TY - GEN
T1 - Reduction of V oc induced by the electron-phonon scattering in GaAs and CH 3 NH 3 PbI 3
AU - Galvani, Benoit
AU - Delamarre, Amaury
AU - Suchet, Daniel
AU - Bescond, Marc
AU - Michelini, Fabienne
AU - Lannoo, Michel
AU - Sugyiama, Masakazu
AU - Even, Jacky
AU - Guillemoles, Jean François
AU - Cavassilas, Nicolas
N1 - Publisher Copyright:
© 2018 IEEE.
PY - 2018/11/26
Y1 - 2018/11/26
N2 - This work highlights the intrinsic modification of the electronic density-of-states due to electron-phonon scattering. Using a quantum model we show that, by broadening the density-of-states in the bandgap, the scattering changes the absorption/emission ratio and then some photovoltaic parameters like V oc . For the high mobility GaAs material we obtain a moderate V oc reduction of 4mV. In the highly polar CH 3 NH 3 PbI 3 perovskite material, even through the mobility is low, the broadening in the density-of-states is limited by the small phonon energy and then the V oc reduction remains inferior to 41mV.
AB - This work highlights the intrinsic modification of the electronic density-of-states due to electron-phonon scattering. Using a quantum model we show that, by broadening the density-of-states in the bandgap, the scattering changes the absorption/emission ratio and then some photovoltaic parameters like V oc . For the high mobility GaAs material we obtain a moderate V oc reduction of 4mV. In the highly polar CH 3 NH 3 PbI 3 perovskite material, even through the mobility is low, the broadening in the density-of-states is limited by the small phonon energy and then the V oc reduction remains inferior to 41mV.
U2 - 10.1109/PVSC.2018.8547650
DO - 10.1109/PVSC.2018.8547650
M3 - Conference contribution
AN - SCOPUS:85062096789
T3 - 2018 IEEE 7th World Conference on Photovoltaic Energy Conversion, WCPEC 2018 - A Joint Conference of 45th IEEE PVSC, 28th PVSEC and 34th EU PVSEC
SP - 1796
EP - 1799
BT - 2018 IEEE 7th World Conference on Photovoltaic Energy Conversion, WCPEC 2018 - A Joint Conference of 45th IEEE PVSC, 28th PVSEC and 34th EU PVSEC
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 7th IEEE World Conference on Photovoltaic Energy Conversion, WCPEC 2018
Y2 - 10 June 2018 through 15 June 2018
ER -