【摘 要】
：
Polarization of a high-energy exciton in conjugated polymers is investigated theoretically by using an extended one-dimensional tight-binding Su-Schrieffer-Heeg
论文部分内容阅读
Polarization of a high-energy exciton in conjugated polymers is investigated theoretically by using an extended one-dimensional tight-binding Su-Schrieffer-Heeger(SSH)model.Under an exteal electric field,the reverse polarization of a high-energy exciton is obtained and the corresponding physical mechanism is analyzed.A critical field Ec is obtained,over which the polarization of the high-energy exciton will switch from negative to positive.In addition,by taking into account the effect of the non-degenerate confinement,we find that it is possible to realize reverse polarization through high energy photoexcitation in non-degenerate polymers.
其他文献
今年经济工作的首要任务就是要抓紧落实中央扩大内需的各项部署,保持经济平稳较快发展.
Based on the impact of a desired following speed and safe distance on driving behaviour,we establish a cooperative car-following model (CCFM).The dynamics analy
We investigate the single-mode condition and power fraction of an air cladding total inteal reflection (TIR)guided porous polymer THz fiber.It is shown that the
非洲制造业和轻工业不发达,有的国家连根针都不会制造,产品绝大多数依赖进口,价格昂贵,因此充满商机.
经济下行触底还需一段时日,民爆产品下游相关产业如水泥建材、房地产、基础设施建设投资等行业,部分企业已陷入因境,面临生存危机.
浙江是名副其实的外贸大省,对外依存度高达52%.受国际金融危机影响,浙江出口增速明显回落,2008年1～9月全省累计出口1178.9亿美元,比上年同期回落4.9个百分点.
摘 要：水可谓是万物复苏与生长必不可少的元素之一，而且是人们生产生活所必不可少的元素，因此必须要加强对水水质的监控和管理，一旦水质出现问题，将会威胁到人们的生命安全和生产生活的继续，因此，对于水质分析实验室也必须要加强质量的控制与管理，才能够对水质分析能够提供一个客观科学的准确的评价标准，为人们饮用放心水提供一个保障。所以说水质分析實验室的质量控制和管理是加强水环境治理的有效环节。因此，本文主要探
Using proper beam energy chirp and the undulator detuning effect,we propose a modified optical replica synthesizer scheme to characterize the temporal structure
The autonomy and property of atoms/molecules adsorbed on the surface of a microcantilever can be probed by measuring its resonance frequency shift due to adsorp
摘 要：随着信息技术的快速发展，电力系统中不断地融入了新型的电力技术，从而有效地提高了电力输送效率。变电检修班组的工作为电力设备的安全运行提供了重要的保障，使得电力设备始终处于一个高效、安全的运行状态。本文通过对精细化管理的要点进行深入分析，针对目前变电检修班组精细化管理中存在的问题提出了解决对策，有利于提高变电检修班组工作的实效性。 关键词：精细化管理；变电检修班组 1 前言 在社会经济发