Boosting charge collection efficiency via large-area free-standing Ag/ZnO core-shell nanowire array electrodes |
| |
| Authors: | Yuyi Feng Paul Kim Clayton A. Nemitz Kwang-Dae Kim Yoonseok Park Karl Leo James Dorman Jonas Weickert Yongtian Wang Lukas Schmidt-Mende |
| |
| Affiliation: | 1. School of Optics and Photonics, Beijing Institute of Technology, 100081 Beijing, China;2. Department of Physics, University of Konstanz, 78467 Konstanz, Germany;3. Chemical and Biomolecular Engineering, University of California, 94720 Berkeley, USA;4. Department of Physics and Astronomy, University of North Carolina, Chapel Hill, 27516 NC, USA;5. Dresden Integrated Center for Applied Physics and Photonic Materials (IAPP), Dresden University of Technology, 01062 Dresden, Germany;6. Chemical Engineering Department, Louisiana State University, Baton Rouge, 70803 LA, USA |
| |
| Abstract: | Hybrid nanostructures, comprising of a metal core and a semiconductor shell layer, show great potential for a new generation of low-cost solar cells due to their unique electronic and optical properties. However, experimental results have fallen far short of the ultra-high efficiency(i.e. beyond Shockley-Queisser limit) predicted by theoretical simulations. This limits the commercial application of these materials. Here, a non-transparent organic solar cell with an array of Ag/ZnO nanowires has been experimentally fabricated to increase the internal quantum efficiency(IQE) by a factor of 2.5 compared to a planar counterpart. This result indicates a significant enhancement of charge collection efficiency due to the ultrafast Ag nanowire channels. This hybrid nanostructure can also serve as a perfect back reflector for semi-transparent solar cells, which can result in enhanced light absorption by a factor of 1.8 compared to the reference samples. The enhanced charge collection and light absorption can make these Ag/ZnO nanostructures available for the application of modern optoelectronic devices. |
| |
| Keywords: | Corresponding author. Vertically aligned nanowires Silver Core-shell Charge collection efficiency Light harvesting Semi-transparent organic solar cells |
| 本文献已被 CNKI ScienceDirect 等数据库收录！ |
|
