Projekteja vuodessa
Abstrakti
Reducing non-radiative recombination is key to achieve high fill factors (FFs) in organic solar cells. While it is generally accepted that recombination proceeds via charge transfer (CT) states at the donor:acceptor interface, the underlying principles that dictate the decay kinetics of these CT states are not yet well understood. Here, a study on the effect of energetic disorder is presented. Based on a data set of 10 representative donor:acceptor blends, clear correlations between disorder, the recombination coefficient of free charge carriers, and the non-radiative voltage loss are found. It is suggested that a narrower distribution of CT energies leads to a longer CT decay time and thus reduces non-radiative losses. This leads to a simultaneous improvement of the FF and open circuit voltage and highlights the importance of having materials with low energetic disorder on the way to the commercialisation of organic photovoltaics.
Alkuperäiskieli | Englanti |
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Artikkeli | 2203576 |
Julkaisu | Advanced Energy Materials |
Vuosikerta | 13 |
Numero | 8 |
DOI - pysyväislinkit | |
Tila | Julkaistu - 24 helmik. 2023 |
OKM-julkaisutyyppi | A1 Julkaistu artikkeli, soviteltu |
Sormenjälki
Sukella tutkimusaiheisiin 'Relationship between Energetic Disorder and Reduced Recombination of Free Carriers in Organic Solar Cells'. Ne muodostavat yhdessä ainutlaatuisen sormenjäljen.Projektit
- 1 Päättynyt
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ReMorphOPV: Recombination in Organic Photovoltaics: Impact of Morphology and Long-Range Non-Equilibrium Transport
Wilken, S. (Vastuullinen tutkija) & Österbacka, R. (CoI)
15/01/19 → 21/02/21
Projekti: EU