Organic light-emitting device having a fluoride and metal based intermediate layer and production method

1. An organic light-emitting device, comprising:

a substrate;

an anode disposed above the substrate;

a wiring disposed above the substrate, the wiring being spaced away from the anode in a direction parallel to a main surface of the substrate;

a light-emitting layer disposed above the anode and containing an organic light-emitting material;

an intermediate layer disposed on the light-emitting layer and above the wiring, the intermediate layer being continuous over the light-emitting layer and the wiring and containing a fluoride of a first metal, the first metal being an alkali metal or an alkaline earth metal;

an organic functional layer disposed on the intermediate layer, the organic functional layer being continuous over the light-emitting layer and the wiring and made of an organic material doped with a second metal, the organic material having at least one of an electron transporting property and an electron injection property, the second metal having a property of cleaving a bond between the first metal and fluorine in the fluoride of the first metal; and

a cathode disposed on the organic functional layer, the cathode being continuous over the light-emitting layer and the wiring, wherein

0.1≤x≤4, 3≤y≤50, and y≥20x, where

x denotes a film thickness [nm] of the intermediate layer and y denotes a dope concentration [wt %] of the second metal in the organic functional layer.

2. An organic light-emitting device, comprising:

a substrate;

an anode disposed above the substrate;

a wiring disposed above the substrate, the wiring being spaced away from the anode in a direction parallel to a main surface of the substrate;

a light-emitting layer disposed above the anode and containing an organic light-emitting material;

an intermediate layer disposed on the light-emitting layer and above the wiring, the intermediate layer being continuous over the light-emitting layer and the wiring and containing a fluoride of a first metal, the first metal being an alkali metal or an alkaline earth metal;

an organic functional layer disposed on the intermediate layer, the organic functional layer being continuous over the light-emitting layer and the wiring and made of an organic material doped with a second metal, the organic material having at least one of an electron transporting property and an electron injection property, the second metal having a property of cleaving a bond between the first metal and fluorine in the fluoride of the first metal; and

a cathode disposed on the organic functional layer, the cathode being continuous over the light-emitting layer and the wiring, wherein

1≤x≤2, 20≤y≤40, and y≥20x, where

x denotes a film thickness [nm] of the intermediate layer and y denotes a dope concentration [wt %] of the second metal in the organic functional layer.

3. A production method of an organic light-emitting device, comprising:

forming an anode and a wiring above a substrate, the wiring being spaced away from the anode in a direction parallel to a main surface of the substrate;

forming a light-emitting layer containing an organic light-emitting material above the anode;

forming an intermediate layer on the light-emitting layer and above the wiring, the intermediate layer being continuous over the light-emitting layer and the wiring and containing a fluoride of a first metal, the first metal being an alkali metal or an alkaline earth metal;

forming an organic functional layer on the intermediate layer, the organic functional layer being continuous over the light-emitting layer and the wiring and made of an organic material doped with a second metal, the organic material having at least one of an electron transporting property and an electron injection property, the second metal having a property of cleaving a bond between the first metal and fluorine in the fluoride of the first metal; and

forming a cathode on the organic functional layer, the cathode being continuous over the light-emitting layer and the wiring, wherein

0.1≤x≤4, 3≤y≤50, and y≥20x, where

x denotes a film thickness [nm] of the intermediate layer and y denotes a dope concentration [wt %] of the second metal in the organic functional layer.

4. A production method of an organic light-emitting device, comprising:

forming an anode and a wiring above a substrate, the wiring being spaced away from the anode in a direction parallel to a main surface of the substrate;

forming a light-emitting layer containing an organic light-emitting material above the anode;

forming an intermediate layer on the light-emitting layer and above the wiring, the intermediate layer being continuous over the light-emitting layer and the wiring and containing a fluoride of a first metal, the first metal being an alkali metal or an alkaline earth metal;

forming an organic functional layer on the intermediate layer, the organic functional layer being continuous over the light-emitting layer and the wiring and made of an organic material doped with a second metal, the organic material having at least one of an electron transporting property and an electron injection property, the second metal having a property of cleaving a bond between the first metal and fluorine in the fluoride of the first metal; and

forming a cathode on the organic functional layer, the cathode being continuous over the light-emitting layer and the wiring, wherein

1≤x≤2, 20≤y≤40, and y≥20x, where

x denotes a film thickness [nm] of the intermediate layer and y denotes a dope concentration [wt %] of the second metal in the organic functional layer.