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第三章:通過對分子動力學模擬得到的無定形體系mer-Alq3結(jié)構(gòu)為研究對象,用DFT方法計算了無定形mer-Alq3體系中分子的位點能,孤立軌道法計算了體系的電荷轉(zhuǎn)移積分,同時考慮了分子的長程相互作用/庫侖相互作用和偶極引起的極化作用對位點能的影響(極化位點能),又計算了極化位點能和沒有極化的位點能的關(guān)聯(lián)效應。結(jié)果說明了庫侖相互作用對位點能的影響比較大,表明這種弱相互作用不能忽視。還說明了考慮庫侖相互作用后,位點能的關(guān)聯(lián)效應更好,在計算電子和空穴遷移率時,不能忽視分子之間的極化/庫侖相互作用。最后用孤立軌道法計算了體系的電荷轉(zhuǎn)移積分,UFF力場得到的電子轉(zhuǎn)移積分比空穴轉(zhuǎn)移積分大,而Dreiding力場得到的空穴轉(zhuǎn)移積分比電子轉(zhuǎn)移積分大。 In chapter three,: the molecular dynamics simulation of amorphous system get mer-Alq3 structure as the object of study and using the DFT method to calculate the amorphous mer-Alq3 system molecules can sites, isolated orbital method is applied to calculate the charge transfer of the system, taking into consideration the molecular structure of interaction/coulomb interaction and dipole cause polarization effect of the influence of the site can (polarization sites), and calculated the polarization sites can and no polarization of the Correlation effect. The results show that the coulomb interaction on the site can influence , showed that the weak interaction can't ignore. Consider also that the coulomb interaction, site of the associated effect can better, in the calculation of electronic and hole mobility, cannot ignore the polarization between the molecules/coulomb interaction. The last with isolated orbital method is applied to calculate the charge transfer of system, UFF force get the electronic transfer point more than hole transfer large, and Dreiding force field of hole transfer more than by electronic transfer 。 麻煩修改一下上面翻譯的這段英文,謝謝 |
木蟲 (正式寫手)
| In chapter three, amorphous system mer-Alq3 structure, obtained by the molecular dynamics simulation, is used as the object of study. We have calculated molecules can sites of the amorphous mer-Alq3 system by DFT method, and the charge transfer of the system by isolated orbital method. When taking the molecular long-range interaction /coulomb interaction and the effect on the site energy (polarization sites) by polarization caused by dipole into consideration, we also have calculated the polarization sites energy and the correlation effect without polarization. The results show that the coulomb interaction has great effect on the site, so that the weak interaction can't be ignored. It also shows that after taking coulomb interaction into consideration, the associated effect can be better. When calculating electron and hole mobility, we cannot ignore the polarization between the molecules/coulomb interaction. We have calculated the charge transfer of system by isolated orbital method, wherein the electronic transfer integral obtained by UFF force is bigger than hole transfer integral, and the hole transfer integral obtained by Dreiding force field is bigger than the electron transfer integral. |
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