 The MN2 plus doped CS3-CU2-X5, X equal CL, BR, I, perovskite-like derivative powder material was successfully fabricated by a one-step solid-state reaction. This material exhibits strong STE emission peaks at 460 nm and 550 nm, respectively. Furthermore, the incorporation of MN2 plus into the lattice of CS3-CU2-X5 enables the energy transfer from the STEs to the MN2 plus, resulting in a broadened emission spectrum, 400 to 620 nm. In addition, the blue emission peak at 460 nm is significantly reduced due to the energy transfer from the STEs to the MN2 plus. As a result, a white light emitting diode, WLED, with a CRI value of 94.5% and a high luminance of 1,000 candelas per square meter can be achieved. This article was authored by Yao Yulu, C.C. Jing, Zeng Shui-G, and others. We are article.tv, links in the description below.