请再帮我翻译一段可以啊?At higher temperatures, due to the reduced effective bandwidths,the energy gained by localizing the charge carriers onsingle molecules can become comparable in magnitude to theenergy gained by charge delocalization,
来源:学生作业帮助网 编辑:六六作业网 时间:2024/11/08 07:48:13
请再帮我翻译一段可以啊?At higher temperatures, due to the reduced effective bandwidths,the energy gained by localizing the charge carriers onsingle molecules can become comparable in magnitude to theenergy gained by charge delocalization,
请再帮我翻译一段可以啊?
At higher temperatures, due to the reduced effective bandwidths,
the energy gained by localizing the charge carriers on
single molecules can become comparable in magnitude to the
energy gained by charge delocalization, thereby leading to
polaron formation. The polaron binding energy comes from local
geometric relaxations and increased polarization of the surrounding
medium. Clearly, localization occurs in disordered
materials that are in the presence of energetic disorder (that leads
to a distribution of energies for the HOMO and LUMO levels
as a result of changes in the conformation and/or nature of the
environment of the individual molecules) and/or positional
disorder (associated with fluctuations in the relative positions
of the interacting molecules).7 When localization sets in,
transport operates via a hopping mechanism in which charges
jump from site to site. Since organics-based devices typically
operate at room temperature and incorporate inherently disordered
materials, the hopping mechanism is expected to govern
charge transport in most cases.
The theoretical description of charge transport via hopping
in organic conjugated materials has been pioneered by the group
of Ba¨ssler and co-workers8 and has received a great deal of
interest over the years. In many instances, earlier studies (i)
describe the system of interest as a model lattice, thereby
ignoring the actual morphology of the materials; (ii) estimate
the transfer rate between adjacent sites from simple expressions
(generally based on the Miller-Abrahams model)9 that neglect
polaronic effects and require input parameters that are not
explicitly calculated and have to be guessed or fitted from
experimental data10-13 (in addition, these models overlook the
high sensitivity of the transfer rate with respect to the relative
positions of the interacting molecules); and (iii) evaluate charge
propagation via Monte Carlo approaches or by solving master
equations and provide in this way a macroscopic description
of charge transport. Despite the fact that the exact chemical
structures and the actual relative positions of the interacting units
are not explicitly taken into account, these simulations have
proven very useful; they have allowed to rationalize on a
phenomenological basis the impact of multiple parameters on
charge mobilities, in particular the role of energetic and
positional disorder (often referred to as diagonal and nondiagonal
disorder, respectively) and of applied electric field. More recent
studies have also addressed the influence of charge carrier
density11,12 or of the phase separation pattern in organic blends.
请再帮我翻译一段可以啊?At higher temperatures, due to the reduced effective bandwidths,the energy gained by localizing the charge carriers onsingle molecules can become comparable in magnitude to theenergy gained by charge delocalization,
在较高的温度,由于减少了有效的带宽,
能源所取得的本地化负责运营商对
单分子可以成为可比的幅度向
能源所取得的电荷离域,从而导致
极化子的形成.极化子具有约束力的能源来自于当地
几何放宽和增加的两极分化周边
中等.显然,本地化发生在紊乱
材料是在该律师在场的充满活力的障碍(即导致
一个分布的精力,为人类和各级lumo
作为一个结果的变化,在构象和/或性质的
环境的个别分子)和/或位置
障碍(与波动的相对位置
该相互作用的分子) 0.7时,套在本地化,
运输的运作通过一个跳频机制,其中收费
跳转的网站.由于有机物为基础的装置通常
运作,在室温下,把内在的紊乱
材料,跳跃式的机制,可望执政
电荷传输在大多数情况下.
该理论描述的电荷传输通过跳频
在有机共轭材料已率先由本集团
广管局§ ssler和合作,workers8 ,并已收到了大量的
有兴趣多年来.在许多情况下,早先的研究(一)
描述系统的利益,作为一个典范的格子,从而
不顾实际形态的材料; (二)估计
传输速率之间的相邻地盘,从简单的表达
(一般的基础上,米勒-亚伯拉罕模型) 9忽视
polaronic的影响,并要求输入参数不属于
明确计算,并已被猜中或装上从
实验data10 - 13 (此外,这些模型忽视
高灵敏度的传输速率方面的相对
的立场,相互作用的分子) ; (三)负责评估
繁殖通过蒙特卡罗方法或解决了硕士
方程,并提供在这样一个宏观的描述
收费交通工具.尽管事实是确切的化学
结构和实际的相对位置的互动单位
没有明确考虑到,这些模拟
证明非常有用的;允许他们有合理化对一
现象学的基础上的影响,多个参数对
负责迁移,特别是充满活力的作用和
位置错乱(通常称为角和非对
无序,分别)和应用电场.较近期的
研究还讨论了影响承运人负责
density11 ,12 ,或相分离的模式在有机共混物
原文:At higher temperatures, due to the reduced effective bandwidths, the energy gained by localizing the charge carriers on single molecules can become comparable in magnitude to the energy gained by c...
全部展开
原文:At higher temperatures, due to the reduced effective bandwidths, the energy gained by localizing the charge carriers on single molecules can become comparable in magnitude to the energy gained by chargedelocalization,thereby leading to polaron formation. The polaron binding energy comes from local geometric relaxations and increased polarization of the surrounding
medium.
翻译:在较高的温度,由于减少了有效的带宽,能源所取得的本地化负责运营商对单分子可以成为可比的幅度,以能源所取得的电荷离域,从而导致极化子的形成。极化子具有约束力的能源来自于局部几何放宽并增加极化的周围介质。
收起
在较高的温度, 适当的到那减少了有效的带宽,
能源藉由本土化费用运送者得到在
独身者分子能在大小方面变成可比较到那
能源藉着费用 delocalization 得到, 藉此带领到
偏离子形成。 偏离子装订能源来自地方
几何学的放松和增加的偏极化那环境
媒体。 清楚地, 局限发生在混乱的
在精力充沛的混乱之前的材料 (哪一领引
对能源的...
全部展开
在较高的温度, 适当的到那减少了有效的带宽,
能源藉由本土化费用运送者得到在
独身者分子能在大小方面变成可比较到那
能源藉着费用 delocalization 得到, 藉此带领到
偏离子形成。 偏离子装订能源来自地方
几何学的放松和增加的偏极化那环境
媒体。 清楚地, 局限发生在混乱的
在精力充沛的混乱之前的材料 (哪一领引
对能源的分配为 HOMO 和 LUMO 水平
变化的结果在构造中以及/ 或性质那
个体分子的环境) 以及/ 或位置的
混乱 (在亲戚中有变动联合位置
互相影响分子). 当局限组在,
运输系统经由一个单脚跳机制操作在哪一个费用
跳跃从位置到位置。 自从以有机为基础的装置以后典型地
在室温操作而且合并固有混乱
材料, 单脚跳机制预期统治
在大部份的情形下的费用运输系统。
费用运输系统的理论上的描述经由单脚跳
在有机的结合材料中有是提倡被那小组
Ba ¨ ssler 和共工人 8 而且有被一般承认的很多的
兴趣年以来。 在多数中例证, 早的研究 (i)
把重要系统说成是一模型格子, 藉此
不理睬材料的真实的形态学; (ii) 估计
移动率在毗连的之间位置从简单的表达
(通常基于那米勒-亚伯拉罕的模型)9 哪一疏忽
polaronic 产生并且需要输入叁数哪一是不
明确地有计划的而且必须是猜测或适合从
实验的数据 10-13(除此之外, 这些模型俯看那
移动的高敏感率与尊敬到那亲戚
互相影响分子的位置); 而且 (iii) 评估费用
增殖经由蒙地卡罗方法或藉由解决主人
相等而且这样提供巨观描述
费用运输系统。 尽管事实哪一精确人化学的
结构和真实的亲戚位置互相影响单位
不明确地被考虑, 这些模拟有
证明非常有用的; 他们有允许合理化在一之上
现象学的基础多个叁数的冲击在
费用可动性, 在个别项目中角色精力充沛的和
位置的混乱 (时常提及如对角线的和非对角线的
混乱, 分别地) 和应用的电场。 更最近的
研究有也向那演说影响力费用运送者
密度 11,12 或状态分离式样在有机的混和。
收起