Theory of Charge Transport in Molecularly Doped Solids

分子掺杂固体中的电荷传输理论

• 批准号: 9614848
• 负责人: V. Kenkre
• 金额: $ 18.3万
• 依托单位: University of New Mexico
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1997
• 资助国家: 美国
• 起止时间: 1997-02-15 至 2000-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9614848&HistoricalAwards=false
• 关键词: Theory; Charge; Transport; Molecularly; Doped

9614848 Kenkre Ongoing developments in xerography and in electroluminiscent display devices require a detailed understanding of charge transport in molecularly doped solids. This grant, part of a collaboration between two groups at the University of New Mexico and at the University of Missouri-Rolla is to support research on this subject. The primary issues, to be addressed are the effects of disorder and high electric fields on carrier motion in polymeric films. The specific projects include, inter alia, the identification of the charge carriers, study of the field induced traps, determination of the time and length scales for the equilibration of carriers following photoexcitation and several other issues necessary to clarify the physical mechanism behind the phenomena. %%% Xerography and electroluminescent display devices use doped molecular solids (for example polymer films). The basic physical phenomena involving photoconduction, i. e. charging and currents following absorption of light, contains several unanswered questions. This grant is to support theoretical work to elucidate the fundamental processes which account for the phenomena, and possibly to help design materials which are better photoconductors. The grant is being awarded to two groups, one at the University of New Mexico and another at the University of Missouri- Rolla for a collaborative enterprise.

静电照相和电致发光显示设备的持续发展需要对分子掺杂固体中的电荷输运有详细的了解。这项拨款是新墨西哥大学和密苏里大学罗拉分校两个小组合作的一部分，旨在支持这一主题的研究。要解决的主要问题是无序和高电场对聚合物薄膜中载流子运动的影响。具体项目包括，除其他外，电荷载流子的识别，场诱导陷阱的研究，确定光激发后载流子平衡的时间和长度尺度，以及澄清现象背后的物理机制所必需的几个其他问题。静电照相和电致发光显示设备使用掺杂的分子固体（例如聚合物薄膜）。涉及光传导的基本物理现象，即光吸收后的充电和电流，包含几个悬而未决的问题。这项资助是为了支持理论工作，以阐明解释这种现象的基本过程，并可能帮助设计更好的光导体材料。这笔资金将被授予两个小组，一个在新墨西哥大学，另一个在密苏里大学罗拉分校，用于合作企业。