# A quantum open system model of molecular battery charged by excitons

## TL;DR

This paper presents a quantum Markovian model for a molecular battery charged by excitons, providing insights into energy transfer efficiency and stability in biological and organic systems.

## Contribution

It introduces an analytically solvable quantum open system model for molecular batteries charged by non-equilibrium excitons, grounded in quantum Markovian dynamics.

## Key findings

- Relations between energy transfer efficiency and stability analyzed
- Model applicable to biological and organic energy systems
- Provides a mathematically rigorous framework for open quantum systems

## Abstract

The analytically tractable model employing Quantum Markovian Master Equations, derived by weak coupling procedure and satisfying complete positivity, is proposed to describe a model of molecular battery charged by a non-equilibrium excitonic reservoir. The excitons are produced by non-equilibrium processes involving, e.g. light absorption and chemical reactions. Various relations concerning the efficiency of the involved processes of energy transfer and the stability of battery are discussed. The model can be treated as an initial step in applications of mathematically sound version of Quantum Theory of Open Systems to complex processes of energy transfer in biological system and man-made devices based on organic materials.