Site‐Engineering for Controlling Multiple‐Excitation and Emission in Eu<sup>2+</sup>‐Activated CaSrSiO<sub>4</sub> Phosphors in Marine Fisheries
Shuifu Liu, Dawei Wen, Rongkai Du, Chunyan Jiang, Jun Chen, Junhao Li, Lei Zhou, Мaxim S. Моlokeev, Mingmei Wu
Abstract
Abstract Artificial light fishing technology has been used in marine fisheries for thousands of years. The light source with multi‐color adjustable output is expected to become a new generation of fish‐attracting lamps. Herein, a new method of crystal‐site engineering through reducing atmospheres is proposed for the development of Eu 2+ doped single‐phase phosphor with multi‐excitation and multi‐emission properties. Following this approach, the distribution ratio of Eu 2+ at Ca 2+ and Sr 2+ sites in CaSrSiO 4 (CSO) can be modulated. Importantly, Eu 2+ at both lattice sites exhibit non‐interfering optical properties, CSO:Eu 2+ phosphor realizes multi‐color output from green to yellow and then to red when Eu 2+ occupies the Sr 2+ and Ca 2+ sites in a relatively balanced ratio. Benefitting from the tunable color range covering the spectral sensitivity regions of most marine fishes, this phosphor may eventually be applied in futuristic innovative fish‐attracting lamps.