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Journal of Semiconductors最新文献

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Low-temperature conformal vacuum deposition of OLED devices using close-space sublimation 使用近空间升华的OLED器件的低温保形真空沉积
4区 物理与天体物理 Q2 PHYSICS, CONDENSED MATTER Pub Date : 2023-09-01 DOI: 10.1088/1674-4926/44/9/092602
Bryan Siu Ting Tam, Shou-Cheng Dong, Ching W. Tang
Abstract Close-space sublimation (CSS) has been demonstrated as an alternative vacuum deposition technique for fabricating organic light-emitting diodes (OLEDs). CSS utilizes a planar donor plate pre-coated with organic thin films as an area source to rapidly transfer the donor film to a device substrate at temperatures below 200 °C. CSS is also conformal and capable of depositing on odd-shaped substrates using flexible donor media. The evaporation behaviors of organic donor films under CSS were fully characterized using model OLED materials and CSS-deposited films exhibited comparable device performances in an OLED stack to films deposited by conventional point sources. The low temperature and conformal nature of CSS, along with its high material utilization and short process time, make it a promising method for fabricating flexible OLED displays.
近空间升华(CSS)已被证明是制造有机发光二极管(oled)的一种替代真空沉积技术。CSS利用预先涂有有机薄膜的平面供体板作为面积源,在低于200°C的温度下将供体膜快速转移到器件基板上。CSS也是保形的,并且能够使用柔性供体介质沉积在异形基板上。利用模型OLED材料充分表征了有机施主薄膜在CSS下的蒸发行为,CSS沉积的薄膜在OLED堆叠中表现出与传统点源沉积的薄膜相当的器件性能。CSS的低温和保形特性,以及其高材料利用率和短工艺时间,使其成为制造柔性OLED显示器的一种有前途的方法。
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引用次数: 1
Impedance spectroscopy for quantum dot light-emitting diodes 量子点发光二极管阻抗谱
4区 物理与天体物理 Q2 PHYSICS, CONDENSED MATTER Pub Date : 2023-09-01 DOI: 10.1088/1674-4926/44/9/091603
Xiangwei Qu, Xiaowei Sun
Abstract Impedance spectroscopy has been increasingly employed in quantum dot light-emitting diodes (QLEDs) to investigate the charge dynamics and device physics. In this review, we introduce the mathematical basics of impedance spectroscopy that applied to QLEDs. In particular, we focus on the Nyquist plot, Mott−Schottky analysis, capacitance-frequency and capacitance-voltage characteristics, and the d C /d V measurement of the QLEDs. These impedance measurements can provide critical information on electrical parameters such as equivalent circuit models, characteristic time constants, charge injection and recombination points, and trap distribution of the QLEDs. However, this paper will also discuss the disadvantages and limitations of these measurements. Fundamentally, this review provides a deeper understanding of the device physics of QLEDs through the application of impedance spectroscopy, offering valuable insights into the analysis of performance loss and degradation mechanisms of QLEDs.
阻抗谱技术越来越多地应用于量子点发光二极管(qled)中,用于研究电荷动力学和器件物理特性。本文介绍了阻抗谱在qled中应用的数学基础。我们特别关注了奈奎斯特图,莫特-肖特基分析,电容频率和电容电压特性,以及qled的dc /d V测量。这些阻抗测量可以提供电子参数的关键信息,如等效电路模型、特征时间常数、电荷注入和复合点以及qled的陷阱分布。然而,本文也将讨论这些测量的缺点和局限性。从根本上说,本综述通过阻抗谱的应用对qled的器件物理有了更深入的了解,为分析qled的性能损失和退化机制提供了有价值的见解。
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引用次数: 1
Returning to Frankenstein: the spark of being and the fire of life. 回到弗兰肯斯坦:存在的火花和生命的火焰。
4区 物理与天体物理 Q2 PHYSICS, CONDENSED MATTER Pub Date : 2020-02-01 Epub Date: 2019-09-04 DOI: 10.1007/s12630-019-01471-z
Sara Grimes
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引用次数: 1
Intensive care discharge summaries for general practice staff: a focus group study. 针对全科医生的重症监护出院总结:焦点小组研究。
4区 物理与天体物理 Q2 PHYSICS, CONDENSED MATTER Pub Date : 2016-12-01 Epub Date: 2016-11-21 DOI: 10.3399/bjgp16X688045
Suzanne Bench, Jocelyn Cornish, Andreas Xyrichis

Background: Understanding how patients and relatives can be supported after hospital discharge is a UK research priority. Intensive Care Unit (ICU) discharge summaries are a simple way of providing GPs with the information they require to coordinate ongoing care, but little evidence is available to guide best practice.

Aim: This study aimed at better understanding the information needs of GP staff (GPs and practice nurses) supporting former patients of ICUs and their families following discharge from hospital, and identifying the barriers/facilitators associated with ICU-primary care information transfer.

Design and setting: This was a qualitative exploratory study of practices and participants throughout the UK.

Method: Audiotaped focus group discussions, complemented by small-group/individual interviews, were conducted with 15 former patients of ICUs, four relatives, and 20 GP staff between June and September 2015. Demographic data were captured by questionnaire and qualitative data were thematically analysed.

Results: Findings suggest variability in discharge information experiences and blurred lines of responsibility between hospital and GP staff, and patients/relatives. Continuity of care was affected by delayed or poor communication from the hospital; GPs' limited contact with patients from critical care; and a lack of knowledge of the effects of critical illness or resources available to ameliorate these difficulties. Time pressures and information technology were, respectively, the most commonly mentioned barrier and facilitator.

Conclusion: Effective rehabilitation after a critical illness requires a coordinated and comprehensive approach, incorporating the provision of well-completed, timely, and relevant ICU-primary care discharge information. Health professionals need an improved understanding of critical illness, and patients and families must be included in all aspects of the information-sharing process.

背景:了解出院后如何为患者和亲属提供支持是英国研究的重点。目的:本研究旨在更好地了解全科医生(全科医生和执业护士)在支持重症监护病房前患者及其家属出院后的信息需求,并确定与重症监护病房-基础护理信息传递相关的障碍/促进因素:这是一项对英国各地的实践和参与者进行的定性探索性研究:2015年6月至9月期间,对15名ICU前患者、4名亲属和20名全科医生进行了重点小组录音讨论,并辅以小组/个人访谈。问卷调查收集了人口统计学数据,并对定性数据进行了主题分析:研究结果表明,出院信息体验存在差异,医院和全科医生以及患者/亲属之间的责任界限模糊。医院的沟通延迟或不畅、全科医生与危重症患者的接触有限、缺乏对危重症影响的了解或可用于改善这些困难的资源,这些都影响了护理的连续性。时间压力和信息技术分别是最常被提及的障碍和促进因素:危重病后的有效康复需要一个协调和全面的方法,包括提供完整、及时和相关的 ICU-初级护理出院信息。医护人员需要提高对危重病的认识,患者和家属也必须参与到信息共享过程的各个方面。
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引用次数: 0
Peroxisome Proliferator-Activated Receptor-γ Agonists: Potential Therapeutics for Neuropathology Associated with Fetal Alcohol Spectrum Disorders. 过氧化物酶体增殖激活受体-γ 激动剂:胎儿酒精中毒谱系障碍相关神经病理学的潜在疗法。
4区 物理与天体物理 Q2 PHYSICS, CONDENSED MATTER Pub Date : 2016-12-01 Epub Date: 2016-11-14 DOI: 10.4172/2155-9899.1000469
Paul D Drew, Cynthia J M Kane

Fetal alcohol spectrum disorders (FASD) result from fetal exposure to alcohol during pregnancy. These disorders present a variety of sequelae including involvement of the central nervous system (CNS) with lasting impact on cognitive function and behavior. FASD occur at an alarming rate and have significant personal and societal impact. There are currently no effective treatments for FASD. Recent studies demonstrate that ethanol induces potent neuroinflammation in many regions of the developing brain. Furthermore, anti-inflammatory agents such as peroxisome proliferator-activated receptor (PPAR)-γ agonists suppress ethanol-induced neuroinflammation and neurodegeneration. This suggests that anti-inflammatory agents may be effective in treatment of FASD. Future studies designed to determine the specific mechanisms by which alcohol induces neuroinflammation in the developing CNS may lead to targeted therapies for FASD.

胎儿酒精谱系障碍(FASD)是胎儿在怀孕期间接触酒精所致。这些疾病会带来各种后遗症,包括中枢神经系统(CNS)受累,对认知功能和行为产生持久影响。FASD 的发病率惊人,对个人和社会都有重大影响。对于 FASD,目前还没有有效的治疗方法。最新研究表明,乙醇会在发育中大脑的许多区域诱发强烈的神经炎症。此外,抗炎药物(如过氧化物酶体增殖激活受体(PPAR)-γ 激动剂)可抑制乙醇诱导的神经炎症和神经退行性变。这表明抗炎药物对治疗 FASD 可能有效。未来的研究旨在确定酒精在发育中的中枢神经系统中诱导神经炎症的具体机制,这可能会导致针对 FASD 的靶向疗法。
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引用次数: 0
Role of pathways for signal transducers and activators of transcription, and mitogen-activated protein kinase in adipocyte differentiation. 信号转导和转录激活因子以及丝裂原活化蛋白激酶在脂肪细胞分化中的作用。
IF 8 4区 物理与天体物理 Q2 PHYSICS, CONDENSED MATTER Pub Date : 1999-10-30 DOI: 10.1007/s000180050450
J Aubert, N Belmonte, C Dani

Members of the signal transducer and activator of transcription (STAT) family and the mitogen-activated protein kinase (MAPK) cascade play a major role in the regulation of cell growth and differentiation. This review concentrates on the role played by these pathways in the development of adipose cells. STATs are activated by both positive and negative modulators of adipocyte differentiation leading to the hypothesis that the STAT pathway may function in adipogenesis. The role of the p42/p44 MAPK pathway in adipocyte differentiation has recently been the subject of contradictory reports. Several molecular mechanisms are proposed to explain the opposing effects of MAPK activation in the programme of adipose cell differentiation.

信号转导和转录激活因子(STAT)家族成员和丝裂原活化蛋白激酶(MAPK)级联在细胞生长和分化的调控过程中发挥着重要作用。本综述将集中讨论这些途径在脂肪细胞发育过程中发挥的作用。脂肪细胞分化的正性和负性调控因子都会激活 STAT,从而提出了 STAT 通路可能在脂肪生成过程中发挥作用的假设。关于 p42/p44 MAPK 通路在脂肪细胞分化过程中的作用,最近有一些相互矛盾的报道。有人提出了几种分子机制来解释 MAPK 激活在脂肪细胞分化过程中的相反作用。
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引用次数: 0
期刊
Journal of Semiconductors
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