Piezoluminescent devices by designing array structures

Luke Bao; Xiaojie Xu; Yong Zuo; Jing Zhang; Fei Liu; Yifan Yang; Fan Xu; Xuemei Sun; Huisheng Peng

doi:10.1016/j.scib.2019.01.001

Piezoluminescent devices by designing array structures

Sci Bull (Beijing). 2019 Feb 15;64(3):151-157. doi: 10.1016/j.scib.2019.01.001. Epub 2019 Jan 6.

Authors

Luke Bao¹, Xiaojie Xu¹, Yong Zuo¹, Jing Zhang¹, Fei Liu², Yifan Yang², Fan Xu², Xuemei Sun³, Huisheng Peng⁴

Affiliations

¹ State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, and Laboratory of Advanced Materials, Fudan University, Shanghai 200438, China.
² Institute of Mechanics and Computational Engineering, Department of Aeronautics and Astronautics, Fudan University, Shanghai 200433, China.
³ State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, and Laboratory of Advanced Materials, Fudan University, Shanghai 200438, China. Electronic address: sunxm@fudan.edu.cn.
⁴ State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, and Laboratory of Advanced Materials, Fudan University, Shanghai 200438, China. Electronic address: penghs@fudan.edu.cn.

PMID: 36659614
DOI: 10.1016/j.scib.2019.01.001

Abstract

Mechanoluminescence has attracted increasing attentions because it can convert the kinetic energy during human daily motions into light to be used in sensors and displays. However, its practical applications are still hindered by the weak brightness and limited color while under large forces. Herein, we developed novel piezoluminescent devices (PLDs) which could effectively emit visible light under low pressing forces through the stress-concentration and enhancing deformation on the basis of carefully-designed array structures. The emitting colors were also tunable by using bilayer luminescent film under different pressures. This work not only provides a new strategy to effectively harvest mechanical energy into light, but also presents a scalable, low-cost and color-tunable PLD which shows great potentials in various applications such as luminescent floors, shoes and stress-activated displays.

Keywords: Array structure; Color-tunable; Mechanoluminescence; Piezoluminescent device.