TY  - JOUR
ID  - SisLab4131
UR  - https://eprints.uet.vnu.edu.vn/eprints/id/eprint/4131/2/S2468217919300528
IS  - 3
A1  - Nguyen, Dang Co
A1  - Bui, Dinh Tu
A1  - Le, Viet Cuong
A1  - Pham, Duc Thang
Y1  - 2019/09//
N2  - Lead-free Bi0.5(Na0.80K0.20)0.5TiO3 (BNKT) ferroelectric films were synthesized on Pt/Ti/SiO2/Si substrates via the chemical solution deposition. The influence of the crystallization temperature on the microstructures, the ferroelectric and energy-storage properties of the films was investigated in detail. The results showed that the BNKT films have reached the well crystallized state in the single-phase perovskite structure at 700 °C. Ferroelectric and energy-storage properties of the films were significantly enhanced by increasing the crystallization temperature. The remnant polarization (2Pr) and maximum polarization (2Pm) reached the highest values of 18.4 ?C/cm2 and 61.2 ?C/cm2, respectively, under an applied electric field of 300 kV/cm. Thanks to the strong enhancement in 2Pm and the large Pmax - Pr value, the highest energy-storage density (Jreco) and efficiency of 2.3 J/cm3 and 58.2%, respectively, were obtained. These results indicate that the BNKT films have application potentials in advanced capacitors.
PB  - Elsevier B.V
JF  - Journal of Science: Advanced Materials and Devices
VL  - 4
SN  - 2468-2179
TI  - Effect of crystallization temperature on energy-storage density and efficiency of lead-free Bi0.5(Na0.8K0.2)0.5TiO3 thin films prepared by sol?gel method
SP  - 370
AV  - public
EP  - 375
ER  -