Charge carrier recombination dynamics in perovskite and polymer solar cells
- Time-delayed collection field experiments are applied to planar organometal halide perovskite (CH3NH3PbI3) based solar cells to investigate charge carrier recombination in a fully working solar cell at the nanosecond to microsecond time scale. Recombination of mobile (extractable) charges is shown to follow second-order recombination dynamics for all fluences and time scales tested. Most importantly, the bimolecular recombination coefficient is found to be time-dependent, with an initial value of ca. 10(-9) cm(3)/s and a progressive reduction within the first tens of nanoseconds. Comparison to the prototypical organic bulk heterojunction device PTB7:PC71BM yields important differences with regard to the mechanism and time scale of free carrier recombination. (C) 2016 AIP Publishing LLC.
| Author details: | Andreas Paulke, Samuel D. Stranks, Juliane Kniepert, Jona KurpiersORCiDGND, Christian Michael WolffORCiDGND, Natalie Schön, Henry J. Snaith, Thomas J. K. Brenner, Dieter NeherORCiDGND |
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| DOI: | https://doi.org/10.1063/1.4944044 |
| ISSN: | 0003-6951 |
| ISSN: | 1077-3118 |
| Title of parent work (English): | Applied physics letters |
| Publisher: | American Institute of Physics |
| Place of publishing: | Melville |
| Publication type: | Article |
| Language: | English |
| Year of first publication: | 2016 |
| Publication year: | 2016 |
| Release date: | 2020/03/22 |
| Volume: | 108 |
| Number of pages: | 5 |
| First page: | 252 |
| Last Page: | 262 |
| Funding institution: | Helmholtz Energy Alliance for Hybrid Photovoltaics; Joint Graduate School HyPerCells of the University of Potsdam; Helmholtz-Zentrum Berlin; German Science Foundation (DFG) within the priority program "Elementary Processes of Organic Photovoltaics" (SPP 1355); European Union [604032] |
| Organizational units: | Mathematisch-Naturwissenschaftliche Fakultät / Institut für Physik und Astronomie |
| Peer review: | Referiert |
