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Microscopic Calculation of the Electroabsorption Spectra of Polyacene Crystals

机译:并苯晶体电吸收光谱的显微计算

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摘要

A two-dimensional analogue of the Merrifield model of the coupling between the Frenkel and charge transfer (CT) excitations of a molecular crystal is applied for the calculation of the electroabsorption (EA) spectra of polyacene crystals. The approach is essentially non-empirical, with most of the necessary input data estimated either from theoretical calculations or from independent experiments. Good agreement between the calculated and experimental EA spectra lends credence to the model and allows us to draw conclusions concerning the accuracy of band gap estimates based on polarisation energy calculations. The conclusions may be potentially useful for other molecular crystals.
机译:分子晶体的Frenkel和电荷转移(CT)激发之间耦合的Merrifield模型的二维类似物用于计算多并苯晶体的电吸收(EA)光谱。这种方法本质上是非经验的,大多数必要的输入数据都是根据理论计算或独立实验估算得出的。计算出的EA光谱和实验EA光谱之间的良好一致性为该模型提供了依据,并使我们能够得出基于极化能量计算的带隙估计精度的结论。该结论可能对其他分子晶体可能有用。

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