Cascade organic solar cells with energy-level-matched three photon-harvesting layers
SCIE
SCOPUS
- Title
- Cascade organic solar cells with energy-level-matched three photon-harvesting layers
- Authors
- Sim, M; Kim, JS; Shim, C; Cho, K
- Date Issued
- 2013-02-05
- Publisher
- ELSEVIER SCIENCE BV
- Abstract
- The performances of organic photovoltaic cells were improved by matching the energy levels of three photon-harvesting layers with distinct light absorption spectra. Pentacene, phthalocyanine, and C-70, which have shallow, intermediate, and deep energy levels, respectively, were introduced as photon harvesting layers to form a cascade structure and secure appropriate band offsets at all interfaces. This architecture yielded higher values of the open-circuit voltage and short-circuit current density than a standard bilayer structure based on pentacene and C-70. A device prepared with metal-free phthalocyanine performed better than a device with Cu phthalocyanine because the energy levels were more appropriately tuned. (C) 2012 Elsevier B.V. All rights reserved.
- Keywords
- LOW-BANDGAP POLYMER
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/15629
- DOI
- 10.1016/J.CPLETT.2012.11.087
- ISSN
- 0009-2614
- Article Type
- Article
- Citation
- Chemical Physics Letters, vol. 557, no. 5, page. 88 - 91, 2013-02-05
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