多孔陶瓷材料的的研究现状及应用

概述了多孔陶瓷的形成机理,介绍了多孔陶瓷的成孔方法及特点,并详细概述了多孔陶瓷的制备工艺,具体阐述了各种方法的特点,指出了多孔陶瓷的现状和需要解决的问题.     

储气库水平井井身结构优化技术及应用

储气库水平井井身结构优化技术是一项关键技术,它旨在提高储气库的储气能力和钻井效率。首先分析了储气库水平井井身结构优化技术的应用价值,并探讨了常见的几种优化技术内容,并以实际的案例进行技术应用阐述,旨在提高储气库水平井井身稳固性,优化储气库的储气能力和钻井效率。     

Improving operation lifetime of OLED by using thermally activated delayed fluorescence as host

We fabricated organic light-emitting diodes (OLEDs) with the thermally activated delayed fluorescence (TADF) material of 4CzIPN, which show better stability compared with the 4,4’-Bis(carbazol-9-yl)biphenyl (CBP) based devices. The half lifetime of the device using 4CzIPN as host material has doubled, and a slower voltage rise compared with that of CBP-based devices has been achieved, which indicates the improvement of stability. We attribute the better stability to the good film morphology and difficult crystallization property of 4CzIPN. Our results suggest that employing the 4CzIPN as host material can be a promising way of fabricating OLEDs with longer operation lifetime.     

Co-doping method used to improve the charge transport balance in solution processed OLEDs

In this paper, co-doping method is used to improve the current efficiency of solution-processed organic light-emitting diodes (OLEDs). By changing the ratio of two thermally activated delayed fluorescent (TADF) emitters, we studied the performance of device and its mechanism. A solution processed OLED with a structure of indium tin oxide (ITO, 150 nm)/PEDOT:PSS (30 nm)/CBP:4CzIPN-x%:4CzPN-y% (30 nm)/TPBi (40 nm)/LiF (1 nm)/Al (100 nm) was fabricated. The current efficiencies of 26.6 cd/A and 26.4 cd/A were achieved by the devices with dopant ratio of 6% 4CzIPN:2% 4CzPN and 2% 4CzIPN:6% 4CzPN in emitting material layer (EML), respectively. By investigating the tendency of current density change in devices with different doping ratio, we suggested that the enhancement of the current efficiency should be due to the charge transport balance improvement induced by assist dopant in EML.     

Improved performance of CdSe/ZnS quantum dot light-emitting diodes through doping with small molecule CBP

The poor film formation of CdSe/ZnS quantum dots (QDs) during spin-coating makes a substantial impact on the device performance of quantum dot light-emitting diodes (QLEDs). This work proposes a method to improve the morphology of the quantum dot light-emitting layer (EML) by adding small organic molecular 4,4''-Bis(9H-carbazol-9-yl) biphenyl (CBP) into the layer. Its surface roughness reduces from 6.21 nm to 2.71 nm, which guarantees a good contact between hole transport layer (HTL) and EML. Consequently, the CdSe/ZnS QDs:CBP based QLED achieves maximum external quantum efficiency (EQE) of 5.86%, and maximum brightness of 10 363 cd/m2. It is demonstrated that the additive of small organic molecules could be an effective way to improve the brightness and the efficiency of QLEDs.     

基于FPGA的动态光弹仪声光同步系统的研制

通过动态光弹来观测超声声场传播过程的技术,是一种非常实用的超声无损检测辅助手段,其在检测方案、检测工艺参数确定上具有重要意义。但目前随着声学研究的不断深入以及电子计算机技术飞速发展对声光同步系统延时控制精度提出了更高的要求。提出一种用FPGA作为核心器件,将微控制单元、高精度计数单元等集成一体的设计方案。阐述了技术要点和设计方案,实现了动态光弹仪声光同步延时系统的高精度控制。整套系统结构精简、集成度高且成本低廉,对动态光弹技术在声场成像研究中的应用具有重要意义。     

紫外光改性银阳极对绿光OLED器件性能的影响

为提升OLED器件(结构为Ag/NPB/Alq3/LiF/Al)的性能,采用紫外光(UV)对银(Ag)阳极进行改性,探究阳极改性对器件性能的影响.研究结果表明:UV改性Ag阳极的时长为50 s时,器件性能最佳,启亮电压从20 V降低到6V,最大亮度从101.6 cd/m2提高到5 609.2 cd/m2,电流效率得到很大提升,且改性前后其发光峰的位置没有改变.UV改性使Ag阳极表面氧化生成氧化物,该氧化物薄层可作为空穴注入层,能够有效提高界面功函数,大大降低空穴注入势垒,提高了载流子注入能力,使绿光OLED器件的发光性能得到改善.这种利用UV改性Ag阳极的方法工艺简单,能有效降低空穴注入势垒,对提高该类柔性OLED器件的性能具有一定应用价值.     

多孔陶瓷材料的研究现状及应用

概述了多孔陶瓷的形成机理，介绍了多孔陶瓷的成孔方法及特点，并详细概述了多孔陶瓷的制备工艺，具体阐述了各种方法的特点，指出了多孔陶瓷的现状和需要解决的问题。     

绿色建筑技术在矿井行政福利建筑中的应用

 近年来,气候环境恶化已严重威胁到人类生存,对建筑领域来讲,节能减排的任务意义重大,也很艰巨。从国外的成功经验来看,在节能减排上效果显著的绿色建筑技术应用将成为破解资源瓶颈和应对气候变化的重要策略。作为一名煤炭行业的一名建筑师有责任和义务在煤炭行业建筑设计中采取积极的设计方法、积极与业主方有效沟通进行建筑设计实践探索。本文结合庞庞塔矿井行政福利建筑设计实践,就其建筑设计展开分析。将绿色建筑技术的理念融入到建筑设计中,在达到建筑实用性的同时,为人们提供健康、舒适的生活、工作环境,探讨适合严寒、寒冷地区特点的绿色建筑技术措施。     

基于组分的地聚合物胶凝材料反应机理及其制备参数的研究进展

地聚合物胶凝材料作为一种性能优异的绿色建筑材料,可通过硅铝质氧化物材料与碱激发剂在低温环境下反应进行制备,并被广泛应用于混凝土裂缝修复、装配式墙材、重金属固定等多个领域.地聚合物的合成机理较为复杂,当前从矿物的角度分析地聚合物合成只笼统地揭示了硅铝基的结合情况,不能有效区分不同结构的硅铝质氧化物内在反应机理,具有一定的局限性.以组分为切入点,通过分析粉煤灰、偏高岭土、矿渣、煤矸石等四种最为常见的硅铝质氧化物的反应机理及其在性能增强方面的相关研究,重点论述了硅铝质氧化物结构的差异、缩聚反应的机理、性能优化的最佳参数和外掺料及制备工艺,以期对地聚合物及其硅铝质氧化物的深入探究和应用提供参考.