Multi-Element Topochemical-Molten Salt Synthesis of One-Dimensional Piezoelectric Perovskite

Overview

Journal iScience

Publisher Cell Press

Date 2019 Jun 28

PMID 31247446

Authors

Lihong Li

Zhongyuan Xiang

Meng Gao

Cheng Bian

Meng Su

Fengyu Li

Xianran Xing

Yanlin Song

Affiliations

Soon will be listed here.

Abstract

One-dimensional perovskites are an interesting material for energy and optoelectronic applications. However, exploring the full wealth of architectures these materials could allow, through multi-element doping of A-sites and B-sites, is still a challenge. Here, we report a high-yield synthetic strategy for 1D perovskites via a two-step method based on a multi-element topochemical-molten salt method. Typically, a high yield of 1D multicomponent perovskite niobates (LiNaK)(NbSb)O (LNKNS2) is rapidly achieved from as-synthesized 1D K(NbSb)O with multi-element B-sites. In this process, 1D K(NbSb)O has been first achieved, and the proportion of the ions in A-sites is affected by the radius and molar ratio of ions. The z axis direction of K(NbSb)O rod is transformed into the x axis direction of LNKNS2 rod. Furthermore, the output voltage of the 1D niobates-based flexible piezoelectric device (FPD) was nearly 600% compared with that of the isotropic niobates-based FPD. This work also allows convenient fabrication of other 1D multicomponent perovskites.

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