کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
78548 | 49336 | 2012 | 5 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Optical characterization of organic blend films integrating metallic nanoparticles Optical characterization of organic blend films integrating metallic nanoparticles](/preview/png/78548.png)
A study of plasmonic phenomena produced by silver nanoparticles embedded in a photoactive (poly-3-hexylthiophene):[6,6]-phenyl-C61-butyric acid methyl ester (P3HT:PCBM) bulk heterojunction is performed via spectrophotometric and Raman characterizations. An enhanced absorption of light is experimentally obtained in a 90 nm-thick P3HT:PCBM interpenetrated blend layer incorporating evaporated 5 nm-thick silver nanoparticles on glass/ITO substrate. An increase of Raman signal is observed and correlated to an increase of the electromagnetic field close to metallic nanoparticles. This is confirmed by Finite-Difference Time-Domain (FDTD) modeling considering an organized 2D-grating of ellipsoidal domes.This paper shows also that the use of relatively thick organic blend films as probe molecules upon plasmonic structures does not obscure the Raman response.
► Absorption enhancement is demonstrated inside a bulk heterojunction integrating silver nanoparticles.
► Raman signal enhancement is observed from a bulk heterojunction integrating silver nanoparticles.
► Plasmonic structures are modeled via a FDTD method.
► Electromagnetic field enhancement is highlighted.
Journal: Solar Energy Materials and Solar Cells - Volume 102, July 2012, Pages 31–35