2013/02/28 by Carsten Deibel, Daniel Rauh, Alexander Foertig · 27 citations
Chemistry · Engineering · Physics and Astronomy · #Atomic physics #Carrier lifetime #Charge (physics) #Charge carrier #Chemical physics #Chemistry #Electrical engineering #Limiting #Materials science #Molecular physics #Optoelectronics #Organic Electronics and Photovoltaics #Organic solar cell #Oxygen #Photovoltaic system #Physics #Polymer solar cell #Recombination #Silicon #Silicon and Solar Cell Technologies #Solar cell #Theory of solar cells #Thin-Film Transistor Technologies #Trapping #cond-mat.mtrl-sci
paper · pdf · doi:10.1063/1.4816720
published in Applied Physics Letters 103(4) (American Institute of Physics) · 4 pages, 3 figures. Corrected one reference and one technical term
arxiv created 2013/07/10 · openalex publication_date 2013/07/22 · arxiv updated 2013/07/26 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
The charge carrier dynamics of organic solar cells are strongly influenced by trapping and allow to draw conclusions on the loss mechanisms limiting the photovoltaic performance. In this study, we derive the recombination order Δ of mobile charge carriers. For annealed P3HT:PCBM solar cells, it allows us to pinpoint the dominant recombination of mobile with trapped charge carriers in tail states. While the characteristic tail state energy of about 40 meV rises to about 100 meV for 30 h oxygen exposure under illumination, Δ decreases only weakly from 1.70 to 1.62. This corresponds to a slight shift towards trap-assisted recombination.