(K, Na)NbO3 ferroelectrics: a new class of solid-state photochromic materials with reversible luminescence switching behavior. Issue 35 (25th August 2017)

• Record Type: Journal Article
• Authors: Sun, Haiqin; Liu, Jian; Wang, Xusheng; Zhang, Qiwei; Hao, Xihong; An, Shengli
• Is Part Of: Journal of materials chemistry. Volume 5:Issue 35(2017)
• Page Start: 9080
• Page End: 9087
• Publication Date: 2017-08-25
• Subjects: Materials -- Periodicals; Chemistry, Analytic -- Periodicals; Optical materials -- Research -- Periodicals; Electronics -- Materials -- Research -- Periodicals; 543.0284
• DOI: 10.1039/c7tc03076b
• Languages: English
• ISSNs: 2050-7526

Abstract

Abstract : A kind of new photosensitive material, Sm doped K0.5 Na0.5 NbO3 (KNN) ceramics, exhibits excellent photochromism and reversible luminescence switching properties. Abstract : In this paper, we reported a new photosensitive material, Sm doped K0.5 Na0.5 NbO3 (KNN) ceramics, fabricated using a solid-sate reaction method, which exhibits both photochromism and luminescence switching properties. By alternating visible light irradiation ( λ > 407 nm) and thermal stimulus, the samples show a reversible color change from the initial green to pale gray. Interestingly, luminescence emission intensity can be effectively tuned using photochromic reactions. Furthermore, the luminescence switching degree strongly depends on the firing temperature. These results suggest that KNN-based perovskite oxides with photochromism, luminescence switching and ferroelectric energy storage properties are particularly attractive for optical data storage applications as multi-functional materials.