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Non-Markovian dynamics in guanidinium-based perovskites
H Triviño1, F Mesa2, S Zapata3
1Facultad de Ingeniería y Ciencias Básicas, NanoTech Group, Fundación Universitaria Los Libertadores, Cra 16 No. 63a-68, Bogotá, 111221, Cundinamarca, Colombia.
Scientific Reports
|January 6, 2026
Summary
This study explores guanidinium perovskites for solar energy, revealing how surface electronic states improve polarization and charge carrier lifetimes. Non-Markovian dynamics are key to understanding their light absorption and performance.
Area of Science:
- Quantum physics
- Materials science
- Solid-state chemistry
Background:
- Open quantum systems require Markovian and non-Markovian measurements for characterization.
- Solar radiation harvesting technologies benefit from understanding light-matter interactions.
Purpose of the Study:
- Investigate non-Markovian dynamics in guanidinium perovskites with [Formula: see text] substitution.
- Examine UV-Vis light-matter interactions for solar energy applications.
Main Methods:
- Ab initio-inspired modeling.
- Open quantum system simulations.
- Non-Markovian analysis.
Main Results:
- Surface electronic states suppress Pb-I hybridization, enhancing dielectric response, polarization, and charge carrier lifetimes.
- Guanidinium cations promote low-energy vibrational modes and large polaron formation.
- Spectroscopic parameters critically tune Markovian and non-Markovian features with temperature.
Conclusions:
- Guanidinium perovskites show promise for solar radiation harvesting due to enhanced optical and electronic properties.
- Non-Markovian dynamics are crucial for optimizing perovskite performance in solar cells.
- Tuning spectroscopic parameters offers a method to control quantum dynamics in these materials.
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