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FABRICATION OF POLARIZED EMITTING DEVICES WITH INTERFACE-CONTROLLED CONJUGATED ORGANIC THIN FILMS

界面控制共轭有机薄膜偏振发射器件的制备

基本信息

批准号：
13555020
负责人：
UEDA Yasukiyo
金额：
$ 2.88万
依托单位：
Kobe University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
2001
资助国家：
日本
起止时间：
2001 至 2003
项目状态：
已结题

项目摘要

Organic thin films have high potential for next generation photoelectronic and photonic materials. Their physical properties heavily depend on the molecular orientation in the film. In this project, we aim to fabrication and characterization of low dimensional orientation-controlled organic thin films for electronic and photonic devices.The structure and optical properties of sigma-and pi-conjugated oligomers such as oligo-dimethylsilane (ODMS) and distyrylbenzene derivatives (timer of poly(p-phenylene vinylene) : PPV) vapor-deposited on uniaxially oriented polydimethylsilane (PDMS) and PPV films. ODMS and DSBs grew epitaxially on the PDMS and PPV layers. The ODMS/PDMS and DSBs/PPV double layers indicated the remarkable anisotropic feature in absorption and emission properties. The dichroic ratio of absorption and emission intensities were about 15 and 10, respectively. We succeeded in preparation of polarized emitting oligomer films as novel photonic materials.Uniaxially oriented pentacene films were also fabricated. The electrical property of pentacene/PTFE double layer also indicated anisotropic feature. The field effect mobility along to the traverse of the friction direction was 4.2x10^<-1>cm^2/Vs. We succeeded in preparation of high performance organic FET films.Thin film of J-aggregate of merocyanine (BTET) was prepared from vapor phase. Oriented structure and formation mechanism of J-aggregate were clarified. Moreover, liquid crystal (LC) cells were prepared by using Langmuir-Blodgett films of azobenzene as a substrate. Photochemical regulation of LC alignment depended on adsorption structure of azobenzene. The relative transmittance of the cell was changed reversibly by UV and visible light irradiation. These films had high potential for optical memory.Research results obtained in this project will be expected to contribute the fabrication of new photoelectronic and photonic devices with organic compounds

有机薄膜在下一代光电子和光子材料中具有很高的潜力。它们的物理性质很大程度上取决于薄膜中的分子取向。在这个项目中，我们的目标是制造和表征用于电子和光子器件的低维定向控制有机薄膜。研究了sigma和pi共轭低聚物低聚二甲基硅烷（ODMS）和二苯基苯衍生物（聚对苯乙烯（PPV）的时间点）在单轴定向聚二甲基硅烷（PDMS）和PPV薄膜上气相沉积的结构和光学性质。ODMS和dsb在PDMS和PPV层上外延生长。ODMS/PDMS和DSBs/PPV双层在吸收和发射性能上表现出显著的各向异性特征。吸收和发射强度的二向色比分别约为15和10。我们成功地制备了偏振发射低聚物薄膜作为新型光子材料。还制备了单轴取向的五苯薄膜。并五苯/聚四氟乙烯双层的电学性能也表现出各向异性特征。沿摩擦方向的场效应迁移率为4.2x10^<-1>cm^2/Vs。我们成功地制备了高性能的有机场效应晶体管薄膜。采用气相法制备了merocyanine J-aggregate （BTET）薄膜。阐明了j型骨料的取向结构和形成机理。此外，以偶氮苯的Langmuir-Blodgett薄膜为衬底制备了液晶（LC）电池。偶氮苯吸附结构对LC排列的光化学调控作用。紫外光和可见光的照射使细胞的相对透过率发生了可逆的变化。这些薄膜具有很高的光存储潜力。本课题的研究成果将为有机化合物的新型光电子和光子器件的制造做出贡献