| Title |
Energijos ir krūvio pernašos teorija organinėse molekulinėse sistemose / |
| Translation of Title |
Theory of energy and charge transport in organic molecular systems. |
| Authors |
Abramavičius, Vytautas |
| Full Text |
|
| Pages |
29 |
| Keywords [eng] |
stochastic Schrödinger equation ; energy and charge transport ; theoretical physics |
| Abstract [eng] |
In this thesis we investigate energy and charge transport in organic molecular systems. The main focus of this work is development and application of the stochastic model of the dynamics of open quantum systems. First of all, we derive the stochastic Schrödinger equation describing the evolution of a bosonic system linearly interacting with its environment. We demonstrate the performance of this equation on a small model system. Further we apply the stochastic Schrödinger equation to model the energy excitation transfer dynamics in the photosynthetic Fenna-Matthews-Olson (FMO) complex. The obtained results allow us to estimate the energy transfer pathways in this aggregate and their dependence on environmental factors. The stochastic Schrödinger equation is also used to model charge separation dynamics in organic Solar cells. Comparing theoretical results with experimental data we determine that in the femtosecond – picosecond timescale the motion of electron can be divided into three stages: coherent, transient and incoherent. We also analyze the influence of morphology of active layer in organic Solar cells on the process of charge separation. |
| Dissertation Institution |
Vilniaus universitetas. |
| Type |
Summaries of doctoral thesis |
| Language |
Lithuanian |
| Publication date |
2017 |
