9H-fluoren-2-yl)benzonitrile(FOCN).Compared with DTPA-FO,the introduction of cyanophenyl not only shifts the emission of TPA-FOCN to deep red with a fluorescence maximum of 668 nm in solids,but also maintains the highηPL of 10%.Additionally,a solution-processed non-doped organic light-emitting diode(OLED)was fabricated with TPA-FOCN as emitter.TPA-FOCN device showed a maximum luminous efficiency of 0.13 cd/A and a maximum external quantum efficiency(EQE)of 0.22%with CIE coordinates of(0.64,0.35).This work provides a valuable strategy for the rational design of high-efficiency deep-red emission materials using cyanophenyl as an ancillary acceptor.

关键词： Deep-red emission Fluorenone Cyanophenyl group Donor-acceptor Organic light-emitting diodes

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巧设Δ用微元思想解决物理问题

物理通报 2024年第4期 71-73页

作者：徐清洪杨冰重庆市第八中学校重庆401120

微元法是分析、解决物理问题常用的方法,微元法可以把复杂的物理过程简化为学生熟知的简单的物理过程、物理规律.以3个问题为例,在分析和解决问题过程中通过微元法巧妙设置Δl、ΔT、Δθ,避开繁杂运算过程,旨在培养学生从局部到整体的... 详细信息

微元法是分析、解决物理问题常用的方法,微元法可以把复杂的物理过程简化为学生熟知的简单的物理过程、物理规律.以3个问题为例,在分析和解决问题过程中通过微元法巧妙设置Δl、ΔT、Δθ,避开繁杂运算过程,旨在培养学生从局部到整体的科学思维和提高学生运用核心知识解决问题的能力.

关键词：微元法加速度液柱移动压强转动切割

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民国时期贵州地区五倍子资源的开发利用

六盘水师范学院学报 2024年第2期36卷 32-40页

作者：邓召国杨斌贵州师范大学历史与政治学院贵州贵阳550025 贵州师范大学喀斯特生态文明研究中心贵州贵阳550025

五倍子是一种具有多重应用价值的传统中药材、染料林木和工业原料,主要为肚倍和角倍两大类,广泛分布于贵州各地。早在明弘治时期,贵州便开始开发利用五倍子资源,并作为商品参与贸易活动。至民国时期,随着制药业、纺织业、制革业等的快... 详细信息

五倍子是一种具有多重应用价值的传统中药材、染料林木和工业原料,主要为肚倍和角倍两大类,广泛分布于贵州各地。早在明弘治时期,贵州便开始开发利用五倍子资源,并作为商品参与贸易活动。至民国时期,随着制药业、纺织业、制革业等的快速发展,市场对五倍子的需求迅速增长。这一趋势推动五倍子贸易日益繁荣,并使其成为贵州出口货物的重要组成部分。从最初的野生散布到大规模种植,五倍子的产量得到了显著提高,对当地农业经济产生了深远影响。

关键词：民国时期贵州五倍子开发利用

The Xa7 resistance gene guards the rice susceptibility gene SWEET14 against exploitation by the bacterial blight pathogen

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Plant Communications 2021年第3期2卷 82-92页

作者： Dangping Luo Jose C.Huguet-Tapia R.Taylor Raborn Frank F.White Volker P.Brendel bing yang Division of Plant Sciences Bond Life Sciences CenterUniversity of MissouriColumbiaMO 65211USA Department of Plant Pathology University of FloridaGainesvilleFL 32611USA Department of Biology Department of Computer ScienceIndiana UniversityBloomingtonIN 47405USA Donald Danforth Plant Science Center St.LouisMO 63132USA Biodesign Institute Center for Mechanisms of Evolution Arizona State UniversityTempeAZ 85281USA

Many plant disease resistance(R)genes function specifically in reaction to the presence of cognate effectors from a pathogen.Xanthomonas oryzae pathovar oryzae(Xoo)uses transcription activator-like effectors(TALes)to target specific rice genes for expression,thereby promoting host susceptibility to bacterial blight.Here,we report the molecular characterization of Xa7,the cognate R gene to the TALes AvrXa7 and PthXo3,which target the rice major susceptibility gene SWEET14.Xa7 was mapped to a unique 74-kb region.Gene expression analysis of the region revealed a candidate gene that contained a putative AvrXa7 effector binding element(EBE)in its promoter and encoded a 113-amino-acid peptide of unknown function.Genome editing at the Xa7 locus rendered the plants susceptible to avrXa7-carrying Xoo strains.Both AvrXa7 and PthXo3 activated a GUS reporter gene fused with the EBE-containing Xa7 promoter in Nicotiana benthamiana.The EBE of Xa7 is a close mimic of the EBE of SWEET14 for TALe-induced disease susceptibility.Ectopic expression of Xa7 triggers cell death in N.benthamiana.Xa7 is prevalent in indica rice accessions from 3000 rice genomes.Xa7 appears to be an adaptation that protects against pathogen exploitation of SWEET14 and disease susceptibility.

关键词： Xa7 TAL effector Xanthomonas bacterial blight disease resistance SWEET14

合模线飞边在线测量与机器人智能磨抛加工技术

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制造业自动化 2024年第2期46卷 129-135页

作者：杨平杨冰雅肖硕男厦门大学航空航天学院厦门361102

传统合模线飞边的打磨方式多为人工打磨,不仅效率低,产品一致性也难以保证。为了进一步提升加工效率及稳定性,利用线激光测量与六轴工业机器人开展智能磨抛加工技术研究。首先,采用基于标准球的手眼标定方法进行线激光测量坐标系与机器... 详细信息

传统合模线飞边的打磨方式多为人工打磨,不仅效率低,产品一致性也难以保证。为了进一步提升加工效率及稳定性,利用线激光测量与六轴工业机器人开展智能磨抛加工技术研究。首先,采用基于标准球的手眼标定方法进行线激光测量坐标系与机器人加工坐标系坐标转换研究,对工作区进行分区域标定,以降低大负载机器人在不同工作区域性能指标的不同对标定结果的影响;其次,对线激光器采集的工件点云数据进行分析处理,采用距离法提取特征点,并利用三次B样条曲线拟合和基于最小二乘的曲面拟合方法求解机器人的姿态,将得到的机器人位姿与手眼标定结果相结合,实现对机器人的加工引导;最后,基于上述加工数据信息开展机器人智能识别定位与打磨加工试验测试。实验结果表明,经一次打磨后去除的材料体积约为543mm^(3),材料去除率约为5.8mm^(3)/s,并且,提取出的点云轮廓曲线粗糙度的平均值由打磨前的0.609减少为0.097,减少率约为84.1%。

关键词：工业机器人线激光测量仪手眼标定加工位姿打磨加工

Electronic structures and optical properties of two anthracene derivatives

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Science Bulletin 2006年第20期51卷 2444-2450页

作者： Peng Zhang Baohui Xia Yinghui Sun bing yang Wenjing Tian Yue Wang Guo Zhang Key Laboratory for Supramolecular Structure and Materials of Ministry of Education Jilin University Changchun China Department of Materials Science Jinlin University Changchun China Department of Chemistry Jilin University Changchun China

The electronic structures and the optical properties of two anthracene derivatives, DBMA and DAA, are investigated by both experimental techniques and quantum chemical calculations. The cyclic voltammetry and differential pulse polarograph measurement revealed that the introduction of benzol-imidazol and pyrrolo-pyridine group on the anthracene block can affect the electrochemical behavior of DBMA and DAA. Both UV/visible absorption and emission spectra of DBMA and DAA are red-shifted in contrast to the unsubstituted anthracene, so that the anthracene derivatives emit at blue-green region and the luminescence yields are remarkably elevated (over 90%). The B3LYP/6-31G theoretical calculations explored that the electronic structures of the anthracene derivatives are perturbed by the side substitutes on the anthracene block, and the slight variation of the electronic structures results in the enhanced electron accepting ability and the decrease of the HOMO-LUMO energy gap, which is the origin of the emission to be shifted to blue-green region. The non-planar geometry structures of DBMA and DAA are responsible for the excellent luminescence yields.

关键词： electrochemistry electronic structure UV/visible absorption luminescence density function calculation

Influence of N2 flow rate on structure and properties of TiBCN films prepared by multi-cathodic arc ion plating and studied with ion beam scattering spectroscopy

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Nuclear Science and Techniques 2017年第5期28卷 9-17页

作者： Bin Han Ze-Song Wang D. Neena Bao-Zhu Lin bing yang Chuan-Sheng Liu De-Jun Fu Key Laboratory of Artificial Micro-and Nano-Materials of Ministry of Education and School of Physics and Technology Wuhan UniversityWuhan 430072China School of Power and Mechanical Engineering Wuhan UniversityWuhan 430072China

TiBCN films were deposited on Si(100) and cemented carbide substrates by using multi-cathodic arc ion plating in C_2H_2 and N_2atmosp^here. Their structure and mechanical properties were studied systematically under different N_2 flow rates. The results showed that the Ti BCN films were adhered well to the substrates. Rutherford backscattering sp^ectroscopy was employed to determine the relative concentration of Ti, B, C and N in the films.The chemical bonding states of the films were explored by X-ray photoelectron sp^ectroscopy, revealing the presence of bonds of Ti N, Ti(C,N), BN, pure B, sp^2C–C and sp^3C–C, which changed with the N_2 flow rate. Ti BCN films contain nanocrystals of Ti N/Ti CN and Ti B_2/Ti(B,C)embedded in an amorphous matrix consisting of amorphous BN and carbon at N_2 flow rate of up to 250 sccm.

关键词： TiBCN Nanocomposite N2 flow rate Rutherford backscattering spectroscopy (RBS) X-ray photoelectron spectroscopy