光致发光
荧光粉
材料科学
光电子学
发光
兴奋剂
弯曲
红外线的
光学
复合材料
物理
作者
Zheyi Dong,Jiaying Shen,Fan Zhang,Yaping Qi,Yang Zhang,Gongxun Bai,Zhenping Wu,D. Li
摘要
Near-infrared luminescence phosphors are key material basis to potential applications for light sources and optoelectronic devices. In particular, it is vital to tune the luminescent properties of these phosphors in a flexible and controllable manner. Here, we demonstrate that a flexural strain originated from bending can be used to modulate the photoluminescence of freestanding Ni2+ doped SrTiO3 membranes. The bent membranes show remarkable red-shift emissions, arising from the variations of the symmetry of host materials and the local crystal fields around the Ni2+ ions. In addition, the phosphor films show a reversible and stable wavelength modulation with remarkable anti-fatigue characteristics after 104 bending cycles. These results provide a potential routine to develop flexible strain-tunable devices for applications in optical amplifiers and other optoelectronics.
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