Eco-friendly, solution-processable and efficient low-energy lighting phosphors: copper halide based hybrid semiconductors Cu4X6(L)2 (X = Br, I) composed of covalent, ionic and coordinate bonds

摘要: A series of copper halide based inorganic–organic hybrid semiconductors have been synthesized. Structural analysis confirms that all compounds are composed one-dimensional Cu4X62− anionic chains coordinate to cationic ligands via Cu–N dative bonds. Different coordination affinities the lead two types ligand arrangements with various structural distortions. All highly resistant heat and moisture as a result combination ionic Low energy emission high efficiency is achieved for these (∼552–615 nm) color (yellow-orange) can be tuned by varying halogen element. The electronic structure luminescence mechanism examined both experimental theoretical methods. More importantly, demonstrate good solubility in polar aprotic solvents, desired property absent other CuX families extended structures, which attributed primarily nature this material class. solution-processability, cost effective easily scalable synthesis coupled quantum efficiencies framework stability make materials promising phosphors general lighting applications.