MEASUREMENTS OF CONDUCTION BANDS AND ELECTRON AFFINITIES OF ORGANIC SOLIDS BY SURFACE BARRIER.

通过表面势垒测量有机固体的导带和电子亲和势。

• 批准号: 61550005
• 负责人: UENO Nobuo
• 金额: $ 1.34万
• 依托单位: CHIBA UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1986
• 资助国家: 日本
• 起止时间: 1986 至 1987
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-61550005/
• 关键词: ELECTRON AFFINITY; ELECTRON SCATTERING; ELECTRON TRANSMISSION; PHOTORECEPTOR; 垂直配向膜; LB膜; 光伝導

LOW-ENERGY ELECTRON TRANSMISSION SPECTROMETER WAS CONSTRUCTED IN ORDER TO INVESTIGATE THE CONDUCTION BANDS OF ORGANIC THIN FILMS. THE GROUND STATE ENERGY OF THE QUASI-FREE ELECTRON Vo (MINUS OF THE ELECTRON AFFINITY E_A) IN CRYSTALLINE LONG-CHAIN ALKANES WAS DETERMINED TO BE 0.5 <plus-minus>0.1 eV. THE VALUE FOR THE MOLTEN STATE WAS FOUND TO BE NEGATIVE. FURTHER IN THE CRYSTALLINE STATE, EVIDENCE WAS FOUND FOR A DIRECT CORRESPONDENCE BETWEEN THE TRANSMISSION MAXIMA AND THE HIGH VALUE OF THE DENSITY OF STATES IN THE CONDUCTION BANDS.On THE OTHER HAND,THE E_A's OF POLYSTYRENE, POLY(2-VINYLPYRIDINE), POLY(2-VINYLNAPHTHALENE) AND POLY(N-VINYLCARBAZOLE) WERE DETERMINED TO BE 0.4 eV, 0.3 eV, 0.6 eV and 1.8 eV, respectively.

为了研究有机薄膜的导电带，建立了低能电子透射谱仪。确定了晶体长链烷烃中准自由电子Vo（负电子亲和能E_A）的基态能为0.5 <正负>0.1 eV。发现熔融状态的值为负。进一步在晶体状态下，发现了传输最大值与导带中状态密度的高值之间的直接对应关系的证据。聚苯乙烯、聚2-乙烯基吡啶、聚2-乙烯基萘和聚n -乙烯基咔唑的E_A分别为0.4 eV、0.3 eV、0.6 eV和1.8 eV。

项目成果

Nobuo UENO: Phys.Rev.B. 34. 6386-6393 (1986)

上野信夫：Phys.Rev.B。

Nobuo UENO: Physical Review B. 34. 6386-6393 (1986)

上野伸夫：物理评论 B.34.6386-6393 (1986)

上野信雄: 電子写真学会誌. 26. 231-239 (1987)

Nobuo Ueno：电子照相学会杂志 26. 231-239 (1987)。

NOBUO UENO: "ANOMALOUS ELECTRON TRANSMISSION THROUGH THE BAND GAP" IN PREPARATION FOR PUBLICATION.

NOBUO UENO：“带隙中的反常电子传输”正在准备出版。