The application relates to an organic electroluminescent material and device, and relates to research and development of a heterocycle ring material that is applied in red, green and blue phosphor materials in OLED devices; the material is partially based on a pair of aromatic or fake aromatic rings that are mutually bonded and complexing with a transient metal; aza-boron heterocycle ring ethylene, borazine and related aromatic composition comprising boron can be combined to serve as thick loop closing, side group or bridging group so as to adjust colors and improve chemical stability; the needed composition can be selected via calculation and determination so as to provide proper triplet energy that suits a blue emitter and a chemical stability that can be applied in the device.