Organic electroluminescence device and polycyclic compound for organic electroluminescence device

An organic electroluminescence device, comprising:

• a first electrode;
• a second electrode disposed on the first electrode;
• and
• an emission layer disposed between the first electrode and the second electrode,
• wherein the first electrode and the second electrode each independently comprise at least one selected from the group consisting of Ag, Mg, Cu, Al, Pt, Pd, Au, Ni, Nd, Ir, Cr, Li, Ca, LiF/Ca, LiF/Al, Mo, Ti, In, Sn, Zn, an oxide thereof, a compound thereof, and a mixture thereof, and
• the emission layer comprises a polycyclic compound represented by Formula 1:
• wherein in Formula 1,
• a to f are each independently an integer from 0 to 4, and
• R1 to R6 are each independently a hydrogen atom, a deuterium atom, a halogen atom, a cyano group, a substituted or unsubstituted amino group, a substituted or unsubstituted silyl group, a substituted or unsubstituted alkyl group of 1 to 10 carbon atoms, a substituted or unsubstituted aryl group of 6 to 60 carbon atoms, or a substituted or unsubstituted heterocyclic group of 2 to 60 carbon atoms.