화학공학소재연구정보센터
Solar Energy Materials and Solar Cells, Vol.101, 227-231, 2012
Enhancing current density using vertically oriented organic photovoltaics
We report a new organic photovoltaics (OPV) design, "a wrapped OPV", which can circumvent both challenges of short exciton diffusion length [1], and low charge carrier mobility 121 of organic semiconductors by orienting the OPV vertically, to capture; manage; guide and use all incident photons and therefore, generate higher current. Resonant light, on being transmitted into a wrapped OPV, makes multiple passes through the photoactive layer and is absorbed completely, thus achieving benefits of thick photoactive layer while maintaining its ultra-thin thickness requirement. The current density generated from a wrapped OPV is twice than that generated by a similar OPV with flat orientation. (C) 2012 Elsevier B.V. All rights reserved.