Plasmonic Circular Nanostructure for Enhanced Light Absorption in Organic Solar Cells
Figure 1
(a) Schematic representation of a sample for a glass substrate/Cr film (2 nm)/Au film (47 nm)/Au concentric circular grating (50 nm). (b) An SEM image of the fabricated PCN sample. The grating ring width and pitch size of the pattern are 250 nm and 500 nm, respectively. (c) The optical setup for reflected intensity measurement. (d) Cross-sectional view of the thin-film OSCs architecture made of glass/ITO/Au circular grating/PEDOT:PSS/P3HT:PCBM/Ca/Al. A 50 nm-thick PCN was fabricated on the ITO anode layer using standard electron beam lithography and lift-off procedures.
