In this section
@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}
}
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 -
Jenny Nelson
Professor of Physics
1007, Huxley Building
South Kensington, London, SW7 2AZ