White light organic EL element and illuminating device comprising green red light emitting unit and blue light emitting unit

An organic electroluminescence (EL) element including a light emission surface and a back surface as both main surfaces,

• the organic EL element comprising:
• a light-pervious substrate;
• a light-pervious anode layer;
• a light-emitting functional layer;
• and a metal cathode layer in order from a side of the light emission surface,
• the light-emitting functional layer including:
• a green red light emitting unit;
• a unit connection mechanism;
• and a blue light emitting unit,
• the unit connection mechanism being configured to inject electrons to a side of the green red light emitting unit and holes to a side of the blue light emitting unit when energized,
• the green red light emitting unit comprising a green red mixed phosphorescent light-emitting layer that includes:
• a green phosphorescent material;
• a red phosphorescent material;
• and a host material for a phosphorescent light-emitting layer,
• the green red light emitting unit emitting green light and red light when energized,
• the blue light emitting unit including:
• a blue fluorescent light-emitting layer that emits blue light when energized;
• and
• a hole transporting layer (HTL) adjustment layer adjacent to the blue fluorescent light-emitting layer on a side of the unit connection mechanism,
• the HTL adjustment layer being a hole transporting layer having an average thickness of 50 nm or more,
• wherein the EL element is configured to emit white light from the light emission surface,
• the white light having:
• a correlated color temperature TCP of 2200 K to 3000 K;
• a distance duv of 0.02 or less, the distance duv referring to a distance from a black-body radiation curve to a coordinate position of the white light in a CIE1931 chromaticity coordinate system;
• a color rendering property Ra of 80 or more;
• and
• a Melanopic Ratio value of 0.65 or less,
• wherein the light-pervious anode layer is in direct contact with the green red light emitting unit so as to inject holes into the green red light emitting unit;
• and
• wherein the metal cathode layer is in direct contact with the blue light emitting unit so as to inject electrons into the blue light emitting unit.