Effect of Sn substitution on the energy storage properties of high (001)-oriented PbZrO3 thin films

Publication date: 30 June 2017
Source:Thin Solid Films, Volume 632
Author(s): Xin Guo, Jun Ge, Freddy Ponchel, Denis Rémiens, Ying Chen, Xianlin Dong, Genshui Wang
Highly (001)-oriented pure PbZrO3 (PZO) films and Sn-substituted PZO films are deposited on (001)-LaNiO3 buffered SiO2/Si substrates by RF magnetron sputtering. Different Sn-substituted PbZrO3 films (PbZr1-xSnxO3, x=0%, 3%, 5%, 10%) with orthorhombic anti-ferroelectric phase are fabricated. The effects of Sn substitution on structure and energy performance have been investigated in detail. The switching electric fields are enlarged and energy loss is lowered by Sn substitution. Recoverable energy density (Wr) of 14.8±0.2J/cm³ and energy efficiency (η) of 71.2±0.5% at 900kV/cm are obtained in 5% Sn-substituted PZO film (~360nm). Furthermore, with thicker thickness of ~650nm, Wr and η can be further improved. The Sn-substituted PZO film is believed to be an improved material for applications in energy storage systems and 5% Sn-substituted PZO film exhibits the highest Wr and η in this work.