Fig. 2: Evaluation of excitation density-dependent optoelectronics properties of FACs perovskite thin films. | Nature Communications

Fig. 2: Evaluation of excitation density-dependent optoelectronics properties of FACs perovskite thin films.

From: Long-range charge carrier mobility in metal halide perovskite thin-films and single crystals via transient photo-conductivity

Fig. 2

a \({\sigma }_{{{{{{\rm{Photo}}}}}}\left(t=0\right)}\) calculated from the extrapolation as a function of excitation density (cm−3). b Charge carrier mobility (ϕ∑μ, sum-of-mobilities of electron and hole) determined by TPC and TRMC (for circle and diamond, respectively, lines are only to guide the eyes) as a function of excitation density (cm−3). For TPC, the \({\sigma }_{{{{{{\rm{Photo}}}}}}\left(t=0\right)}\) is used for Eq. 4, (\({\it{{\sigma }}}_{{{{{\mathrm{Photo}}}}}\left(t=0\right)}=e{I}_{{{{{\mathrm{Tot}}}}}}\phi {\noexpand\iSigma} \mu\)). The charge carrier mobilities (ϕ∑μ) from both measurements are in a good agreement for the entire range of excitation densities.

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