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@article{Yan:2021:10.1038/s41467-021-23975-3,
author = {Yan, J and Rezasoltani, E and Azzouzi, M and Eisner, F and Nelson, J},
doi = {10.1038/s41467-021-23975-3},
journal = {Nature Communications},
title = {Influence of static disorder of charge transfer state on voltage loss in organic photovoltaics},
url = {http://dx.doi.org/10.1038/s41467-021-23975-3},
volume = {12},
year = {2021}
}

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TY  - JOUR
AB  - Spectroscopic measurements of charge transfer (CT) states provide valuable insight into the voltage losses in organic photovoltaics (OPVs). Correct interpretation of CT-state spectra depends on knowledge of the underlying broadening mechanisms, and the relative importance of molecular vibrational broadening and variations in the CT-state energy (static disorder). Here, we present a physical model, that obeys the principle of detailed balance between photon absorption and emission, of the impact of CT-state static disorder on voltage losses in OPVs. We demonstrate that neglect of CT-state disorder in the analysis of spectra may lead to incorrect estimation of voltage losses in OPV devices. We show, using measurements of polymer:non-fullerene blends of different composition, how our model can be used to infer variations in CT-state energy distribution that result from variations in film microstructure. This work highlights the potential impact of static disorder on the characteristics of disordered organic blend devices.
AU  - Yan,J
AU  - Rezasoltani,E
AU  - Azzouzi,M
AU  - Eisner,F
AU  - Nelson,J
DO  - 10.1038/s41467-021-23975-3
PY  - 2021///
SN  - 2041-1723
TI  - Influence of static disorder of charge transfer state on voltage loss in organic photovoltaics
T2  - Nature Communications
UR  - http://dx.doi.org/10.1038/s41467-021-23975-3
UR  - http://hdl.handle.net/10044/1/90063
VL  - 12
ER  -

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