کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1675779 | 1008984 | 2008 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Charge photogeneration and recombination in poly[2-methoxy-5-(2â²-ethyl-hexoxy-p-phenylene vinylene]:fullerene composite films studied by photocurrent response
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فناوری نانو (نانو تکنولوژی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Charge photogeneration and recombination in poly[2-methoxy-5-(2â²-ethyl-hexoxy-p-phenylene vinylene]:fullerene composite films studied by photocurrent response Charge photogeneration and recombination in poly[2-methoxy-5-(2â²-ethyl-hexoxy-p-phenylene vinylene]:fullerene composite films studied by photocurrent response](/preview/png/1675779.png)
چکیده انگلیسی
The photocurrent spectral responses of poly[2-methoxy-5-(2â²-ethyl-hexoxy-p-phenylene vinylene]:fullerene (C60) composites are measured as a function of C60 concentration. At low concentration, the relationship between the external quantum efficiency (EQE) and absorption spectra is exhibited as the strengthened antibatic effect, and the EQE of the composite devices declines with increasing concentration of C60. At higher concentration, however, the maximum EQE gradually coincides with the absorption peak (symbatic response) and the EQE of composite devices begins to increase with increasing C60 concentration. It is proposed that at low concentration, dopant C60 increases the self-absorption rate of composite films, and charge trapping by C60 molecules causes the loss of efficiency. At high C60 concentration, the large-scale aggregations in composite films build pathways for charge carrier transport to respective electrodes, inhibiting the self-absorption effect and charge recombination on C60.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Thin Solid Films - Volume 516, Issue 6, 30 January 2008, Pages 1142-1146
Journal: Thin Solid Films - Volume 516, Issue 6, 30 January 2008, Pages 1142-1146
نویسندگان
Hui Jin Hui Jin, Yan-Bing Hou, Xian-Guo Meng, Feng Teng Feng Teng,