材料科学
热液循环
表征(材料科学)
钙钛矿(结构)
铋
化学工程
钛酸酯
钛酸铋
矿物学
复合材料
纳米技术
冶金
陶瓷
铁电性
光电子学
化学
电介质
工程类
作者
Husam Nahedh,Odai N. Salman,Mukhlis M. Ismail
标识
DOI:10.1149/2162-8777/ad3d08
摘要
Abstract The hydrothermal method successfully prepares a lead-free sodium bismuth titanate (NBT) perovskite film. The prepared films were studied structurally, and morphologically using X-ray diffraction, and field-emission scanning electron microscopy (FESEM), respectively. Varying the concentration of NaOH showed a noticeable effect on the properties studied. Good crystallization of NBT perovskite films without impurities was obtained at 18 and 20 M concentrations, where the crystalline size was 14 nm according to the Scherer equation. Also, when varying the concentration of NaOH, a similar film thickness was obtained through a cross-section of the FESEM images. It was observed that there was a difference in the intensity of the peaks of the photoluminescence spectra of the prepared films with a change in the concentration of NaOH, which confirms a change in the concentration of oxygen vacancies. The activation energy of the prepared films was deduced from the Arrhenius plot, as it showed small values in the films prepared with a low concentration of NaOH. The results showed that the maximum value of mobility of NBT films was at 20 M of NaOH concentration through the Hall Effect.
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