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Item type:Publication, Photo-induced electron transfer dynamics and its mid-IR modulation of an ethyne bridged donor-acceptor complex(Royal Society of Chemistry, 2025-10-02)Electron transfer (ET) rate in donor–bridge–acceptor (DBA) complexes is modulated by the alkyne bridge vibrational excitation. Torsion angle ( θ ) offers selectivity in accessing locally-excited, acceptor-centered (S 2 ) state of the DBA complex.1 - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Determining exciton binding energy and reduced effective mass in metal tri-halide perovskites from optical and impedance spectroscopy measurements(American Physical Society, 2025-10-10)This work presents a new method to accurately determine exciton binding energy and reduced effective mass in bulk halide perovskites by accounting for polarization effects from carrier-phonon interactions. The exciton-polaron binding energy is estimated using optical absorption measurements and the Elliott-based Band Fluctuations (EBF) model. The reduced effective mass is then derived by combining the results from the EBF model with the Pollmann-Buettner exciton-polaron theory, which incorporates electron-phonon coupling by leaving in consideration the ionic and electronic dielectric responses, as well as the LO phonon energy. When applied to $A\phantom{\rule{0}{0ex}}B\phantom{\rule{0}{0ex}}{X}_{3}$ perovskites ($A$ = MA, FA, Cs; $B$ = Pb; $X$ = I, Br, Cl), this approach shows excellent agreement with magnetoabsorption and other optical-resolved methods, confirming its accuracy and broad applicability which could be extended to other polar systems.4