A novel photochromic ceramics with reversible luminescence modulation and light bleaching behavior: Sm3+-doped KSr2Nb5O15

被引：45

作者：

Cao, Shuyao ^{[1
]}

Chen, Qian ^{[1
]}

Liu, Junting ^{[1
]}

Wu, Changying ^{[2
]}

Li, Leilei ^{[1
]}

Xu, Jie ^{[1
,3
]}

Cheng, Guanghua ^{[2
,4
]}

Gao, Feng ^{[1
]}

机构：

[1] Northwestern Polytech Univ, NPU QMUL Joint Res Inst Adv Mat & Struct, MIIT Key Lab Radiat Detect Mat & Devices, State Key Lab Solidificat Proc,Sch Mat Sci & Engn, Xian 710072, Peoples R China

[2] Northwestern Polytech Univ, Sch Elect & Informat, Xian 710072, Shaanxi, Peoples R China

[3] Northwestern Polytech Univ Shenzhen, Res & Dev Inst, Shenzhen 518057, Peoples R China

[4] Chinese Acad Sci, Xian Inst Opt & Precis Mech, State Key Lab Transient Opt & Photon, Xian 710119, Shaanxi, Peoples R China

来源：

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2020年 / 40卷 / 15期

基金：

中国国家自然科学基金;

关键词：

Photochromism; Luminescence modulation; Light bleaching; Tetragonal tungsten bronze structure; Sintering atmosphere; PHOTOLUMINESCENCE; EMISSION; CONTRAST; ENERGY;

D O I：

10.1016/j.jeurceramsoc.2020.07.030

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

A novel tetragonal tungsten bronze (TTB) type Sm3+-doped KSr2Nb5O15 (KSN-Sm) optical ceramic is fabricated by atmosphere sintering technology. A reversible photochromic effect between faint yellow and olive colors and accompanied luminescence modulation behaviour can be realized by alternating the 395 nm light irradiation and thermal treatment. The thermal stimulus model is introduced to modify the classical resonance energy transfer mechanism. The results show that the optimal luminescence modulation ratio Delta R-t about the red emission (601 nm) intensity amounted to 60.0 %, and the KSN-Sm ceramic exhibits excellent luminescence modulation rate and reproducibility. The colored KSN-Sm ceramic can be partly bleached by external light stimulus (620 nm), and the luminescence emission intensity can be recovered from 45 % to 84.2 %. The light bleaching efficiency is strongly dependent on the irradiation wavelength, exposure duration and irradiation dose. These discoveries pave the way to develop new luminescence materials with TTB structure.

引用

页码：6061 / 6072

页数：12

共 42 条

[1] Activity in methane combustion and sensitivity to sulfur poisoning of La1-xCexMn1-yCoyO3 perovskite oxides [J].