The saturation behavior in low voltage cathodoluminescence is originated from the low conductivity of the phosphor material. Based on the electrical percolation theory, carbon nano-tubes (CNTs) and graphenes (GPNs) were simultaneously introduced into the phosphor material to achieve a higher conductivity. Owing to the cooperating effects originated from the morphorlogical complementarities between CNTs and GPNs, the electrical percolation threshold of three-dimensional conductive network in the phosphor material was significantly decreased when the CNT/GPN mass ratio was properly set. With the introduction of CNT/GPN cooperating conductive component in the phosphor material, distinctly improved performances were achieved in low voltage cathodoluminescence. (C) 2017 Elsevier B.V. All rights reserved.