Fig. 2: Electrical transport behaviors of entropy-engineered thin films and the possible structural origins of decoupled carrier transport explained by spectral methods.
From: Carrier-phonon decoupling in perovskite thermoelectrics via entropy engineering
a–c Temperature-dependent electrical conductivity (σ) (a), Hall mobility (μH) (b), and weighted mobility (μW) (c) of entropy-engineered thin films. The acoustic phonon scattering dominated T−1.5 trend curves were plotted (dashed gray line). d The XPS Ti 2p spectra of entropy-engineered thin films. The dashed gray line marks the peak position and serves as a guide for the eyes. e The PDF results of corresponding bulks to get referencing bond length and the fitting curves by reverse Monte Carlo methods. f The Raman spectra of LSAT substrates and entropy-engineered thin films on LSAT substrates. The typical vibration modes of perovskite thin films were highlighted by dashed lines, and the inset is the schematic of LO4 vibration mode. g SHG mapping of SBLTO, SBCLTO, and SBCPLTO in 10 μm × 10 μm.
