Site‐Engineering for Controlling Multiple‐Excitation and Emission in Eu2+‐Activated CaSrSiO4 Phosphors in Marine Fisheries

Abstract

AbstractArtificial 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 Eu2+ doped single‐phase phosphor with multi‐excitation and multi‐emission properties. Following this approach, the distribution ratio of Eu2+ at Ca2+ and Sr2+ sites in CaSrSiO4 (CSO) can be modulated. Importantly, Eu2+ at both lattice sites exhibit non‐interfering optical properties, CSO:Eu2+ phosphor realizes multi‐color output from green to yellow and then to red when Eu2+ occupies the Sr2+ and Ca2+ 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.