Revealing the effect of the Schottky barrier on the energy storage performance of ferroelectric multilayers

Achieving high overall energy storage performance of KNN-based transparent ceramics by ingenious multiscale designing

“…For (1 − x )KNN– x BCZT ceramics with smaller x , more electrons, which serve as the majority carriers, exist in the matrix and make them show n-type behavior. Additionally, based on the author's previous work and some other literature, the work function of the Pt electrode ( Φ E ) is 5.56 eV, and the work function of KNN and BCZT is ∼4.06 eV and ∼4.8 eV (close to that of BaTiO 3 ), respectively, 64–66 resulting in the work function of (1 − x )KNN– x BCZT ceramics ( Φ C ) being between them. In this case, the ideal band diagram near the Pt/(1 − x )KNN– x BCZT interface under applied bias can be depicted in Fig.…”