High response organic ultraviolet photodetector based on bis (2-methyl-8-quinolinato)-4-phenylphenolate aluminum

We report highly efficient visible-blind ultraviolet photodetectors based on 1,3,5-tris(3-methylphenyl-phenylamino)-triphenyamine (m-MTDATA) as donor and bis(2-methyl-8-quinolinato)-4-phenylphenolate aluminum (BAlq) as acceptor. Strong photoluminescence quenching of m-MTDATA by BAlq is observed manifesting the efficient photoinduced charge transfer occurs between m-MTDATA and BAlq. The optimized device exhibits a photocurrent of 172 μA/cm² at ?14 V under an illumination of 365 nm UV light irradiation with an intensity of 0.691 mW/cm², corresponding to a responsivity of 248 mA/W. We attribute the high response to the efficient electron transfer from the donor to the acceptor, the feasible level alignment match and the high carrier mobility of photoresponsive materials.     

Vibrational spectra of functionalized fullerenes containing amide

The set of three new hydrogen bonding functionalized fullerenes containing amide (PCB-t-BA, PCB-n-BA, and MPCB-t-BA) was investigated using the infrared absorption and Raman scattering spectroscopies. Additionally, the quantum chemical calculations of the equilibrium geometry and normal mode vibrations of the molecules were performed. Role of hydrogen bonds (HB) in the investigated samples was under our particular attention. Bifurcated HB was suggested.     

Composition and annealing effects in solution-processable functionalized graphene oxide/P3HT based solar cells

Characterization of a solution-processable functionalized graphene oxide (SPFGraphene oxide) was investigated by FT-IR spectroscopy and the result of elemental analysis showed that the isocyanate treatment results in the functionalization groups in SPFGraphene oxide. Doping SPFGraphene oxide to P3HT based solar cells induces absorbing spectra more strongly and a great quenching of the photoluminescence of the P3HT. With an increase in the SPFGraphene oxide content, the overall performances of the hybrid devices increases first, reaching the peak efficiency for the 10 wt% SPFGraphene oxide content, and then decreases. After annealing at 160 °C for different time durations, the device containing 10 wt% of SPFGraphene oxide for 10 min shows the best performance with a power conversion efficiency of 1.046%, an open-circuit voltage of 0.73 V, a short-circuit current density of 3.98 mA cm^?2 and a fill factor of 0.36 under simulated AM1.5G conditions at 100 mW cm^?2; The similar content one for 20 min shows η value of 1.013%, which is lower than the former one to a small extent for longer annealing duration. The graphene has the potential to act as the next-generation material in the photovoltaic devices and other applications for ease of preparation, low price, large surface area, high conductivity and excellent transparency.     

弹簧支吊架的选用及设计

详细描述和说明管道设计中弹簧支吊架的选用及设计,重点阐述弹簧支吊架的分类、结构、类型和选型等。指出设计和施工中应注意的问题。     

宝钢不锈钢冷轧厂光平整液废水处理系统

介绍了一套完全崭新的工艺用于热镀锌机组排放的光整液及碳钢连退机组排放的平整液废水处理系统。该工艺采用均质调节池—pH中和罐—溶气气浮—冷却塔—EGSB—MBR装置。该工艺流程很好地解决了钢铁行业冷轧厂的光平整液废水处理这一大难题。     

《工业水处理》质量与学术影响力分析

依据中国知网开发的中国期刊全文数据库、中国引文数据库及中国科学院开发的中国科技期刊引证指标数据库,采用文献计量学方法对《工业水处理》杂志2004—2008年的载文、引文,2004—2007年的被引、学科影响力等进行调查研究及定量分析,客观揭示该刊在我国学术界的整体水平及主要影响。以期对期刊的发展提供客观依据。     

钢铁企业净循环水泵房设计与运行若干问题的探讨

钢铁企业的循环水系统对生产单元是非常重要的,各个工序都需要大量的冷却水,要使循环水系统运行安全、稳定、经济、合理,设计方案的优化与设计细节问题的考虑非常关键。作者根据实际生产运行经验就钢铁企业净循环泵房设计时总图考虑、管线布置、水质保证措施等问题进行了分析探讨,提出了从设计阶段就考虑优化运行问题的思路。     

向心力的转变——以《侯马盟书》和《祖逖传》为例

纵览上下五千年的历史,在国家出现纷乱,各个政治力量群雄并起的时候,聚拢各方势力的有效方式即经济联系。通过经济关系使若干分散力量统一于一方势力之下后,维系这些汇合势力的手段在不同时代所采取的方式却大不相同。春秋时期乃至战国早期,虽然社会处于礼崩乐坏的社会态势下,但仍以盟誓作为主导方式,辅之以经济手段,盟誓对各方的约束力要超过经济利益。历史越向后发展,这种反差表现得就越为明显。     

新型环氧树脂泡沫塑料制备及其性能研究

采用两步法制备环氧(EP)树脂泡沫塑料,并对其结构和性能进行了表征。结果表明,EP固化完全,观察不到827cm-1处环氧基的特征峰。所得的EP泡沫塑料为闭孔结构,泡孔均匀,密度最低可达0.14g/cm3,玻璃化转变温度为107℃,起始分解温度为352.5℃。     

浆态床合成气制二甲醚反应器数学模拟

建立了包括液相返混和催化剂颗粒沉降的合成气一步法制二甲醚浆态床反应器的数学模型,模拟计算了空速、原料气组成、反应温度、反应压力等反应条件对反应的影响。计算结果表明,CO转化率和二甲醚的选择性随温度增加、压力增大而提高,在一定温度、压力条件下,CO转化率随空速增大而减小,合成气含有一定量的CO2有利于CO转化率增加。