Organic light emitting diode including an organic layer having a compound with at least a nitrogen-containing heteroring group

1. An organic light emitting diode comprising:

an anode;

a cathode;

a light emitting layer provided between the anode and the cathode; and

an organic material layer provided between the cathode and the light emitting layer,

wherein the light emitting layer includes a fluorescent dopant; and

the organic material layer provided between the cathode and the light emitting layer includes a compound satisfying the following Equation 1,

wherein the organic material layer is an electron transfer layer, an electron injection layer or a layer carrying out electron transfer and electron injection at the same time:

0 eV<λ − −λ + <0.3 eV  [Equation 1]

wherein, in Equation 1,

λ− means a reorientation energy value of an anion radical;

λ+ means a reorientation energy value of a cation radical, and

wherein the compound satisfying Equation 1 is represented by the following Chemical Formula 1:

Het-L-D1  [Chemical Formula 1]

wherein, in Chemical Formula 1,

Het is any one of the following structures:

wherein Het is unsubstituted or substituted with one, two or more substituents selected from the group consisting of deuterium, a cyano group, a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group, and a substituted or unsubstituted heteroring group,

L is a direct bond, a substituted or unsubstituted phenylene group, a substituted or unsubstituted biphenylene group, a substituted or unsubstituted terphenylene group, or a substituted or unsubstituted naphthylene group,

D1 is any one of the following structures:

wherein D1 is unsubstituted or substituted with one, two or more substituents selected from the group consisting of deuterium, a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group, and a substituted or unsubstituted heteroring group,

with the proviso that when Het is

 D1 is not one of

2. The organic light emitting diode of claim 1 , wherein an ionization potential value of the compound satisfying Equation 1 is greater than or equal to 5.5 eV and less than 6.5 eV.

3. The organic light emitting diode of claim 1 , which satisfies the following Equation 2:

|Δ IP |<0.5 eV  [Equation 2]

wherein, in Equation 2,

ΔIP means a difference between an ionization potential value of the compound satisfying Equation 1 and an ionization potential value of a host material of the light emitting layer.

4. The organic light emitting diode of claim 1 , wherein electron mobility of the compound satisfying Equation 1 is 10 −7 cm 2 /Vs or greater under an electric field condition of 0.1 MV/cm.

5. The organic light emitting diode of claim 1 , wherein hole mobility of the compound satisfying Equation 1 is 10 −7 cm 2 /Vs or greater under an electric field condition of 0.1 MV/cm.

6. The organic light emitting diode of claim 1 , which emits blue fluorescent light.

7. The organic light emitting diode of claim 1 , wherein the light emitting layer includes a peak wavelength of an optical emission spectrum of 550 nm or less.

8. The organic light emitting diode of claim 1 , wherein the organic material layer including the compound satisfying Equation 1 is provided adjoining the light emitting layer.

9. An organic light emitting diode comprising:

an anode;

a cathode;

a light emitting layer provided between the anode and the cathode; and

an organic material layer provided between the cathode and the light emitting layer,

wherein the light emitting layer includes a fluorescent dopant; and

the organic material layer provided between the cathode and the light emitting layer includes a compound satisfying the following Equation 1,

wherein the organic material layer is an electron transfer layer, an electron injection layer or a layer carrying out electron transfer and electron injection at the same time:

0 eV<λ − −λ + <0.3 eV  [Equation 1]

wherein, in Equation 1,

λ− means a reorientation energy value of an anion radical;

λ+ means a reorientation energy value of a cation radical, and

wherein the compound satisfying Equation 1 is represented by any one of the following Compound 1 to 39, 43 to 48, 50 to 55, 62, 64 to 67, 69, 77, 79 to 92 and 94 to 97:

10. The organic light emitting diode of claim 1 further comprising one, two or more layers selected from the group consisting of a hole injection layer, a hole transfer layer, an electron transfer layer, an electron injection layer, an electron blocking layer and a hole blocking layer.