Journal
ACS ENERGY LETTERS
Volume 7, Issue 6, Pages 2156-2164Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsenergylett.2c00303
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Funding
- German Research Foundation (DFG)
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This Perspective focuses on the energetic CT disorder in organic solar cells and its impact on performance, including dynamic and static broadening.
Organic bulk heterojunction solar cells utilize the donor-acceptor approach to amplify the charge photogeneration via interfacial charge-transfer (CT) states. A detailed modeling of the CT energetics is required to understand the performance limitations of organic photovoltaic devices today. However, general questions regarding the CT state are still under dispute. In this Perspective, we want to focus on energetic CT disorder, which can be separated into dynamic and static broadening. Both contributions uniquely affect the solar cell properties, and we will highlight current research results regarding their dominance over the CT state energy.
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