Photochromic effect of transparent lead-free ferroelectric KSr2Nb5O15 ceramics

Shuyao Cao, Feng Gao, Jie Xu, Jihong Zhu, Qian Chen, Yiting Guo, Leilei Li, Junting Liu, Tong Gao, Emilia Pawlikowska, Mikołaj Szafran, Guanghua Cheng

Research output: Contribution to journalArticlepeer-review

39 Scopus citations

Abstract

Transparent KSr2Nb5O15 (KSN) lead-free ferroelectric ceramics have been synthesized via modified pressureless sintering method. A significant photochromic effect was observed for the transparent KSN ceramics prepared without rare-earth dopant modification. The piezoelectric properties depend on the grain orientations were investigated. The optical transmittance of the KSN ceramics is greater than 40% in the wavelength range of 530–800 nm. After NUV irradiation, the absorbance was enhanced by more than 40% in a broad visible range (more than 79%). The absorbance returned to the initial value after a thermal bleaching process. The results of the cycling tests and response experiments showed the stability and saturation of the photochromic effect. In addition, the possible photochromic mechanism of the KSN ceramics is discussed and the photochromic centers are identified. This transparent KSN ceramics exhibits an obvious photochromic effect and is a potential candidate materials for optical data storage and information recording applications.

Original languageEnglish
Pages (from-to)5260-5266
Number of pages7
JournalJournal of the European Ceramic Society
Volume39
Issue number16
DOIs
StatePublished - Dec 2019

Keywords

  • KSrNbO
  • Photochromic effect
  • Transparent ceramics

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