Vacuum Ultraviolet Emission Spectra of Organic Photoconductors Excited by Low Energy Electrons.

低能电子激发有机光电导体的真空紫外发射光谱。

• 批准号: 05453055
• 负责人: SATO Naoki
• 金额: $ 4.8万
• 依托单位: KYOTO UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (B)
• 财政年份: 1993
• 资助国家: 日本
• 起止时间: 1993 至 1994
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-05453055/
• 关键词: Organic Photoconductor; Low Energy Electron; Vacuum Ultraviolet; Emission Spectrum; Unoccupied Level; Electronic Structure; Inverse Photoemissron

This work, the object of which is to observe directly the electronic structure of unoccupied levels in organic photoconductors, has been carried out for these two years, since those levels are even less studied experimentally than valence levels in spite of their importance in relation to physical and chemical properties.The main program of this work is to make an instrument for the measurement of vacuum ultraviolet light emitted in accordance with electronic relaxations to low unoccupied levels in a sample solid or thin film irradiated with low energy electrons in vacuo. We designed such an ultra-high vacuum compatible instrument consisting of a measurement chamber, a system for lodging an electron gun, a light detection system, a sample transfer system and a sample preparation chamber, through examinations of various aspects from measurement principles to practical processing of machineries, and reached a final stage to assemble the instrument at the end of the last fiscal year.In th … More is fiscal year we continued to adjust respective parts of the instrument. A severe problem which could not been foreseen at the stage of planning was found on a high-intensity low-energy electron gun designed with improving a Johnson-type one considerably, so that the parts of significance have been reproduced. Further, we have improved a light focusing system and a sensitizer at the first anode of the detector to increase the sensitivity for vacuum ultraviolet lights. With taking account of advices of researchers at the Institute for Solid State Physics, the University of Kyoto. On the other hand, ultra-high vacuum of the instrument was broken accidentally, when a sample cooling system, aimed to diminish a radiation damage by electron irradiation on an organic sample, was being troubleshooted. As every trial to trace the origin of the leak was failed, the instrument was returned to manufactory located at Osaka, and it was found that the main valve of the preparation chamber had been out of order. While its substitute was ordered (abroad), the earthquake attacked the southern area of the Hyogo Prefecture and damaged our instrument, which needed an overhaul. However, its reconstruction has almost been completed at the end of this fiscal year.Thus, the direct observation of unoccupied levels in organic photoconductors, included in the first plan of this project, has not yet been started. Nevertheless, the instrument to be useful for this purpose has almost been completed by the financial support of this Grant-in-Aid. We will make the most of it to studies of organic solid state chemistry. Less

这项工作已进行了两年，其目的是直接观察有机光电导体中未占能级的电子结构，尽管这些能级与物理和化学性质有关，但在实验上对它们的研究却比价态能级少得多。在真空中用低能电子辐照样品固体或薄膜中的电子弛豫到低未占据能级。通过从测量原理到实际机械加工等各方面的考察，设计了由测量室、电子枪收纳系统、光检测系统、试样输送系统、试样制备室等构成的超高真空兼容型仪器，并于上年度末进入了组装的最后阶段。 ...更多信息 本财年我们继续调整了仪器的各个部分。在对约翰逊型电子枪进行了较大改进后设计的高强度低能电子枪上发现了一个在计划阶段无法预见的严重问题，从而使有意义的部分得以重现。此外，我们改进了光聚焦系统和探测器第一阳极的敏化剂，以提高对真空紫外光的灵敏度。考虑到京都大学固体物理研究所研究人员的建议。另一方面，当旨在减少电子辐照对有机样品的辐射损伤的样品冷却系统被关闭时，仪器的超高真空被意外破坏。由于每次追踪泄漏来源的试验均失败，因此将仪器返回大坂的制造厂，发现制备室的主阀出现故障。虽然它的替代品被订购（国外），地震袭击了兵库县南部地区，损坏了我们的仪器，需要大修。然而，由于该研究所的重建工作在本财政年度结束时已基本完成，因此，本项目第一个计划中的有机光电导体中未占用能级的直接观测工作尚未开始。不过，在这一补助金的财政支持下，用于这一目的的工具几乎已经完成。我们将充分利用它来研究有机固体化学。少

项目成果

Sadamu YOSHIDA: "Photoelectric behavior of sublimed films of phenothiazine derivatives." Bull.Chem.Soc.Jpn.67. 2017-2023 (1994)

Sadamu YOSHIDA：“吩噻嗪衍生物升华薄膜的光电行为。”

Naoki SATO: "Characteristic electronic structures of organic solids classified in terms of molecular electronic relaxation." Synth.Metals. 64. 133-139 (1994)

Naoki SATO：“有机固体的特征电子结构根据分子电子弛豫进行分类。”

N.Sato: ""Characteristic electronic structurs of organic solids classified in terms of molecular electronic relaxation, "" Synth.Metals. 64. 133-139 (1994)

N.Sato：“根据分子电子弛豫分类的有机固体的特征电子结构”，Synth.Metals。

I.Shirotani, T.Kudo, N.Sato, H.Yamochi and G.Saito: ""Physical properties of evaporated thin films of bis (1,2-benzoquinone dioximato) -metal (II), M (bdq) _2 (M = Ni, Pd and Pt), "" J.Mater.Chem.(submitted for publication.).

I.Shirotani、T.Kudo、N.Sato、H.Yamochi 和 G.Saito：“双（1,2-苯醌二肟）-金属 (II)、M (bdq) _2 蒸发薄膜的物理特性

Naoki SATO: "Characteristic erectronic structures of organic solide classified in terms of molecular electronic relaxation." Synth.Metals. 64. 133-139 (1994)

Naoki SATO：“有机固体的特征电子结构根据分子电子弛豫进行分类。”