The Roles of Metallic Rectangular-Grating and Planar Anodes in the Photocarrier Generation and Transport of Organic Solar Cells
Title | The Roles of Metallic Rectangular-Grating and Planar Anodes in the Photocarrier Generation and Transport of Organic Solar Cells |
Publication Type | Journal Article |
Year of Publication | 2012 |
Authors | Sha, Wei E. I., Choy Wallace C. H., and Chew Weng Cho |
Journal | Applied Physics Letters |
Volume | 101 |
Issue | 22 |
Start Page | 223302 |
Date Published | 11/2012 |
Keywords | Carrier Transport, Multiphysics, Organic Solar Cells, Plasmonic Effects |
Abstract | A multiphysics study carries out on organic solar cells (OSCs) by solving Maxwell's and semiconductor equations simultaneously. By introducing a metallic rectangular-grating as the anode, surface plasmons are excited resulting in nonuniform exciton generation. Meanwhile, the internal E-field of plasmonic OSCs is modified with the modulated anode boundary. The plasmonic OSC improves 13% of short-circuit current but reduces 7% of fill factor (FF) compared to the standard one with a planar anode. The uneven photocarrier generation and transport by the grating anode are physical origins of the dropped FF. This work provides fundamental multiphysics modeling and understanding for plasmonic OSCs. |
URL | http://apl.aip.org/resource/1/applab/v101/i22/p223302_s1 |
DOI | 10.1063/1.4768236 |
Refereed Designation | Refereed |