کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1866221 | 1037943 | 2008 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Exciton formation with interchain couplings in organic polymers
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موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک و نجوم (عمومی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Exciton formation with interchain couplings in organic polymers Exciton formation with interchain couplings in organic polymers](/preview/png/1866221.png)
چکیده انگلیسی
Based on the framework of the tight binding approach and the nonadiabatic dynamics, the formation of an exciton in inter-coupled polymer chains is studied. Both a localized exciton in one single chain and a spread exciton between chains are obtained. It is found that an excited electron-hole pair is more inclined to evolve into a localized exciton, and the long range Coulomb e–e interaction is favorable to the exciton formation. By calculating the formation time of an exciton, we show that the optical response time is faster in a dilute solution than that in a solid film of polymer molecules.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physics Letters A - Volume 372, Issue 14, 31 March 2008, Pages 2490–2495
Journal: Physics Letters A - Volume 372, Issue 14, 31 March 2008, Pages 2490–2495
نویسندگان
Kun Gao, Xiao-jing Liu, De-sheng Liu, Shi-jie Xie,