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Study for Electron Affinitive and emissive characteristics of Various Impurities in Silicone Oil.

硅油中各种杂质的电子亲和和发射特性研究。

基本信息

批准号：
60550239
负责人：
TSUCHIDA Nuio
金额：
$ 1.22万
依托单位：
TOYOTA TECHNOLOGICAL INSTITUTE
依托单位国家：
日本
项目类别：
Grant-in-Aid for General Scientific Research (C)
财政年份：
1985
资助国家：
日本
起止时间：
1985 至 1986
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-60550239/
关键词：
Silicone Oil Thin Film Tunnel Emitter Charge Injection Electron Affinity Electron Emissive Characteristic 不純物イオン

项目摘要

The project was performed to investigate electron affinitive and electron emissive characters of various impurities in silicone oil, namely which kinds of impurities became easily negative or positive ions. Electron and hole were injected by a thin film tunnel emitter into two kinds of silicone oils, i.e. one was distilled by a fractionating column and another was contaminated by a dose of impurity.From the injection levels of electron and hole into such silicone oils, electron affinitive and electron emissive ability of various impurities in silicone oil were calculated. The values from 0 to 0.6 eV of electron affinity and values from 2 to 3 eV of energy for electron emission were acquired for various impurities.From the experimental results, it was found that the electron affinitive and electron emissive characters depended strongly on the structure of impurities. It became clear that such impurities having special structures as the followings had strong electron affinity.(1) Impurities made of strongly acid atoms like oxygen and chroline. (2) Impurities in which charge was localized and having large dipole moment. (3) Impurities of a large molecule with double bonds having <pi> electron which was able to move considerably easily.When electrical field is applied, the impurities of the structures (2) and (3) seem to give an effect of lowering the barrier hight for electron emission at the interface between a base and silicone oil for the sake of local field by the dipole. In other words such impurities should have large electron affinity.On the other hand it became clear that the impurities of structure (2) and (3) had a considerably large ability for electron emission also. Furthermore impurities which had loan electron pairs had an ability for electron emission.

该项目旨在研究硅油中各种杂质的电子亲和力和电子发射特性，即哪些杂质容易成为负离子或正离子。通过薄膜隧道发射器将电子和空穴注入两种硅油中，一种是通过分馏柱蒸馏的，另一种是被一定剂量的杂质污染的。根据电子和空穴注入到这种硅油中的水平，计算出硅油中各种杂质的电子亲和力和电子发射能力。对于各种杂质，获得了0至0.6 eV的电子亲和力值和2至3 eV的电子发射能量值。从实验结果发现，电子亲和力和电子发射特性强烈依赖于杂质的结构。发现如下具有特殊结构的杂质具有很强的电子亲和力。 (1)由氧、氯等强酸原子构成的杂质。 (2)电荷局域化且偶极矩大的杂质。 (3)具有<pi>电子的大分子的杂质，该双键能够相当容易地移动。当施加电场时，结构(2)和(3)的杂质似乎由于偶极子的局部场而具有降低基底和硅油之间的界面处的电子发射势垒高度的效果。换句话说，这样的杂质应该具有大的电子亲和力。另一方面，结构(2)和(3)的杂质也清楚地具有相当大的电子发射能力。此外，具有借出电子对的杂质具有电子发射的能力。