Enhanced ferro-/piezoelectric properties of tape-casting-derived Er3+-doped Ba0.85Ca0.15Ti0.9Zr0.1O3 optoelectronic thick films

Jie Xu,Xinghua Zheng,Jinfeng Lin,Qiling Lu,Cong Lin,Xiao Wu,Tengfei Lin

doi:10.1007/s40145-020-0405-6

Abstract

Er3+-doped Ba0.85Ca0.15Ti0.9Zr0.1O3 (xEr-BCTZ, x = 0, 0.005, 0.01, 0.015) multifunctional thick films were prepared by the tape-casting method, using sol-gel-derived nano-sized powders as the matrix material. The surface morphologies, photoluminescence, and electrical properties were investigated. Dense microstructures with pure perovskite structure were obtained in the thick films. By doping an appropriate amount of Er3−, the samples exhibit superior up-conversion photoluminescence performance and simultaneously enhanced electrical performances. In addition, relatively higher texture fractions (with the largest value of 83.5%) were realized through introducing plate-like BaTiO3 templates to make the thick film grow by the [001]c orientation. And the ferro-/piezoelectric properties of the thick films were further improved, showing potential in the applications of micro-optoelectronic devices.

Highlights

Optoelectronic multifunctional materials combining with piezo-/ferroelectric and luminescent features have attracted considerable attention by virtue of their potential electrical–optical coupling applications, such as data storage, power generation optical telecommunication, and remote sensing [1,2,3,4,5]
Tape-casting-derived textured BCTZ thick films with superior electrical performance can be achieved via a templated grain growth (TGG) process [20,21,22]
Plate-like BT templates with suitable aspect ratio are considered as a good candidate for preparing textured BCTZ ceramic bulks with high texture fraction, exhibiting significant enhancement of piezoelectric properties [20]

Summary

Introduction

Optoelectronic multifunctional materials combining with piezo-/ferroelectric and luminescent features have attracted considerable attention by virtue of their potential electrical–optical coupling applications, such as data storage, power generation optical telecommunication, and remote sensing [1,2,3,4,5]. Tape-casting-derived textured BCTZ thick films with superior electrical performance can be achieved via a templated grain growth (TGG) process [20,21,22]. Plate-like BT templates with suitable aspect ratio are considered as a good candidate for preparing textured BCTZ ceramic bulks with high texture fraction (up to 98%), exhibiting significant enhancement of piezoelectric properties [20]. The plate-like BT templates can be adopted to fabricate BCTZ-based textured thick films. The Er3+-doped BCTZ-based ceramics own reversible photochromism behavior, optical temperature sensing performance, and vacancy-controlled tunable optoelectronic properties [26,27,28]. We obtained highly (100)-oriented Er3+-doped BCTZ multifunctional thick films with improved electrical performances through the TGG process, which can promote the miniaturization of optoelectronic components and corresponding devices

Experimental

Results and discussion

Conclusions