2012/01/20 by Cheng‐Chia Tsai, Cheng-Chia Tsai, Tsai, Cheng-Chia +9
Biochemistry, Genetics and Molecular Biology · Engineering · Physics and Astronomy · #Advanced Fluorescence Microscopy Techniques #Molecular Junctions and Nanostructures #Organic Electronics and Photovoltaics #physics.optics
paper · pdf · doi:10.48550/arxiv.1201.4325
10 pages, 9 figures. Submitted to Optics Express
arxiv created 2012/01/20 · arxiv updated 2012/01/23
We describe surface patterning strategies that permit high photon-collection efficiency together with high carrier-collection efficiency in an ultra-thin planar heterojunction organic photovoltaic cell. Optimized designs reach up to 50% photon collection efficiency in a P3HT layer of only 30 nm, representing a 3- to 5-fold improvement over an unpatterned cell of the same thickness. We compare the enhancement of light confinement in the active layer with an ITO top layer for TE and TM polarized light, and demonstrate that the light absorption can increase by a factor of 2 due to a gap-plasmon mode in the active layer.