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Electron-phonon couplings inherent in polarons drive exciton dynamics in two-dimensional metal-halide perovskites
Félix Thouin, Ajay Ram Srimath Kandada, David A. Valverde-Chávez +6
We report on the exciton formation and relaxation dynamics following photocarrier injection in a single-layer two-dimensional lead-iodide perovskite. We probe the time evolution of…
Enhanced screening and spectral diversity in many-body elastic scattering of excitons in two-dimensional hybrid metal-halide perovskites
Félix Thouin, Daniele Cortecchia, Annamaria Petrozza +2
In two-dimensional hybrid organic-inorganic metal-halide perovskites, the intrinsic optical lineshape reflects multiple excitons with distinct binding energies, each dressed differ…
Lattice vibrations and dynamic disorder in two-dimensional hybrid lead-halide perovskites
Vlad Alexandru Dragomir, Stefanie Neutzner, Claudio Quarti +7
By means of non-resonant Raman spectroscopy and density functional theory calculations, we measure and assign the vibrational spectrum of two distinct two-dimensional lead-iodide p…
Phonon coherences reveal the polaronic character of excitons in two-dimensional lead-halide perovskites
Félix Thouin, David A. Valverde Chávez, Claudio Quarti +6
Hybrid organic-inorganic semiconductors feature complex lattice dynamics due to the ionic character of the crystal and the softness arising from non-covalent bonds between molecula…
Exciton-polaron spectral structures in two dimensional hybrid lead-halide perovskites
Stefanie Neutzner, Félix Thouin, Daniele Cortecchia +3
Owing to both electronic and dielectric confinement effects, two-dimensional organic-inorganic hybrid perovskites sustain strongly bound excitons at room temperature. Here, we demo…