Approaches toward efficient and stable electron extraction contact in organic photovoltaic cells: inspiration from the organic light-emitting diodes
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- Title
- Approaches toward efficient and stable electron extraction contact in organic photovoltaic cells: inspiration from the organic light-emitting diodes
- Authors
- Lee, TW; Kyung-Guen Lim; Dong-Hun Kim
- Date Issued
- 2010-03
- Publisher
- 대한금속재료학회
- Abstract
- Electron extraction contact in organic photovoltaic cells (OPVs) is very important to extract electrons from the active layer efficiently, improve the open-circuit voltage, and thus improve the power conversion efficiency. This paper reviews the various approaches to form an electron extraction contact for better power conversion efficiency and device lifetime, especially in organic bulk heterojunction photovoltaic cells based on conjugated polymer: fullerene blends. We discuss the roles of thin metal fluorides, a thin polymeric layer, and a solution processed metal oxide layer at the interface between the photoactive layer and the negative electrode for efficient and stable electron extraction contact in OPVs. In addition, we discuss the effects of various metallic negative electrodes in OPVs in terms of device efficiency and stability. Since these approaches are well established in organic light-emitting diodes, they can be exploited to accelerate research in device engineering to improve device performance.
- Keywords
- organic solar cells; bulk heterojunction solar cells; electron extraction layer; negative electrode; power conversion efficiency; HETEROJUNCTION SOLAR-CELLS; OPEN-CIRCUIT VOLTAGE; ELECTROLUMINESCENT DEVICES; QUANTUM EFFICIENCY; BUFFER LAYER; CATHODE; INJECTION; POLYFLUORENE; PERFORMANCE; IMPROVE
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/26423
- DOI
- 10.3365/eml.2010.03.041
- ISSN
- 1738-8090
- Article Type
- Article
- Citation
- ELECTRONIC MATERIALS LETTERS, vol. 6, no. 1, page. 41 - 50, 2010-03
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