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Updated: Apr 18, 2026

Recombination Dynamics in Thin-film Photovoltaic Materials via Time-resolved Microwave Conductivity
Published on: March 6, 2017
Out-of-equilibrium dynamics of photoexcited spin-state concentration waves
A Marino1, M Buron-Le Cointe, M Lorenc
1Institut de physique de Rennes, UMR 6251 Université Rennes 1-CNRS, 35042 Rennes, FRANCE. marylise.buron@univ-rennes1.fr eric.collet@univ-rennes1.fr.
Abstract:
The spin crossover compound [FeIIH2L2-Me][PF6]2 presents a two-step phase transition. In the intermediate phase, a spin state concentration wave (SSCW) appears resulting from a symmetry breaking (cell doubling) associated with a long-range order of alternating high and low spin molecular states. By combining time-resolved optical and X-ray diffraction measurements on a single crystal, we study how such a system responds to femtosecond laser excitation and we follow in real time the erasing and rewriting of the SSCW.
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