Journal
NANOTECHNOLOGY
Volume 19, Issue 42, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/0957-4484/19/42/424001
Keywords
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Funding
- German Federal Ministry of Education and Research (BMBF) [03IP602]
- German Research Council (DFG)
- Sachsische Aufbaubank
- Reiner Lemoine foundation
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In this paper we focus on the current status of organic solar cells based on small molecules. Since their discovery, much progress has been made, and the main steps are highlighted that led to the current state-of-the-art devices. However, organic solar cells still need to be improved further, and the main strategies for improving the power conversion efficiency, namely raising the open circuit voltage V-oc and increasing the short circuit current density J(sc), are discussed. In theory, power conversion efficiencies of around 15% should be possible with a single heterojunction; for higher efficiencies, stacked solar cell concepts have to be employed.
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