Exciton binding energy and effective mass of CsPbCl 3 : a magneto-optical study
Résumé
High magnetic field spectroscopy has been performed on lead chloride-based perovskite, a material which attracts significant interest for photovoltaic and photonic applications within past decades. Optical properties being mainly driven by the exciton states, we have measured the fundamental parameters, such as the exciton binding energy, effective mass and dielectric constant. Among the inorganic halide perovskites, CsPbCl 3 owns the largest exciton binding energy and effective mass. This blue emitting compound has also been compared with lower band gap energy perovskites and other semiconducting phases, showing comparable band gap dependences for binding energy and Bohr radius.
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