Fig. 3: Pump fluence-dependent THz photoconductivity spectra for MAPbI3 polycrystalline grains. | Light: Science & Applications

Fig. 3: Pump fluence-dependent THz photoconductivity spectra for MAPbI3 polycrystalline grains.

From: Photoinduced large polaron transport and dynamics in organic–inorganic hybrid lead halide perovskite with terahertz probes

Fig. 3

Extracted a real and b imaginary parts of THz photoconductivity spectra of MAPbI3 polycrystalline grains, following photoexcitation at 1.55 eV with pump fluences of 57, 113, 170, and 283 μJ cm−2 at 300 K. The solid lines are the DSL model fits. Pump fluence evolutions of c oscillator strength gm, d resonant frequency \(\omega _{{{\mathrm{m}}}}/2\pi\), and e FWHM linewidth γm of the resonance modes

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