Light trapping in a 30-nm organic photovoltaic cell for efficient carrier collection and light absorption

• DOI: 10.48550/arxiv.1201.4325
• Publication Date: 2012-01-01
• Authors: Cheng‐Chia Tsai; Richard R. Grote; Ashish Banerjee; Richard M. Osgood; Dirk Englund
• Keywords: Active layer

We describe surface patterning strategies that permit high photon-collection efficiency together with carrier-collection in an ultra-thin planar heterojunction organic photovoltaic cell. Optimized designs reach up to 50% photon collection a P3HT layer of only 30 nm, representing 3- 5-fold improvement over unpatterned cell the same thickness. compare enhancement light confinement active ITO top for TE and TM polarized light, demonstrate absorption can increase by factor 2 due gap-plasmon mode layer.