| abstract |
The invention discloses a thin film electroluminescence device, its preparation method and electronic equipment. The thin film electroluminescence device comprises a first electrode; a functional structure layer is arranged on the first electrode; a second electrode is arranged on the On the functional structure layer; and a covering layer, which is arranged on the side of the second electrode away from the first electrode, and has an ionic compound in the covering layer, and the chemical formula of the ionic compound is AX 2 , wherein A is selected from divalent Metal, X is selected from halogen. The thin film electroluminescent device and its preparation method and electronic equipment of the present invention effectively improve the luminous efficiency of the thin film electroluminescent device by providing a covering layer on the cathode, the covering layer has an ionic compound, and the ionic compound is a halide, especially For bromide or chloride, it can effectively reduce the difficulty of preparing thin film electroluminescent devices. |