Evaluation of work functions of organic semiconductors and electronic structures of organic/metal interfaces
评估有机半导体的功函数和有机/金属界面的电子结构
基本信息
- 批准号:10440209
- 负责人:
- 金额:$ 8.32万
- 依托单位:
- 依托单位国家:日本
- 项目类别:Grant-in-Aid for Scientific Research (B).
- 财政年份:1998
- 资助国家:日本
- 起止时间:1998 至 2000
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
Energy structures of molecular semiconductors are investigated in air on the basis of the Kelvin probe (KP) method. Vacuum sublimed films of phthalocyanines (p-type), porphyrins (p- and n-type) and perylene derivative (n-type) contacting metals form ideal Schottky-barriers. A common work function of 4.8±0.05 eV for p-type molecular semiconductors and 4.1-4.3 eV for n-type ones are evaluated from the Schottky-Mott rule. Work function values measured directly with the KP method strongly dependent on the metal used as substrate. This is ascribed to nonalignment of Fermi levels between a molecular solid and metal under the open-circuit situation of the KP configuration. Correction for the Fermi energy differences reduces the metal dependencies. Possible reasons for the nonalignment of Fermi levels are discussed in connection with incorporation of O_2 and/or H_2O into molecular semiconductors. Similarly, the Schottky-Mott rule has been successfully applied to evaluating work functions of va … More rious poly (3-arylthiophenes) (PATs). Edges of the valence and conduction bands of the PAT films are estimated from the onset potentials for anodic p-doping and cathodic n-doping of the polymer films. On these bases electronic structures of the PAT films and their interfaces with metals in air are depicted.Apparent mobilities of positive charge carriers in a poly [(ethoxypropylsilanylene) quinqe-(2,5-thienylene)] (MS5T-OEt) film are evaluated. The mobility decreases monotonously with the increase in doping level up to a few percents, in contrast to four order-of-magnitude increase of mobilities reported earlier for the poly (3-methylthiophene) (PMT) film. This indicates that the two kinds of diamagnetic species, cation radical π-dimers in the MS5T-OEt film and bipolarons in the PMT, are related to the electrical conduction in completely different manners. An in situ ESR study performed to characterize charge-carrying species in the MS5T-OEt film demonstrates that there are oligothienylene segments where polarons are isolated so as not to form π-dimers. Less
用开尔文探针(KP)方法研究了空气中分子半导体的能量结构。酞菁(p型)、卟啉(p型和n型)和二萘嵌苯衍生物(n型)与金属接触的真空升华膜形成理想的肖特基势垒。根据Schottky-Mott规则,计算出p型分子半导体的功函数为4.8± 0.05eV,n型分子半导体的功函数为4.1- 4.3eV。直接用KP方法测量的功函数值强烈依赖于用作基底的金属。这是由于在KP组态开路情况下,分子固体和金属之间的费米能级不对齐。修正费米能差降低了金属依赖性。本文讨论了在分子半导体中掺入O_2和/或H_2O时费米能级不对准的可能原因。类似地,Schottky-Mott规则已成功地应用于评估VA的功函数。 ...更多信息 聚(3-芳基噻吩)(PATs)。PAT膜的价带和导带的边缘估计从阳极p-掺杂和阴极n-掺杂的聚合物膜的起始电位。在此基础上,描述了PAT膜及其与金属界面的电子结构,并计算了聚[(乙氧基丙基硅撑)quinqe-(2,5-噻吩撑)](MS 5 T-OEt)膜中正电荷载流子的表观迁移率。的迁移率单调下降,在掺杂水平的增加到几个百分点,在四个数量级的增加迁移率的聚(3-甲基噻吩)(PMT)膜的早期报道相反。这表明两种抗磁性物质,MS 5 T-OEt膜中的阳离子自由基π-二聚体和PMT中的双极化子,以完全不同的方式与导电相关。进行原位ESR研究以表征MS 5 T-OEt膜中的电荷携带物质,表明存在低聚噻吩亚基片段,其中极化子被隔离以不形成π-二聚体。少
项目成果
期刊论文数量(52)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Y.Harima: "Transport and in situ ESR studies on polymer film composed of quinquethiophenes bridged monosilanylene"Synth.Met.. 113. 173-183 (2000)
Y.Harima:“由五苯噻吩桥联单硅烷基组成的聚合物薄膜的传输和原位 ESR 研究”Synth.Met.. 113. 173-183 (2000)
- DOI:
- 发表时间:
- 期刊:
- 影响因子:0
- 作者:
- 通讯作者:
H.Tang: "Chronocoulometric determination of doping levels of polythiophene : influences of overoxidation and capacitive processes"Synth.Met.. 110. 105-113 (2000)
H.Tang:“聚噻吩掺杂水平的计时库仑测定:过氧化和电容过程的影响”Synth.Met.. 110. 105-113 (2000)
- DOI:
- 发表时间:
- 期刊:
- 影响因子:0
- 作者:
- 通讯作者:
L.Zhu: "Electrochemical oxidation of thienylene-silanylene copolymer films in different electrolyte solutions"Electrochim.Acta. 45. 2203-2210 (2000)
L.Zhu:“不同电解质溶液中噻吩基-硅烷基共聚物薄膜的电化学氧化”Electrochim.Acta。
- DOI:
- 发表时间:
- 期刊:
- 影响因子:0
- 作者:
- 通讯作者:
Y.Harima: "Transport and in situ ESR studies on polymer film composed of quinquethiophenes bridged by monosilanylene units"Synth.Met.. 113. 173-183 (2000)
Y.Harima:“由单硅基单元桥联的五喹噻吩组成的聚合物薄膜的传输和原位 ESR 研究”Synth.Met.. 113. 173-183 (2000)
- DOI:
- 发表时间:
- 期刊:
- 影响因子:0
- 作者:
- 通讯作者:
Y.Harima: "Energy structures of molecules semiconductors contacting metals under air studied by the diffusion potential measurement and the kelson prove technique"Thin Solid Films. 366. 237-248 (2000)
Y.Harima:“通过扩散电势测量和凯尔森证明技术研究空气下接触金属的分子半导体的能量结构”固体薄膜。
- DOI:
- 发表时间:
- 期刊:
- 影响因子:0
- 作者:
- 通讯作者:
{{
item.title }}
{{ item.translation_title }}
- DOI:
{{ item.doi }} - 发表时间:
{{ item.publish_year }} - 期刊:
- 影响因子:{{ item.factor }}
- 作者:
{{ item.authors }} - 通讯作者:
{{ item.author }}
数据更新时间:{{ journalArticles.updateTime }}
{{ item.title }}
- 作者:
{{ item.author }}
数据更新时间:{{ monograph.updateTime }}
{{ item.title }}
- 作者:
{{ item.author }}
数据更新时间:{{ sciAawards.updateTime }}
{{ item.title }}
- 作者:
{{ item.author }}
数据更新时间:{{ conferencePapers.updateTime }}
{{ item.title }}
- 作者:
{{ item.author }}
数据更新时间:{{ patent.updateTime }}
YAMASHITA Kazuo其他文献
YAMASHITA Kazuo的其他文献
{{
item.title }}
{{ item.translation_title }}
- DOI:
{{ item.doi }} - 发表时间:
{{ item.publish_year }} - 期刊:
- 影响因子:{{ item.factor }}
- 作者:
{{ item.authors }} - 通讯作者:
{{ item.author }}
{{ truncateString('YAMASHITA Kazuo', 18)}}的其他基金
Interdisciplinary study on folk religion texts in Modern China
近代中国民间宗教文本的跨学科研究
- 批准号:
23320076 - 财政年份:2011
- 资助金额:
$ 8.32万 - 项目类别:
Grant-in-Aid for Scientific Research (B)
Developing the Sensitivity and Creativity Training Program using Emotional Attunement to infants and children
利用婴儿和儿童的情感协调制定敏感性和创造力训练计划
- 批准号:
19530627 - 财政年份:2007
- 资助金额:
$ 8.32万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
相似海外基金
Housing Support Model for The Elderly Living Alone Based on Community Social Work Function
基于社区社会工作功能的独居老人住房保障模式
- 批准号:
23K12669 - 财政年份:2023
- 资助金额:
$ 8.32万 - 项目类别:
Grant-in-Aid for Early-Career Scientists
Alkyne hydrogenation using alloy nanoparticles on prerovskite supports with low work function
在具有低逸出功的预洛夫钛矿载体上使用合金纳米粒子进行炔烃氢化
- 批准号:
23K13600 - 财政年份:2023
- 资助金额:
$ 8.32万 - 项目类别:
Grant-in-Aid for Early-Career Scientists
Development of an electron work function-based novel methodology for designing advanced tribo-materials
开发基于电子逸出功的新颖方法来设计先进摩擦材料
- 批准号:
RGPIN-2018-06683 - 财政年份:2022
- 资助金额:
$ 8.32万 - 项目类别:
Discovery Grants Program - Individual
Development of an electron work function-based novel methodology for designing advanced tribo-materials
开发基于电子逸出功的新颖方法来设计先进摩擦材料
- 批准号:
RGPIN-2018-06683 - 财政年份:2021
- 资助金额:
$ 8.32万 - 项目类别:
Discovery Grants Program - Individual
Development of an electron work function-based novel methodology for designing advanced tribo-materials
开发基于电子功函数的新颖方法来设计先进摩擦材料
- 批准号:
RGPIN-2018-06683 - 财政年份:2020
- 资助金额:
$ 8.32万 - 项目类别:
Discovery Grants Program - Individual
High work function polymeric electrodes for Ohmic contact and efficient photoelectric conversion
用于欧姆接触和高效光电转换的高功函数聚合物电极
- 批准号:
20K15358 - 财政年份:2020
- 资助金额:
$ 8.32万 - 项目类别:
Grant-in-Aid for Early-Career Scientists
Development of an electron work function-based novel methodology for designing advanced tribo-materials
开发基于电子功函数的新颖方法来设计先进摩擦材料
- 批准号:
RGPIN-2018-06683 - 财政年份:2019
- 资助金额:
$ 8.32万 - 项目类别:
Discovery Grants Program - Individual
Work function measurements of printed silver electrode for control of metal/semiconductor contact performance
用于控制金属/半导体接触性能的印刷银电极的功函数测量
- 批准号:
18K14131 - 财政年份:2018
- 资助金额:
$ 8.32万 - 项目类别:
Grant-in-Aid for Early-Career Scientists
Manipulating and Exploiting Lattice Strain as a Novel Platform to Tune the Surface Work Function of Metallic Nanocatalysts
操纵和利用晶格应变作为调整金属纳米催化剂表面功函数的新平台
- 批准号:
1808383 - 财政年份:2018
- 资助金额:
$ 8.32万 - 项目类别:
Standard Grant
Development of an electron work function-based novel methodology for designing advanced tribo-materials
开发基于电子功函数的新颖方法来设计先进摩擦材料
- 批准号:
RGPIN-2018-06683 - 财政年份:2018
- 资助金额:
$ 8.32万 - 项目类别:
Discovery Grants Program - Individual