Electron transport in N,N’‐bis(2‐phenethyl)‐perylene‐3,4: 9,10‐bis(dicarboximide)
Electron transport in N,N’‐bis(2‐phenethyl)‐perylene‐3,4: 9,10‐bis(dicarboximide)
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N,N-双(2-苯乙基)-苝-3,4: 9,10-双(二甲酰亚胺)中的电子传输
DOI：
10.1063/1.353339
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发表时间：
1993
影响因子：
3.2
通讯作者：
P. Borsenberger
中科院分区：
文献类型：
--
作者：
E. H. Magin;P. Borsenberger
通过飞行时间技术，在标题化合物的气相沉积薄膜中测量了电子迁移率。结果与巴斯勒及其同事对紊乱形式主义的预测以及基于极化子形成的模型进行了比较。结果表明，跳位能的波动是影响活化能的主要因素。然而，为了使实验和形式主义的预测保持一致，还需要一个额外的激活源。这种激活的来源被认为是由于极化子的形成或捕获。确定跳位流形的宽度σ为0.080 eV，位置无序参数Σ为1.0。用一个只通过极化子位移发生输运的模型来解释这些结果，导致与迁移率的温度和场依赖关系不一致。
By time‐of‐flight techniques, electron mobilities have been measured in vapor deposited films of the title compound. The results were compared to predictions of the disorder formalism, due to Bassler and co‐workers, and models based on polaron formation. The results lead to the conclusion that fluctuations in hopping site energies are the major contribution to the activation energy. For consistency between experiment and predictions of the formalism, however, an additional source of activation is required. The source of this activation is believed due to either polaron formation or trapping. The width of the hopping site manifold, σ, is determined as 0.080 eV and the positional disorder parameter, Σ, as 1.0. The interpretation of these results by a model in which transport occurs only by polaron displacement leads to inconsistencies with both the temperature and field dependencies of the mobility.