Red phoshorescent compound and organic electroluminescent device using the same

A red phosphorescent compound, comprising:

• a host material being capable of transporting an electron or a hole;
• and
• a dopant material represented by following Formula 1:
• and R1 is one of C1 to C6 substituted or non-substituted alkyl group and C1 to C6 substituted or non-substituted alkoxy group, each of R2 to R6 is one of hydrogen atom (H), C1 to C6 substituted or non-substituted alkyl group, C1 to C6 substituted or non-substituted alkoxy group, halogen atom, trimethylsily group and tert-trifluoromethyl, and at least one of the R2 to R6 is one of C1 to C6 substituted or non-substituted alkyl group, C1 to C6 substituted or non-substituted alkoxy group, halogen atom, trimethylsily group and tert-trifluoromethyl.

An organic electroluminescent device, comprising:

• a first substrate;
• a thin film transistor on the first substrate;
• a second substrate facing the first substrate;
• and
• an organic luminescent diode electrically connected to the thin film transistor and including a first electrode, a second electrode facing the first electrode and an organic emission layer disposed between the first and second electrodes, a red phosphorescent compound of the organic emission layer including:
• a host material being capable of transporting an electron or a hole;
• and
• a dopant material represented by following Formula 1:
• and each of R1 to R4 is one of the group consisting of hydrogen atom (H), C1 to C6 substituted or non-substituted alkyl group, C1 to C6 substituted or non-substituted alkoxy group, and halogen atom.

An organic electroluminescent device, comprising:

• a first substrate;
• a thin film transistor on the first substrate;
• a second substrate facing the first substrate;
• and
• an organic luminescent diode electrically connected to the thin film transistor and including a first electrode, a second electrode facing the first electrode and an organic emission layer disposed between the first and second electrodes, a red phosphorescent compound of the organic emission layer including:
• a host material being capable of transporting an electron or a hole;
• and
• a dopant material represented by following Formula 1:
• and R1 is one of C1 to C6 substituted or non-substituted alkyl group and C1 to C6 substituted or non-substituted alkoxy group, each of R2 to R6 is one of hydrogen atom (H), C1 to C6 substituted or non-substituted alkyl group, C1 to C6 substituted or non-substituted alkoxy group, halogen atom, trimethylsily group and tert-trifluoromethyl, and at least one of the R2 to R6 is one of C1 to C6 substituted or non-substituted alkyl group, C1 to C6 substituted or non-substituted alkoxy group, halogen atom, trimethylsily group and tert-trifluoromethyl.