排序方式: 共有38条查询结果,搜索用时 15 毫秒
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合成了N乙基4乙酰胺基1,8萘亚胺(NA)。结果表明,以NA为发光层,聚乙烯咔唑(PVK)为空穴传输层的多层薄膜发光器件Al/NA/PVK/ITO,在正相驱动电压为275V时,可获得150cd/m2的N乙基4乙酰胺基1,8萘亚胺(NA)的黄绿光。 相似文献
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Pentacene-based organic field effect transistors(OFETs) are fabricated using poly(methyl methacrylate)(PMMA) and polyimide(PI) as gate dielectrics,respectively.The fabricated OFETs exhibit reasonable device characteristics.The field-effect mobility,threshold voltage,and on/off current radio are determined to be 3.214 ×10^-2 cm^2 /Vs,-28 V,and 1 ×10^3 respectively for OFETs with PMMA as gate dielectrics,and 7.306×10^-3cm^2 /Vs,-21 V,and 2 ×10^2 for OFETs with PI.Furthermore,the dielectric properties of gate insulator layer are tested and the dipole effect at the semiconductor/dielectrics interface is also analyzed by a model of energy level diagram. 相似文献
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Al掺杂ZnO纳米棒的性能研究及其在太阳能电池中的应用 总被引:5,自引:5,他引:0
通过水热法制备了不同质量分数(0%,0.5%,1.0%和1.5%)的Al 3+掺杂ZnO纳米棒,扫描电镜(SEM)、X射线衍射(XRD)、紫外-可见(UV-vis)吸收光谱等测试结果表明,通过这种方法得到了较为规整的ZnO纳米阵列,结晶良好、具有明显的c轴生长取向;掺杂浓度的增加对产物的形貌和晶体结构产生了明显的影响。通过瞬态光谱和面电阻测试发现,Al 3+掺杂提高了ZnO传导电子的能力。将Al 3+掺杂的ZnO纳米棒同时作为电极与电子传输层,应用于有机太阳能电池器件中,在低浓度(0.5at.%)掺杂时得到最佳的器件性能,相比于未掺杂的ZnO纳米棒,短路电流提高了30%,光电转化效率提高了50%。 相似文献
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We report the plasmon-enhanced polymer bulk-heterojunction solar cells with Ag nanoparticles (AgNPs) obtained via chemical method. Here, the AgNPs films with different particle densities are introduced between the poly (3,4-ethylene dioxythiophene) poly (styrenesulfonate) (PEDOT: PSS) buffer layer and the poly (3-hexythiophene):[6,6]-phenyl-c61 butyric acid methyl ester (P3HT: PCBM) layer. By improving the optical absorption of the active layer owing to the localized surface plasmons, the power conversion efficiency of the solar cells is increased compared with the control device. It is shown that the efficiency of the device increases with the density of AgNPs. For the device employing higher density, the resulted power conversion efficiency is found to increase from 2.89% to 3.38%, enhanced by 16.96%. 相似文献
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利用对四联苯p -4P 以及五氧化二钒V2O5同时修饰导电沟道及源/漏电极,大幅
提高了基于酞菁铜CuPc场效应晶体管的性能。本文通过在绝缘层SiO2和有源层CuPc
之间插入p-4p缓冲薄层,同时在源/漏电极Al与有机半导体之间引入电极修饰层V2O5,
使得CuPc场效应晶体管的饱和迁移率和电流开/关比分别提高到5×10-2cm2 / V s和
104。p -4P能够诱导p型CuPc形成高度取向的连续薄膜,使得载流子能够在有源层中
更好地传输;而V2O5能够调节载流子的注入势垒,并可有效地降低沟道接触电阻(Rc)。
此方法能够在降低器件制备成本的前提下,大幅提高器件的性能。 相似文献