ORGANIC ELECTROLUMINESCENT ELEMENT, ORGANIC ELECTROLUMINESCENCE LIGHTING DEVICE, AND ORGANIC ELECTROLUMINESCENCE DISPLAYING DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a white light-emitting organic electroluminescent element with a low driving voltage and high efficiency.SOLUTION: An organic electroluminescent element has a positive electrode, a negative electrode, and a light emitting layer between the positive electrode and the negative electrode. At least the light emitting layer is formed by a wet deposition method, and the light emitting layer contains a charge transport material and a light emitting material. The charge transport material contains a hole transport material and an electron transport material having specific partial structures. The light emitting material has at least three or more kinds, includes at least two or more kinds of light emission maximum as light emitting spectra, and has a hole injection transport layer adjacent to the light emitting layer between the positive electrode and the light emitting layer.