How does energy filtering improve quantum-dot based photovoltaic devices
Résumé
We investigate how energy filtering manifests and operates inside a quantum dot-based photovoltaic device by
means of the Green’s function formalism. We find that the filtering process increases both charge and heat currents
produced in the device. However, currents surprisingly show minima when the filter energy is equal to the absorbing dot
energy due to a reduced carrier photogeneration at resonance.