Impact of quantized vibrations on the efficiency of interfacial charge separation in photovoltaic devices
arXiv:1407.5596 · doi:10.1103/PhysRevB.91.041107
Abstract
We demonstrate that charge separation at donor-acceptor interfaces is a complex process that is controlled by the combined action of Coulomb binding for electron-hole pairs and partial relaxation due to quantized phonons. A joint electron-vibration quantum dynamical study reveals that high energy vibrations sensitively tune the charge transfer probability as a function of time and injection energy, due to polaron formation. These results have bearings for the optimization of energy transfer both in organic and quantum dot photovoltaics, as well as in biological light harvesting complexes.
5 pages, 3 figures. v2 contains additional discussion of experiments, and extra physical motivation
References in corpus (3)
Cited by in corpus (11)
- Phonon-Assisted Ultrafast Charge Separation in a Realistic PCBM Aggregate
- Ultrafast dynamics of photoinduced charge separation
- Origin of space-separated charges in photoexcited organic heterojunctions on ultrafast time scales
- Dynamics of a Qubit in a High-Impedance Transmission Line from a Bath Perspective
- Coherent exciton dynamics in a dissipative environment maintained by an off-resonant vibrational mode
- Influence of static disorder and polaronic band formation on interfacial electron transfer in organic photovoltaic devices
- Polaronic quantum diffusion in dynamic localization regime
- Identification of Ultrafast Photophysical Pathways in Photoexcited Organic Heterojunctions
- Exciton dissociation mediated by phonons in organic photovoltaics
- Model for the dynamics of carrier injection in a band with polaronic states: Application to exciton dissociation in organic solar cells
- Exciton dissociation in organic solar cells: An embedded charge transfer state model