Synthesis and photovoltaic property of poly(3-octylthiophene)/titanium dioxide/ferric oxide composite

Titanium dioxide and ferric oxide were prepared by the supercritical fluid drying (SCFD) method. A conducting polymer composite, poly(3-octylthiophene)/titanium dioxide/ferric oxide (POT/TiO₂/Fe₂O₃) was first synthesized by chemical method. Transmission electron microscope (TEM) and scanning electron microscope (SEM) depicted the morphology of the samples, defining that TiO₂ and Fe₂O₃ were successfully coated by poly(3-octylthiophene) molecules. X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and infrared spectroscopy (IR) showed the chemical interaction between poly(3-octylthiophene) and inorganic compounds in the composite. Cyclic voltammetry (CV) curves showed that the forbidden band gap of the POT/TiO₂/Fe₂O₃ composite is 0.691 eV, realizing the complementary advantages of n and p semiconductor. UV–vis spectra (UV) and fluorescence spectra (PL) showed that its optical performance is far superior to poly(3-octyl thiophene), titanium dioxide and ferric oxide separately. Solar cell was sensitized by POT/TiO₂/Fe₂O₃. A solar-to-electric energy conversion efficiency of 0.499% was attained with the system.     

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.     

东莞理工学校人行通道涵承载力试验分析

介绍东莞理工学校人行通道涵静动载试验过程,借助MidasCivil专用有限元计算软件对该通道涵进行仿真分析,将试验实测值与理论计算值进行比较,据此评定该通道涵的承载性能。     

青岛市体育中心游泳跳水馆防水技术

介绍了青岛市体育中心游泳跳水馆的防水设计方案和施工工艺.从工程质量来看,所采用的美国雷帝(LATICRETE)防水系统效果优异,达到了预期的要求.     

梭形线圈制动绕线架的改进

简要介绍了一种适用于中小型高压电机定子梭形线圈绕制的制动绕线架,它在生产过程中起了减少铜扁线绝缘损伤的作用,并能提高生产效率.     

高职高专"数字电子技术"课程教学改革初探

从五个方面阐述了"数字电子技术"课程教学改革的思路,指出了当前"数字电子技术"课程教学中存在的一些问题,并提出了相应的解决方法.     

High-efficiency red electroluminescence from europium complex containing a neutral dipyrido(3,2-a:2′,3′-c)phenazine ligand in PLEDs

In order to obtain high-efficiency monochromatic red emission in polymer light-emitting devices, a tris(dibenzoylmethanato)(dipyrido(3,2-a:2′,3′-c)phenazine) europium [Eu(DBM)₃(DPPZ)] doped single-emissive-layer devices were fabricated using a blend of poly(9,9-dioctyl-fluorence) and 2-tert-butyl-phenyl-5-biphenyl-1,3,4-oxadiazole as a host matrix by solution process. Significantly improved electro-luminescent properties with sharp red emission at 611.5 nm were displayed in the Eu(DBM)₃(DPPZ)-doped devices at dopant concentrations from 1 to 8 wt.%. The highest luminance up to 1783 cd/m² at 2 wt.% dopant concentration, as well as the maximum external quantum efficiency of 2.5% and current efficiency of 3.8 cd/A were obtained at 1 wt.% dopant concentration.     

软件开发管理平台的构建

本文以“外包”模式下,如何提升软件开发管理水平为背景,详细描述了河北移动公司如何通过引进一系列软件开发管理工具,将其集成为一套软件开发管理平台。将涉及软件从需求到开发上线过程中各个环节全部纳入到该平台上进行管理,解决了“外包”模式下软件质量及开发效率低下的问题,从而有效满足企业自身发展的需要。     

八路13位数模转换器MAX547的原理及应用

ＭＡＸ５４７是美国ＭＡＸＩＭ公司生产的Ｄ／Ａ转换器。该转换器精度高,意境蛞恙微机接口方便,适合于工业过程的自动化控制。文中简要介绍了ＭＡＸ５４７的工作原理,并给出了ＭＡＸ５４７与８０５１单片机的接口电路。