Effect of Metal-Reflection and Surface-Roughness Properties on Power-Conversion Efficiency for Polymer Photovoltaic Cells
- Authors
- Lee, Su-Hwan; Kim, Dal-Ho; Kim, Ji-Heon; Lee, Gon-Sub; Park, Jea-Gun
- Issue Date
- Dec-2009
- Publisher
- AMER CHEMICAL SOC
- Citation
- JOURNAL OF PHYSICAL CHEMISTRY C, v.113, no.52, pp.21915 - 21920
- Indexed
- SCIE
SCOPUS
- Journal Title
- JOURNAL OF PHYSICAL CHEMISTRY C
- Volume
- 113
- Number
- 52
- Start Page
- 21915
- End Page
- 21920
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/175813
- DOI
- 10.1021/jp9072813
- ISSN
- 1932-7447
- Abstract
- We investigated the effect of the reflectivity of various metal cathodes on the power-conversion efficiency (PCE) of organic photovoltaic (OPV) cells fabricated with a P3HT:PCBM blended layer. The reflectivity of the cathodes correlated well with the short-circuit Current (J(sc)) influenced by absorption of visible light reflected from the cathodes; that is, a higher reflectivity of the cathodes led to a higher J(sc). In addition, we analyzed how the surface roughness of a metal cathode influences the performance on the polymer PV cells. As a result, a higher reflectivity and a lower surface roughness of the metal cathodes gave a higher PCE. In addition, it was confirmed that the interface property between the metal cathodes and organic hole/exciton blocking layer strongly influences the PCE of OPV cells.
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